/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:05:51,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:05:51,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:05:51,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:05:51,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:05:51,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:05:51,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:05:51,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:05:51,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:05:51,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:05:51,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:05:51,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:05:51,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:05:51,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:05:51,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:05:51,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:05:51,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:05:51,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:05:51,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:05:51,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:05:51,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:05:51,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:05:51,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:05:51,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:05:51,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:05:51,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:05:51,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:05:51,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:05:51,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:05:51,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:05:51,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:05:51,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:05:51,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:05:51,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:05:51,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:05:51,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:05:51,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:05:51,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:05:51,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:05:51,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:05:51,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:05:51,544 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:05:51,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:05:51,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:05:51,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:05:51,559 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:05:51,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:05:51,559 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:05:51,559 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:05:51,559 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:05:51,560 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:05:51,560 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:05:51,560 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:05:51,560 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:05:51,560 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:05:51,560 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:05:51,561 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:51,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:05:51,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:05:51,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:05:51,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:05:51,561 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:05:51,562 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:05:51,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:05:51,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:05:51,562 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:05:51,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:05:51,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:05:51,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:05:51,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:05:51,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:05:51,730 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:05:51,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:05:51,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:05:51,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:05:51,749 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:05:51,749 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:05:51,814 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_WSQh9q/tmp/299092cf76894ffbb2c70e22d29170e7/FLAG104fd1313 [2020-07-01 11:05:52,167 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:05:52,168 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:05:52,174 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_WSQh9q/tmp/299092cf76894ffbb2c70e22d29170e7/FLAG104fd1313 [2020-07-01 11:05:52,577 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_WSQh9q/tmp/299092cf76894ffbb2c70e22d29170e7 [2020-07-01 11:05:52,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:05:52,590 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:05:52,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:05:52,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:05:52,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:05:52,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661c98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52, skipping insertion in model container [2020-07-01 11:05:52,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:05:52,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:05:52,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:05:52,844 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:05:52,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:05:52,875 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:05:52,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52 WrapperNode [2020-07-01 11:05:52,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:05:52,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:05:52,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:05:52,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:05:52,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:05:52,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:05:52,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:05:52,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:05:52,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... [2020-07-01 11:05:52,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:05:52,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:05:52,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:05:52,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:05:52,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:05:53,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:05:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:05:53,148 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:05:53,149 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:05:53,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:05:53 BoogieIcfgContainer [2020-07-01 11:05:53,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:05:53,153 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:05:53,153 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:05:53,155 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:05:53,156 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:05:53" (1/1) ... [2020-07-01 11:05:53,169 INFO L313 BlockEncoder]: Initial Icfg 7 locations, 10 edges [2020-07-01 11:05:53,170 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:05:53,171 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:05:53,171 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:05:53,172 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:05:53,174 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:05:53,174 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:05:53,175 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:05:53,189 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:05:53,205 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 11:05:53,209 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:05:53,211 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:05:53,219 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:05:53,221 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:05:53,222 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:05:53,222 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:05:53,223 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:05:53,223 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:05:53,223 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 7 edges [2020-07-01 11:05:53,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:05:53 BasicIcfg [2020-07-01 11:05:53,224 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:05:53,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:05:53,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:05:53,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:05:53,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:05:52" (1/4) ... [2020-07-01 11:05:53,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba3074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:05:53, skipping insertion in model container [2020-07-01 11:05:53,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (2/4) ... [2020-07-01 11:05:53,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba3074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:05:53, skipping insertion in model container [2020-07-01 11:05:53,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:05:53" (3/4) ... [2020-07-01 11:05:53,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba3074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:05:53, skipping insertion in model container [2020-07-01 11:05:53,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:05:53" (4/4) ... [2020-07-01 11:05:53,232 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:05:53,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:05:53,250 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:05:53,264 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:05:53,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:05:53,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:05:53,287 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:05:53,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:05:53,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:05:53,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:05:53,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:05:53,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:05:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 11:05:53,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:05:53,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 11:05:53,362 