/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 11:57:51,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:57:51,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:57:51,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:57:51,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:57:51,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:57:51,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:57:51,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:57:51,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:57:51,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:57:51,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:57:51,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:57:51,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:57:51,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:57:51,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:57:51,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:57:51,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:57:51,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:57:51,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:57:51,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:57:51,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:57:51,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:57:51,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:57:51,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:57:51,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:57:51,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:57:51,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:57:51,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:57:51,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:57:51,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:57:51,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:57:51,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:57:51,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:57:51,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:57:51,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:57:51,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:57:51,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:57:51,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:57:51,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:57:51,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:57:51,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:57:51,543 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:57:51,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:57:51,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:57:51,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:57:51,559 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:57:51,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:57:51,559 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:57:51,560 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:57:51,560 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:57:51,560 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:57:51,560 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:57:51,560 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:57:51,561 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:57:51,561 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:57:51,561 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:57:51,561 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:51,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:57:51,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:57:51,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:57:51,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:57:51,562 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:57:51,562 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:57:51,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:57:51,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:57:51,563 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:57:51,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:57:51,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:57:51,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:57:51,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:57:51,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:57:51,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:57:51,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:57:51,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:57:51,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:57:51,758 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:57:51,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:57:51,855 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_P9p4EV/tmp/890901d0739b4c17bbe6f9be47e36988/FLAG0ad88d1f9 [2020-07-01 11:57:52,192 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:57:52,193 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:57:52,200 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_P9p4EV/tmp/890901d0739b4c17bbe6f9be47e36988/FLAG0ad88d1f9 [2020-07-01 11:57:52,592 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_P9p4EV/tmp/890901d0739b4c17bbe6f9be47e36988 [2020-07-01 11:57:52,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:57:52,606 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:57:52,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:57:52,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:57:52,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:57:52,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1c6da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52, skipping insertion in model container [2020-07-01 11:57:52,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:57:52,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:57:52,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:57:52,882 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:57:52,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:57:52,914 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:57:52,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52 WrapperNode [2020-07-01 11:57:52,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:57:52,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:57:52,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:57:52,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:57:52,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:57:52,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:57:52,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:57:52,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:57:52,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (1/1) ... [2020-07-01 11:57:52,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:57:52,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:57:52,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:57:52,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:57:52,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (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 11:57:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:57:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:57:53,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:57:53,225 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-01 11:57:53,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:57:53 BoogieIcfgContainer [2020-07-01 11:57:53,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:57:53,229 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:57:53,229 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:57:53,231 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:57:53,232 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:57:53" (1/1) ... [2020-07-01 11:57:53,244 INFO L313 BlockEncoder]: Initial Icfg 10 locations, 13 edges [2020-07-01 11:57:53,245 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:57:53,246 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:57:53,247 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:57:53,247 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:57:53,249 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:57:53,250 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:57:53,250 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:57:53,265 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:57:53,281 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 11:57:53,285 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:57:53,287 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:57:53,297 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 11:57:53,299 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-07-01 11:57:53,301 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:57:53,301 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:57:53,304 