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:05:53,362 INFO L271 CegarLoopResult]: At program point L22-1(lines 19 24) the Hoare annotation is: true [2020-07-01 11:05:53,362 INFO L268 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-07-01 11:05:53,362 INFO L268 CegarLoopResult]: For program point L20-2(lines 19 24) no Hoare annotation was computed. [2020-07-01 11:05:53,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:05:53 BasicIcfg [2020-07-01 11:05:53,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:05:53,372 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:05:53,372 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:05:53,375 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:05:53,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:05:53,376 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:05:52" (1/5) ... [2020-07-01 11:05:53,377 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ce623d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:05:53, skipping insertion in model container [2020-07-01 11:05:53,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:05:53,377 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:05:52" (2/5) ... [2020-07-01 11:05:53,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ce623d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:05:53, skipping insertion in model container [2020-07-01 11:05:53,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:05:53,378 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:05:53" (3/5) ... [2020-07-01 11:05:53,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ce623d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:05:53, skipping insertion in model container [2020-07-01 11:05:53,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:05:53,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:05:53" (4/5) ... [2020-07-01 11:05:53,379 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ce623d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:05:53, skipping insertion in model container [2020-07-01 11:05:53,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:05:53,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:05:53" (5/5) ... [2020-07-01 11:05:53,380 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:05:53,408 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:05:53,408 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:05:53,408 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:05:53,408 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:05:53,408 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:05:53,408 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:05:53,409 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:05:53,409 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:05:53,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 11:05:53,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:05:53,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:05:53,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:05:53,437 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:05:53,437 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:05:53,438 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:05:53,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 11:05:53,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:05:53,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:05:53,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:05:53,439 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:05:53,439 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:05:53,444 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 3#L22-1true [2020-07-01 11:05:53,445 INFO L796 eck$LassoCheckResult]: Loop: 3#L22-1true [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 6#L20true [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 5#L20-2true [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 3#L22-1true [2020-07-01 11:05:53,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:53,451 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 1 times [2020-07-01 11:05:53,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:53,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493241639] [2020-07-01 11:05:53,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:53,527 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:53,529 INFO L82 PathProgramCache]: Analyzing trace with hash 59771, now seen corresponding path program 1 times [2020-07-01 11:05:53,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:53,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249048741] [2020-07-01 11:05:53,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:53,557 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:53,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1877022, now seen corresponding path program 1 times [2020-07-01 11:05:53,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:53,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267754204] [2020-07-01 11:05:53,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:53,578 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:53,679 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:05:53,679 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:05:53,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:05:53,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:05:53,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:05:53,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:53,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:05:53,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:05:53,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:05:53,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:05:53,681 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:05:53,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:53,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:53,799 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:05:53,800 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:53,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:05:53,807 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:53,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:05:53,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:05:53,892 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:05:53,895 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:05:53,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:05:53,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:05:53,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:05:53,895 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:05:53,895 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:53,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:05:53,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:05:53,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:05:53,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:05:53,896 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:05:53,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:53,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:53,973 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:05:53,979 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:53,984 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:05:53,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:05:53,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:05:53,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:05:53,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:05:53,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:05:53,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:05:53,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:05:53,994 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:54,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:05:54,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:05:54,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:05:54,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:05:54,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:05:54,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:05:54,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:05:54,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:05:54,038 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:05:54,048 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:05:54,048 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:54,055 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:05:54,055 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:05:54,056 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:05:54,057 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:05:54,092 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:05:54,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:54,129 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:05:54,131 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:05:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:54,146 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:05:54,146 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:05:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:05:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:54,233 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:05:54,234 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:05:54,239 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 11:05:54,240 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-07-01 11:05:54,367 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 13 states and 26 transitions. Complement of second has 10 states. [2020-07-01 11:05:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 11:05:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:05:54,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-07-01 11:05:54,372 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 11:05:54,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:05:54,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:05:54,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:05:54,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 11:05:54,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:05:54,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 26 transitions. [2020-07-01 11:05:54,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:05:54,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 10 states and 18 transitions. [2020-07-01 11:05:54,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 11:05:54,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:05:54,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 18 transitions. [2020-07-01 11:05:54,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:05:54,390 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 11:05:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 18 transitions. [2020-07-01 11:05:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 11:05:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 11:05:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2020-07-01 11:05:54,421 