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:57:53,305 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:57:53,305 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:57:53,305 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:57:53,305 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:57:53,306 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:57:53,306 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-07-01 11:57:53,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:57:53 BasicIcfg [2020-07-01 11:57:53,307 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:57:53,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:57:53,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:57:53,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:57:53,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:57:52" (1/4) ... [2020-07-01 11:57:53,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3b3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:57:53, skipping insertion in model container [2020-07-01 11:57:53,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (2/4) ... [2020-07-01 11:57:53,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3b3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:57:53, skipping insertion in model container [2020-07-01 11:57:53,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:57:53" (3/4) ... [2020-07-01 11:57:53,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3b3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:57:53, skipping insertion in model container [2020-07-01 11:57:53,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:57:53" (4/4) ... [2020-07-01 11:57:53,317 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:57:53,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:57:53,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:57:53,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:57:53,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:57:53,373 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:57:53,373 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:57:53,373 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:57:53,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:57:53,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:57:53,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:57:53,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:57:53,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 11:57:53,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:57:53,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 11:57:53,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:57:53,450 INFO L268 CegarLoopResult]: For program point L11(lines 11 15) no Hoare annotation was computed. [2020-07-01 11:57:53,450 INFO L268 CegarLoopResult]: For program point L11-2(lines 11 15) no Hoare annotation was computed. [2020-07-01 11:57:53,451 INFO L271 CegarLoopResult]: At program point L10-2(lines 10 17) the Hoare annotation is: true [2020-07-01 11:57:53,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:57:53 BasicIcfg [2020-07-01 11:57:53,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:57:53,460 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:57:53,460 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:57:53,463 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:57:53,464 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:57:53,464 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:57:52" (1/5) ... [2020-07-01 11:57:53,465 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50ebd5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:57:53, skipping insertion in model container [2020-07-01 11:57:53,465 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:57:53,465 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:57:52" (2/5) ... [2020-07-01 11:57:53,466 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50ebd5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:57:53, skipping insertion in model container [2020-07-01 11:57:53,466 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:57:53,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:57:53" (3/5) ... [2020-07-01 11:57:53,466 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50ebd5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:57:53, skipping insertion in model container [2020-07-01 11:57:53,467 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:57:53,467 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:57:53" (4/5) ... [2020-07-01 11:57:53,467 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50ebd5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:57:53, skipping insertion in model container [2020-07-01 11:57:53,467 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:57:53,467 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:57:53" (5/5) ... [2020-07-01 11:57:53,469 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:57:53,498 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:57:53,498 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:57:53,498 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:57:53,498 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:57:53,499 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:57:53,499 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:57:53,499 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:57:53,499 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:57:53,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 11:57:53,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:57:53,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:57:53,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:57:53,528 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:57:53,528 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:57:53,528 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:57:53,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 11:57:53,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:57:53,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:57:53,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:57:53,530 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:57:53,530 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:57:53,536 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [55] ULTIMATE.startENTRY-->L10-2: Formula: (and (< 0 v_ULTIMATE.start_test_fun_~x_12) (= |v_ULTIMATE.start_test_fun_#in~x_2| |v_ULTIMATE.start_main_#t~nondet0_5|) (= |v_ULTIMATE.start_test_fun_#in~y_2| |v_ULTIMATE.start_main_#t~nondet1_5|) (= v_ULTIMATE.start_test_fun_~y_7 |v_ULTIMATE.start_test_fun_#in~y_2|) (= |v_ULTIMATE.start_test_fun_#in~x_2| v_ULTIMATE.start_test_fun_~x_12) (= 0 v_ULTIMATE.start_test_fun_~c~0_7) (< 0 v_ULTIMATE.start_test_fun_~y_7)) InVars {} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_7, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_5|, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_12, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_test_fun_#res=|v_ULTIMATE.start_test_fun_#res_8|, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_7, ULTIMATE.start_test_fun_#in~y=|v_ULTIMATE.start_test_fun_#in~y_2|, ULTIMATE.start_test_fun_#in~x=|v_ULTIMATE.start_test_fun_#in~x_2|} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_test_fun_~x, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_test_fun_#res, ULTIMATE.start_test_fun_~c~0, ULTIMATE.start_test_fun_#in~y, ULTIMATE.start_test_fun_#in~x] 5#L10-2true [2020-07-01 11:57:53,537 INFO L796 eck$LassoCheckResult]: Loop: 5#L10-2true [50] L10-2-->L11: Formula: (> 0 v_ULTIMATE.start_test_fun_~x_6) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} OutVars{ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} AuxVars[] AssignedVars[] 4#L11true [33] L11-->L11-2: Formula: (and (< v_ULTIMATE.start_test_fun_~y_5 v_ULTIMATE.start_test_fun_~x_8) (= v_ULTIMATE.start_test_fun_~x_7 v_ULTIMATE.start_test_fun_~y_5)) InVars {ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_5, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_8} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_5, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_7} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~x] 6#L11-2true [44] L11-2-->L10-2: Formula: (= v_ULTIMATE.start_test_fun_~c~0_3 (+ v_ULTIMATE.start_test_fun_~c~0_4 1)) InVars {ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_4} OutVars{ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_3} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~c~0] 5#L10-2true [2020-07-01 11:57:53,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:53,544 INFO L82 PathProgramCache]: Analyzing trace with hash 86, now seen corresponding path program 1 times [2020-07-01 11:57:53,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:53,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969356458] [2020-07-01 11:57:53,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:53,638 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:53,639 INFO L82 PathProgramCache]: Analyzing trace with hash 78908, now seen corresponding path program 1 times [2020-07-01 11:57:53,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:53,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17462761] [2020-07-01 11:57:53,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:53,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2611143, now seen corresponding path program 1 times [2020-07-01 11:57:53,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:53,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479031353] [2020-07-01 11:57:53,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:53,702 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 11:57:53,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479031353] [2020-07-01 11:57:53,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:57:53,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 11:57:53,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724858419] [2020-07-01 11:57:53,751 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:57:53,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:57:53,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:57:53,752 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:57:53,752 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:57:53,753 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:53,753 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:57:53,753 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:57:53,753 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:57:53,753 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:57:53,754 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:57:53,773 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 11:57:53,791 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 11:57:53,864 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:57:53,865 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 11:57:53,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:57:53,874 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 11:57:53,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:57:53,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:57:54,132 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:57:54,135 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:57:54,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:57:54,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:57:54,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:57:54,136 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:57:54,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:57:54,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:57:54,136 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:57:54,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:57:54,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:57:54,137 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:57:54,138 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 11:57:54,159 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 11:57:54,202 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:57:54,208 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 11:57:54,214 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 11:57:54,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:57:54,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:57:54,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:57:54,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:57:54,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:57:54,222 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:57:54,222 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:57:54,226 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:57:54,235 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:57:54,235 INFO L444 ModelExtractionUtils]: 0 out of 4 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 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 11:57:54,246 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:57:54,246 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:57:54,247 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:57:54,248 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_fun_~x, ULTIMATE.start_test_fun_~y) = 1*ULTIMATE.start_test_fun_~x - 1*ULTIMATE.start_test_fun_~y Supporting invariants [] [2020-07-01 11:57:54,284 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:57:54,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:54,333 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:57:54,335 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:57:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:54,345 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:57:54,345 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:57:54,377 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 11:57:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:54,413 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:57:54,414 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:57:54,415 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:57:54,420 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 11:57:54,421 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-07-01 11:57:54,522 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 15 states and 26 transitions. Complement of second has 8 states. [2020-07-01 11:57:54,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 11:57:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:57:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2020-07-01 11:57:54,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 11:57:54,529 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:57:54,529 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:57:54,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:57:54,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 11:57:54,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:57:54,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 26 transitions. [2020-07-01 11:57:54,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:57:54,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 9 states and 14 transitions. [2020-07-01 11:57:54,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 11:57:54,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 11:57:54,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2020-07-01 11:57:54,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:57:54,547 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 11:57:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2020-07-01 11:57:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-07-01 11:57:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 11:57:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2020-07-01 11:57:54,577 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 10 transitions. [2020-07-01 11:57:54,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:57:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:57:54,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:57:54,581 INFO L87 Difference]: Start difference. First operand 6 states and 10 transitions. Second operand 3 states. [2020-07-01 11:57:54,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:57:54,596 INFO L93 Difference]: Finished difference Result 7 states and 9 transitions. [2020-07-01 11:57:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:57:54,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 9 transitions. [2020-07-01 11:57:54,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:57:54,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 9 transitions. [2020-07-01 11:57:54,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:57:54,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:57:54,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2020-07-01 11:57:54,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:57:54,600 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-07-01 11:57:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2020-07-01 11:57:54,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-07-01 11:57:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 11:57:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-07-01 11:57:54,602 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 11:57:54,602 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-07-01 11:57:54,602 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:57:54,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-07-01 11:57:54,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:57:54,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:57:54,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:57:54,603 