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 11:05:54,421 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 11:05:54,421 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:05:54,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 18 transitions. [2020-07-01 11:05:54,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:05:54,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:05:54,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:05:54,423 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:05:54,423 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:05:54,424 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 73#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 71#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 74#L20-2 [44] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 67#L22-1 [2020-07-01 11:05:54,424 INFO L796 eck$LassoCheckResult]: Loop: 67#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 68#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 76#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 67#L22-1 [2020-07-01 11:05:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:54,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1877125, now seen corresponding path program 1 times [2020-07-01 11:05:54,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:54,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743492309] [2020-07-01 11:05:54,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:54,439 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:54,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:54,440 INFO L82 PathProgramCache]: Analyzing trace with hash 59771, now seen corresponding path program 2 times [2020-07-01 11:05:54,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:54,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20538010] [2020-07-01 11:05:54,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:54,453 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:54,454 INFO L82 PathProgramCache]: Analyzing trace with hash 86886007, now seen corresponding path program 1 times [2020-07-01 11:05:54,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:54,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161798197] [2020-07-01 11:05:54,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:05:54,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161798197] [2020-07-01 11:05:54,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303031654] [2020-07-01 11:05:54,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:05:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:54,561 INFO L264 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:05:54,562 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:05:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:05:54,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 11:05:54,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-07-01 11:05:54,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563007269] [2020-07-01 11:05:54,679 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:05:54,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:05:54,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:05:54,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:05:54,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:05:54,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:54,681 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:05:54,681 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:05:54,681 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:05:54,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:05:54,681 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:05:54,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:54,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:54,768 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:05:54,768 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:54,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:05:54,774 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:54,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:05:54,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:05:58,881 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:05:58,885 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:05:58,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:05:58,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:05:58,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:05:58,886 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:05:58,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:58,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:05:58,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:05:58,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:05:58,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:05:58,886 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:05:58,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:58,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:58,952 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:05:58,953 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:58,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:05:58,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:05:58,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:05:58,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:05:58,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:05:58,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:05:58,961 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:05:58,961 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:05:58,965 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:05:58,970 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:05:58,970 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:58,975 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:05:58,975 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:05:58,976 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:05:58,976 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:05:59,007 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:05:59,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:59,027 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:05:59,028 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:05:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:59,034 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:05:59,034 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:05:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:05:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,093 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:05:59,093 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:05:59,094 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 11:05:59,094 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 18 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-07-01 11:05:59,220 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 18 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 33 states and 63 transitions. Complement of second has 20 states. [2020-07-01 11:05:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 11:05:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:05:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-07-01 11:05:59,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:05:59,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:05:59,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 7 letters. Loop has 3 letters. [2020-07-01 11:05:59,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:05:59,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 6 letters. [2020-07-01 11:05:59,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:05:59,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 63 transitions. [2020-07-01 11:05:59,227 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-07-01 11:05:59,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 25 states and 46 transitions. [2020-07-01 11:05:59,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-07-01 11:05:59,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-07-01 11:05:59,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 46 transitions. [2020-07-01 11:05:59,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:05:59,229 INFO L688 BuchiCegarLoop]: Abstraction has 25 states and 46 transitions. [2020-07-01 11:05:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 46 transitions. [2020-07-01 11:05:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 10. [2020-07-01 11:05:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 11:05:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 18 transitions. [2020-07-01 11:05:59,231 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 18 transitions. [2020-07-01 11:05:59,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:05:59,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 11:05:59,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-01 11:05:59,234 INFO L87 Difference]: Start difference. First operand 10 states and 18 transitions. Second operand 5 states. [2020-07-01 11:05:59,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:05:59,309 INFO L93 Difference]: Finished difference Result 21 states and 36 transitions. [2020-07-01 11:05:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 11:05:59,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 36 transitions. [2020-07-01 11:05:59,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2020-07-01 11:05:59,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 36 transitions. [2020-07-01 11:05:59,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-07-01 11:05:59,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-07-01 11:05:59,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 36 transitions. [2020-07-01 11:05:59,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:05:59,314 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 36 transitions. [2020-07-01 11:05:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 36 transitions. [2020-07-01 11:05:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2020-07-01 11:05:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-01 11:05:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 29 transitions. [2020-07-01 11:05:59,316 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 29 transitions. [2020-07-01 11:05:59,316 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 29 transitions. [2020-07-01 11:05:59,317 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:05:59,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 29 transitions. [2020-07-01 11:05:59,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-07-01 11:05:59,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:05:59,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:05:59,318 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:05:59,318 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:05:59,318 INFO L794 eck$LassoCheckResult]: Stem: 238#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 239#L22-1 [2020-07-01 11:05:59,318 INFO L796 eck$LassoCheckResult]: Loop: 239#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 237#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 245#L20-2 [44] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 239#L22-1 [2020-07-01 11:05:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:59,319 INFO L82 PathProgramCache]: Analyzing trace with hash 62, now seen corresponding path program 2 times [2020-07-01 11:05:59,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:59,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167209044] [2020-07-01 11:05:59,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,324 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:59,325 INFO L82 PathProgramCache]: Analyzing trace with hash 59781, now seen corresponding path program 1 times [2020-07-01 11:05:59,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:59,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702791738] [2020-07-01 11:05:59,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,335 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:59,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:59,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1877032, now seen corresponding path program 1 times [2020-07-01 11:05:59,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:05:59,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019756489] [2020-07-01 11:05:59,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:05:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,347 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:05:59,427 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:05:59,427 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:05:59,427 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:05:59,427 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:05:59,428 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:05:59,428 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:59,428 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:05:59,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:05:59,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:05:59,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:05:59,428 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:05:59,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:59,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:59,480 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:05:59,480 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:59,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:05:59,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:05:59,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:05:59,489 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:59,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:05:59,521 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:05:59,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:05:59,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:05:59,651 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:05:59,654 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:05:59,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:05:59,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:05:59,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:05:59,654 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:05:59,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:59,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:05:59,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:05:59,655 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:05:59,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:05:59,655 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:05:59,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:59,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:05:59,717 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:05:59,718 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:59,723 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:05:59,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:05:59,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:05:59,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:05:59,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:05:59,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:05:59,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:05:59,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:05:59,728 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:59,762 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:05:59,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:05:59,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:05:59,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:05:59,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:05:59,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:05:59,767 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:05:59,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:05:59,771 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:05:59,776 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:05:59,776 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:05:59,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:05:59,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:05:59,783 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:05:59,783 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:05:59,813 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:05:59,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:05:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:59,830 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:05:59,831 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:05:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:05:59,838 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:05:59,839 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:05:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:05:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:05:59,900 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:05:59,900 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:05:59,900 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-07-01 11:05:59,900 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 17 states and 29 transitions. cyclomatic complexity: 13 Second operand 4 states. [2020-07-01 11:06:00,005 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 17 states and 29 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 70 states and 121 transitions. Complement of second has 10 states. [2020-07-01 11:06:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 11:06:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:06:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-07-01 11:06:00,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 11:06:00,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:00,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:06:00,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:00,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 11:06:00,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:00,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 121 transitions. [2020-07-01 11:06:00,012 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2020-07-01 11:06:00,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 48 states and 84 transitions. [2020-07-01 11:06:00,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-07-01 11:06:00,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2020-07-01 11:06:00,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 84 transitions. [2020-07-01 11:06:00,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:06:00,015 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 84 transitions. [2020-07-01 11:06:00,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 84 transitions. [2020-07-01 11:06:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 24. [2020-07-01 11:06:00,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-01 11:06:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 43 transitions. [2020-07-01 11:06:00,019 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 43 transitions. [2020-07-01 11:06:00,019 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 43 transitions. [2020-07-01 11:06:00,019 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:06:00,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 43 transitions. [2020-07-01 11:06:00,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-07-01 11:06:00,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:06:00,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:06:00,021 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:06:00,021 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:06:00,021 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 373#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 384#L20 [2020-07-01 11:06:00,021 INFO L796 eck$LassoCheckResult]: Loop: 384#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 386#L20-2 [44] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 385#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 384#L20 [2020-07-01 11:06:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1952, now seen corresponding path program 1 times [2020-07-01 11:06:00,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:00,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032787049] [2020-07-01 11:06:00,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:00,028 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:00,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash 68664, now seen corresponding path program 1 times [2020-07-01 11:06:00,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:00,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628541046] [2020-07-01 11:06:00,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:00,040 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:00,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:00,040 INFO L82 PathProgramCache]: Analyzing trace with hash 58190905, now seen corresponding path program 2 times [2020-07-01 11:06:00,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:00,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173889987] [2020-07-01 11:06:00,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:00,053 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:00,098 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:06:00,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:06:00,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:06:00,099 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:06:00,099 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:06:00,099 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:00,099 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:06:00,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:06:00,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:06:00,100 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:06:00,100 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:06:00,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:00,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:00,153 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:06:00,153 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:00,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:06:00,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:06:00,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:06:00,162 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:00,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:06:00,194 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:00,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:06:00,231 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:06:12,295 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-07-01 11:06:12,300 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:06:12,300 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:06:12,300 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:06:12,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:06:12,300 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:06:12,300 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:12,301 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:06:12,301 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:06:12,301 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:06:12,301 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:06:12,301 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:06:12,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:12,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:12,351 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:06:12,351 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:12,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:06:12,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:06:12,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:06:12,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:06:12,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:06:12,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:06:12,362 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:06:12,362 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:06:12,364 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:12,396 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:06:12,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:06:12,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:06:12,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:06:12,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:06:12,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:06:12,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:06:12,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:06:12,404 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:06:12,408 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:06:12,408 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:12,412 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:06:12,412 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:06:12,412 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:06:12,413 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:06:12,442 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:06:12,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:12,457 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:06:12,458 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:12,462 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:06:12,463 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:12,481 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:06:12,481 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:12,517 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 5 predicates after loop cannibalization [2020-07-01 11:06:12,518 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-07-01 11:06:12,518 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 24 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2020-07-01 11:06:12,621 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 24 states and 43 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 107 states and 184 transitions. Complement of second has 21 states. [2020-07-01 11:06:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 2 accepting loop states [2020-07-01 11:06:12,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:06:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 22 transitions. [2020-07-01 11:06:12,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 11:06:12,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:12,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 11:06:12,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:12,623 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 11:06:12,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:12,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 184 transitions. [2020-07-01 11:06:12,629 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-07-01 11:06:12,630 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 50 states and 82 transitions. [2020-07-01 11:06:12,630 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 11:06:12,631 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-07-01 11:06:12,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 82 transitions. [2020-07-01 11:06:12,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:06:12,631 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 82 transitions. [2020-07-01 11:06:12,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 82 transitions. [2020-07-01 11:06:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 25. [2020-07-01 11:06:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-01 11:06:12,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 46 transitions. [2020-07-01 11:06:12,635 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 46 transitions. [2020-07-01 11:06:12,635 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 46 transitions. [2020-07-01 11:06:12,635 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:06:12,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 46 transitions. [2020-07-01 11:06:12,636 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2020-07-01 11:06:12,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:06:12,636 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:06:12,636 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:06:12,637 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-07-01 11:06:12,637 INFO L794 eck$LassoCheckResult]: Stem: 576#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 570#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 571#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 581#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 585#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 584#L20 [2020-07-01 11:06:12,637 INFO L796 eck$LassoCheckResult]: Loop: 584#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 577#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 578#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 588#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 581#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 585#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 584#L20 [2020-07-01 11:06:12,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:12,638 INFO L82 PathProgramCache]: Analyzing trace with hash 58190874, now seen corresponding path program 1 times [2020-07-01 11:06:12,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:12,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809843798] [2020-07-01 11:06:12,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:12,649 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:12,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2036372856, now seen corresponding path program 1 times [2020-07-01 11:06:12,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:12,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933799701] [2020-07-01 11:06:12,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:12,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933799701] [2020-07-01 11:06:12,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727817438] [2020-07-01 11:06:12,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:06:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:12,708 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:06:12,709 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:12,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 11:06:12,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2020-07-01 11:06:12,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094898121] [2020-07-01 11:06:12,733 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 11:06:12,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:06:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 11:06:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-01 11:06:12,734 INFO L87 Difference]: Start difference. First operand 25 states and 46 transitions. cyclomatic complexity: 23 Second operand 5 states. [2020-07-01 11:06:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:06:12,771 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2020-07-01 11:06:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-01 11:06:12,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 59 transitions. [2020-07-01 11:06:12,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2020-07-01 11:06:12,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 59 transitions. [2020-07-01 11:06:12,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-07-01 11:06:12,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-07-01 11:06:12,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 59 transitions. [2020-07-01 11:06:12,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:06:12,774 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 59 transitions. [2020-07-01 11:06:12,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 59 transitions. [2020-07-01 11:06:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-07-01 11:06:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-01 11:06:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 55 transitions. [2020-07-01 11:06:12,778 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 55 transitions. [2020-07-01 11:06:12,778 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 55 transitions. [2020-07-01 11:06:12,778 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:06:12,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 55 transitions. [2020-07-01 11:06:12,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2020-07-01 11:06:12,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:06:12,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:06:12,780 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:06:12,780 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1] [2020-07-01 11:06:12,780 INFO L794 eck$LassoCheckResult]: Stem: 662#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 656#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 657#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 677#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 674#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 673#L20 [2020-07-01 11:06:12,780 INFO L796 eck$LassoCheckResult]: Loop: 673#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 672#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 676#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 670#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 663#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 664#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 679#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 677#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 674#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 673#L20 [2020-07-01 11:06:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:12,781 INFO L82 PathProgramCache]: Analyzing trace with hash 58190874, now seen corresponding path program 2 times [2020-07-01 11:06:12,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:12,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346023985] [2020-07-01 11:06:12,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:12,791 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash -923463204, now seen corresponding path program 1 times [2020-07-01 11:06:12,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:12,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176935301] [2020-07-01 11:06:12,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:12,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176935301] [2020-07-01 11:06:12,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719492931] [2020-07-01 11:06:12,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:06:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:12,870 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-01 11:06:12,871 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:13,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:06:13,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-07-01 11:06:13,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041170372] [2020-07-01 11:06:13,806 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 11:06:13,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:06:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-01 11:06:13,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2020-07-01 11:06:13,807 INFO L87 Difference]: Start difference. First operand 32 states and 55 transitions. cyclomatic complexity: 25 Second operand 11 states. [2020-07-01 11:06:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:06:14,011 INFO L93 Difference]: Finished difference Result 59 states and 93 transitions. [2020-07-01 11:06:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-01 11:06:14,012 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 93 transitions. [2020-07-01 11:06:14,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2020-07-01 11:06:14,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 59 states and 93 transitions. [2020-07-01 11:06:14,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-07-01 11:06:14,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-07-01 11:06:14,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 93 transitions. [2020-07-01 11:06:14,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:06:14,015 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 93 transitions. [2020-07-01 11:06:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 93 transitions. [2020-07-01 11:06:14,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2020-07-01 11:06:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-01 11:06:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 57 transitions. [2020-07-01 11:06:14,019 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 57 transitions. [2020-07-01 11:06:14,019 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 57 transitions. [2020-07-01 11:06:14,019 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 11:06:14,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 57 transitions. [2020-07-01 11:06:14,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-07-01 11:06:14,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:06:14,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:06:14,020 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:06:14,020 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1] [2020-07-01 11:06:14,021 INFO L794 eck$LassoCheckResult]: Stem: 804#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 805#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 824#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 811#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 821#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 812#L20 [2020-07-01 11:06:14,021 INFO L796 eck$LassoCheckResult]: Loop: 812#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 806#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 799#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 800#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 808#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 813#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 814#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 811#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 821#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 812#L20 [2020-07-01 11:06:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash 58190874, now seen corresponding path program 3 times [2020-07-01 11:06:14,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:14,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506249399] [2020-07-01 11:06:14,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:14,031 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:14,032 INFO L82 PathProgramCache]: Analyzing trace with hash -915151515, now seen corresponding path program 2 times [2020-07-01 11:06:14,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:14,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112933504] [2020-07-01 11:06:14,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:14,049 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1263633772, now seen corresponding path program 1 times [2020-07-01 11:06:14,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:14,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403203555] [2020-07-01 11:06:14,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:14,072 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:14,179 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-07-01 11:06:14,200 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:06:14,201 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:06:14,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:06:14,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:06:14,201 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:06:14,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:14,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:06:14,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:06:14,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 11:06:14,202 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:06:14,202 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:06:14,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:14,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:14,269 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:06:14,269 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:14,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:06:14,276 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-01 11:06:14,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:14,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:06:26,377 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2020-07-01 11:06:26,382 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:06:26,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:06:26,382 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:06:26,382 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:06:26,383 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:06:26,383 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:26,383 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:06:26,383 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:06:26,383 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration7_Loop [2020-07-01 11:06:26,383 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:06:26,384 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:06:26,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:26,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:26,452 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:06:26,452 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:26,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:06:26,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:06:26,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:06:26,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:06:26,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:06:26,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:06:26,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:06:26,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:06:26,466 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:06:26,472 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:06:26,472 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:26,476 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:06:26,477 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:06:26,477 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:06:26,478 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:06:26,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:06:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:26,523 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:06:26,523 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:26,531 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-01 11:06:26,532 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:26,593 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:06:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:26,604 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:06:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:26,616 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:06:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:26,626 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-01 11:06:26,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:26,706 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-01 11:06:26,706 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:26,720 INFO L137 LoopCannibalizer]: termination argument not suffcient for all loop shiftings [2020-07-01 11:06:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:26,730 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-01 11:06:26,730 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:26,765 INFO L98 LoopCannibalizer]: 7 predicates before loop cannibalization 12 predicates after loop cannibalization [2020-07-01 11:06:26,765 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 12 loop predicates [2020-07-01 11:06:26,766 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 33 states and 57 transitions. cyclomatic complexity: 26 Second operand 8 states. [2020-07-01 11:06:27,259 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 33 states and 57 transitions. cyclomatic complexity: 26. Second operand 8 states. Result 391 states and 624 transitions. Complement of second has 95 states. [2020-07-01 11:06:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 13 non-accepting loop states 2 accepting loop states [2020-07-01 11:06:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 11:06:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 41 transitions. [2020-07-01 11:06:27,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 41 transitions. Stem has 5 letters. Loop has 9 letters. [2020-07-01 11:06:27,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:27,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 41 transitions. Stem has 14 letters. Loop has 9 letters. [2020-07-01 11:06:27,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:27,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 41 transitions. Stem has 5 letters. Loop has 18 letters. [2020-07-01 11:06:27,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:27,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 391 states and 624 transitions. [2020-07-01 11:06:27,270 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 77 [2020-07-01 11:06:27,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 391 states to 174 states and 260 transitions. [2020-07-01 11:06:27,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2020-07-01 11:06:27,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2020-07-01 11:06:27,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 260 transitions. [2020-07-01 11:06:27,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:06:27,273 INFO L688 BuchiCegarLoop]: Abstraction has 174 states and 260 transitions. [2020-07-01 11:06:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 260 transitions. [2020-07-01 11:06:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 57. [2020-07-01 11:06:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-01 11:06:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 97 transitions. [2020-07-01 11:06:27,280 INFO L711 BuchiCegarLoop]: Abstraction has 57 states and 97 transitions. [2020-07-01 11:06:27,280 INFO L591 BuchiCegarLoop]: Abstraction has 57 states and 97 transitions. [2020-07-01 11:06:27,280 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2020-07-01 11:06:27,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 97 transitions. [2020-07-01 11:06:27,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2020-07-01 11:06:27,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:06:27,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:06:27,281 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:06:27,281 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1] [2020-07-01 11:06:27,282 INFO L794 eck$LassoCheckResult]: Stem: 1494#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1495#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1521#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 1533#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1544#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1534#L20 [2020-07-01 11:06:27,282 INFO L796 eck$LassoCheckResult]: Loop: 1534#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 1507#L20-2 [44] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1522#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1537#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 1542#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1540#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1541#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 1533#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1544#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1534#L20 [2020-07-01 11:06:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash 58190595, now seen corresponding path program 1 times [2020-07-01 11:06:27,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:27,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8079834] [2020-07-01 11:06:27,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,292 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash 452166776, now seen corresponding path program 1 times [2020-07-01 11:06:27,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:27,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644122812] [2020-07-01 11:06:27,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:27,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644122812] [2020-07-01 11:06:27,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146469111] [2020-07-01 11:06:27,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:06:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:27,344 INFO L264 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:06:27,345 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:27,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:06:27,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 11:06:27,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-07-01 11:06:27,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694664277] [2020-07-01 11:06:27,378 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 11:06:27,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:06:27,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 11:06:27,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-01 11:06:27,379 INFO L87 Difference]: Start difference. First operand 57 states and 97 transitions. cyclomatic complexity: 43 Second operand 5 states. [2020-07-01 11:06:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:06:27,411 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2020-07-01 11:06:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-01 11:06:27,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 86 transitions. [2020-07-01 11:06:27,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:06:27,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 58 states and 84 transitions. [2020-07-01 11:06:27,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-07-01 11:06:27,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-07-01 11:06:27,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 84 transitions. [2020-07-01 11:06:27,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:06:27,415 INFO L688 BuchiCegarLoop]: Abstraction has 58 states and 84 transitions. [2020-07-01 11:06:27,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 84 transitions. [2020-07-01 11:06:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2020-07-01 11:06:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-01 11:06:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 60 transitions. [2020-07-01 11:06:27,418 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-07-01 11:06:27,419 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 60 transitions. [2020-07-01 11:06:27,419 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2020-07-01 11:06:27,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 60 transitions. [2020-07-01 11:06:27,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:06:27,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:06:27,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:06:27,420 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2020-07-01 11:06:27,420 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:06:27,420 INFO L794 eck$LassoCheckResult]: Stem: 1647#ULTIMATE.startENTRY [31] ULTIMATE.startENTRY-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1648#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1657#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 1656#L20-2 [43] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_7)) (= v_ULTIMATE.start_main_~z~0_4 (+ v_ULTIMATE.start_main_~z~0_5 v_ULTIMATE.start_main_~y~0_6)) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~z~0_5 (- 1))) (< 0 |v_ULTIMATE.start_main_#t~nondet2_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1641#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1642#L20 [39] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_9 v_ULTIMATE.start_main_~x~0_13) (>= v_ULTIMATE.start_main_~y~0_13 v_ULTIMATE.start_main_~x~0_13)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_13, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 1649#L20-2 [2020-07-01 11:06:27,420 INFO L796 eck$LassoCheckResult]: Loop: 1649#L20-2 [34] L20-2-->L22-1: Formula: (and (= v_ULTIMATE.start_main_~y~0_8 (+ v_ULTIMATE.start_main_~z~0_7 (- 1))) (= v_ULTIMATE.start_main_~z~0_6 (+ v_ULTIMATE.start_main_~z~0_7 v_ULTIMATE.start_main_~x~0_8)) (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~y~0_9 v_ULTIMATE.start_main_~x~0_9))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~x~0] 1650#L22-1 [30] L22-1-->L20: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_11) (< 0 v_ULTIMATE.start_main_~x~0_11)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_11} AuxVars[] AssignedVars[] 1655#L20 [36] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~z~0_8 v_ULTIMATE.start_main_~y~0_12) (< v_ULTIMATE.start_main_~y~0_12 v_ULTIMATE.start_main_~x~0_12)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~z~0=v_ULTIMATE.start_main_~z~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_12} AuxVars[] AssignedVars[ULTIMATE.start_main_~z~0] 1649#L20-2 [2020-07-01 11:06:27,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:27,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1803827760, now seen corresponding path program 1 times [2020-07-01 11:06:27,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:27,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722283647] [2020-07-01 11:06:27,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,430 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash 63431, now seen corresponding path program 3 times [2020-07-01 11:06:27,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:27,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137352975] [2020-07-01 11:06:27,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,437 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:27,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:27,438 INFO L82 PathProgramCache]: Analyzing trace with hash -797975752, now seen corresponding path program 2 times [2020-07-01 11:06:27,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:06:27,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074911529] [2020-07-01 11:06:27,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:06:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:06:27,450 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:06:27,487 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:06:27,487 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:06:27,487 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:06:27,487 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:06:27,488 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:06:27,488 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:27,488 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:06:27,488 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:06:27,488 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration9_Loop [2020-07-01 11:06:27,488 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:06:27,488 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:06:27,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:27,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:27,535 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:06:27,536 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:27,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:06:27,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:06:27,542 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:06:27,543 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:27,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:06:27,575 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:06:27,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:06:27,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:06:33,442 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:06:33,446 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:06:33,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:06:33,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:06:33,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:06:33,446 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:06:33,446 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:33,446 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:06:33,446 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:06:33,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration9_Loop [2020-07-01 11:06:33,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:06:33,447 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:06:33,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:33,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:06:33,501 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:06:33,501 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:33,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:06:33,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:06:33,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:06:33,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:06:33,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:06:33,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:06:33,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:06:33,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:06:33,509 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:33,541 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:06:33,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:06:33,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:06:33,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:06:33,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:06:33,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:06:33,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:06:33,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:06:33,549 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:06:33,552 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:06:33,552 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:06:33,556 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:06:33,556 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:06:33,556 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:06:33,556 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2020-07-01 11:06:33,585 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:06:33,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:06:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:33,602 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:06:33,603 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:06:33,607 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:06:33,608 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:06:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:06:33,635 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:06:33,635 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 11:06:33,635 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 39 states and 60 transitions. cyclomatic complexity: 25 Second operand 4 states. [2020-07-01 11:06:33,688 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 39 states and 60 transitions. cyclomatic complexity: 25. Second operand 4 states. Result 62 states and 94 transitions. Complement of second has 7 states. [2020-07-01 11:06:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 11:06:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:06:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-07-01 11:06:33,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2020-07-01 11:06:33,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:33,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2020-07-01 11:06:33,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:33,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 6 letters. Loop has 6 letters. [2020-07-01 11:06:33,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:06:33,691 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 94 transitions. [2020-07-01 11:06:33,692 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:06:33,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 0 states and 0 transitions. [2020-07-01 11:06:33,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:06:33,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:06:33,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:06:33,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:06:33,693 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:06:33,693 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:06:33,693 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:06:33,693 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2020-07-01 11:06:33,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:06:33,694 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:06:33,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:06:33,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:06:33 BasicIcfg [2020-07-01 11:06:33,700 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:06:33,701 INFO L168 Benchmark]: Toolchain (without parser) took 41111.55 ms. Allocated memory was 649.6 MB in the beginning and 772.8 MB in the end (delta: 123.2 MB). Free memory was 561.4 MB in the beginning and 460.6 MB in the end (delta: 100.8 MB). Peak memory consumption was 224.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,702 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:06:33,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.54 ms. Allocated memory was 649.6 MB in the beginning and 688.9 MB in the end (delta: 39.3 MB). Free memory was 561.4 MB in the beginning and 651.5 MB in the end (delta: -90.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,703 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.34 ms. Allocated memory is still 688.9 MB. Free memory was 651.5 MB in the beginning and 650.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,703 INFO L168 Benchmark]: Boogie Preprocessor took 19.26 ms. Allocated memory is still 688.9 MB. Free memory was 650.4 MB in the beginning and 649.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,704 INFO L168 Benchmark]: RCFGBuilder took 223.33 ms. Allocated memory is still 688.9 MB. Free memory was 649.3 MB in the beginning and 634.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,704 INFO L168 Benchmark]: BlockEncodingV2 took 71.08 ms. Allocated memory is still 688.9 MB. Free memory was 634.7 MB in the beginning and 629.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,705 INFO L168 Benchmark]: TraceAbstraction took 145.98 ms. Allocated memory is still 688.9 MB. Free memory was 629.3 MB in the beginning and 620.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,705 INFO L168 Benchmark]: BuchiAutomizer took 40328.12 ms. Allocated memory was 688.9 MB in the beginning and 772.8 MB in the end (delta: 83.9 MB). Free memory was 620.6 MB in the beginning and 460.6 MB in the end (delta: 160.0 MB). Peak memory consumption was 243.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:06:33,709 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 7 locations, 10 edges - StatisticsResult: Encoded RCFG 4 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.3 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 284.54 ms. Allocated memory was 649.6 MB in the beginning and 688.9 MB in the end (delta: 39.3 MB). Free memory was 561.4 MB in the beginning and 651.5 MB in the end (delta: -90.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.34 ms. Allocated memory is still 688.9 MB. Free memory was 651.5 MB in the beginning and 650.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.26 ms. Allocated memory is still 688.9 MB. Free memory was 650.4 MB in the beginning and 649.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 223.33 ms. Allocated memory is still 688.9 MB. Free memory was 649.3 MB in the beginning and 634.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.08 ms. Allocated memory is still 688.9 MB. Free memory was 634.7 MB in the beginning and 629.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.98 ms. Allocated memory is still 688.9 MB. Free memory was 629.3 MB in the beginning and 620.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 40328.12 ms. Allocated memory was 688.9 MB in the beginning and 772.8 MB in the end (delta: 83.9 MB). Free memory was 620.6 MB in the beginning and 460.6 MB in the end (delta: 160.0 MB). Peak memory consumption was 243.9 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (4 trivial, 0 deterministic, 6 nondeterministic). One nondeterministic module has affine ranking function y and consists of 6 locations. One nondeterministic module has affine ranking function y and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 16 locations. One nondeterministic module has affine ranking function z and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 40.2s and 10 iterations. TraceHistogramMax:3. Analysis of lassos took 38.0s. Construction of modules took 0.4s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 233 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 57 states and ocurred in iteration 7. Nontrivial modules had stage [6, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 5/9 HoareTripleCheckerStatistics: 42 SDtfs, 140 SDslu, 4 SDs, 0 SdLazy, 522 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax100 hnf100 lsp89 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf93 smp100 dnf100 smp100 tf104 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 34.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:05:49.212 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_WSQh9q/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:06:35.143 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check