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:57:54,604 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:57:54,604 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY [55] ULTIMATE.startENTRY-->L10-2: Formula: (and (< 0 v_ULTIMATE.start_test_fun_~x_12) (= |v_ULTIMATE.start_test_fun_#in~x_2| |v_ULTIMATE.start_main_#t~nondet0_5|) (= |v_ULTIMATE.start_test_fun_#in~y_2| |v_ULTIMATE.start_main_#t~nondet1_5|) (= v_ULTIMATE.start_test_fun_~y_7 |v_ULTIMATE.start_test_fun_#in~y_2|) (= |v_ULTIMATE.start_test_fun_#in~x_2| v_ULTIMATE.start_test_fun_~x_12) (= 0 v_ULTIMATE.start_test_fun_~c~0_7) (< 0 v_ULTIMATE.start_test_fun_~y_7)) InVars {} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_7, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_5|, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_12, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_test_fun_#res=|v_ULTIMATE.start_test_fun_#res_8|, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_7, ULTIMATE.start_test_fun_#in~y=|v_ULTIMATE.start_test_fun_#in~y_2|, ULTIMATE.start_test_fun_#in~x=|v_ULTIMATE.start_test_fun_#in~x_2|} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_test_fun_~x, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_test_fun_#res, ULTIMATE.start_test_fun_~c~0, ULTIMATE.start_test_fun_#in~y, ULTIMATE.start_test_fun_#in~x] 87#L10-2 [51] L10-2-->L11: Formula: (< 0 v_ULTIMATE.start_test_fun_~x_6) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} OutVars{ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} AuxVars[] AssignedVars[] 88#L11 [2020-07-01 11:57:54,604 INFO L796 eck$LassoCheckResult]: Loop: 88#L11 [47] L11-->L11-2: Formula: (and (= v_ULTIMATE.start_test_fun_~x_9 (+ v_ULTIMATE.start_test_fun_~x_10 (- 1))) (>= v_ULTIMATE.start_test_fun_~y_6 v_ULTIMATE.start_test_fun_~x_10)) InVars {ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_10} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_9} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~x] 89#L11-2 [44] L11-2-->L10-2: Formula: (= v_ULTIMATE.start_test_fun_~c~0_3 (+ v_ULTIMATE.start_test_fun_~c~0_4 1)) InVars {ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_4} OutVars{ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_3} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~c~0] 90#L10-2 [50] L10-2-->L11: Formula: (> 0 v_ULTIMATE.start_test_fun_~x_6) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} OutVars{ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} AuxVars[] AssignedVars[] 88#L11 [2020-07-01 11:57:54,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:54,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2717, now seen corresponding path program 1 times [2020-07-01 11:57:54,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:54,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032385286] [2020-07-01 11:57:54,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:54,616 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:54,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:54,617 INFO L82 PathProgramCache]: Analyzing trace with hash 76372, now seen corresponding path program 1 times [2020-07-01 11:57:54,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:54,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650941669] [2020-07-01 11:57:54,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:54,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:54,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:54,626 INFO L82 PathProgramCache]: Analyzing trace with hash 80988728, now seen corresponding path program 1 times [2020-07-01 11:57:54,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:54,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978602499] [2020-07-01 11:57:54,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:57:54,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978602499] [2020-07-01 11:57:54,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585888509] [2020-07-01 11:57:54,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:57:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:54,694 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:57:54,694 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:57:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:57:54,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:57:54,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-07-01 11:57:54,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003678125] [2020-07-01 11:57:54,724 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:57:54,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:57:54,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:57:54,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:57:54,725 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:57:54,725 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:54,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:57:54,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:57:54,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:57:54,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:57:54,726 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:57:54,727 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 11:57:54,732 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 11:57:54,780 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:57:54,780 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:54,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:57:54,795 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 11:57:54,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:57:54,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:57:54,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:57:54,858 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_fun_~c~0=0} Honda state: {ULTIMATE.start_test_fun_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_test_fun_~c~0=6}, {ULTIMATE.start_test_fun_~c~0=-5}, {ULTIMATE.start_test_fun_~c~0=0}] Lambdas: [1, 1, 3] Nus: [0, 0] 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 11:57:54,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:57:54,894 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:54,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:57:54,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:57:54,965 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:57:54,966 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_fun_~y=-2, ULTIMATE.start_test_fun_~x=-2} Honda state: {ULTIMATE.start_test_fun_~y=-2, ULTIMATE.start_test_fun_~x=-2} Generalized eigenvectors: [{ULTIMATE.start_test_fun_~y=0, ULTIMATE.start_test_fun_~x=0}, {ULTIMATE.start_test_fun_~y=0, ULTIMATE.start_test_fun_~x=-1}, {ULTIMATE.start_test_fun_~y=0, ULTIMATE.start_test_fun_~x=0}] Lambdas: [1, 1, 4] Nus: [0, 0] [2020-07-01 11:57:54,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:57:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:57:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 11:57:54,999 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-07-01 11:57:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:57:55,024 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2020-07-01 11:57:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:57:55,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2020-07-01 11:57:55,027 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 11:57:55,028 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 11 transitions. [2020-07-01 11:57:55,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 11:57:55,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 11:57:55,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2020-07-01 11:57:55,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:57:55,029 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-07-01 11:57:55,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2020-07-01 11:57:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-07-01 11:57:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 11:57:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2020-07-01 11:57:55,030 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-07-01 11:57:55,030 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-07-01 11:57:55,031 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:57:55,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2020-07-01 11:57:55,031 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 11:57:55,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:57:55,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:57:55,032 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:57:55,032 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:57:55,032 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY [55] ULTIMATE.startENTRY-->L10-2: Formula: (and (< 0 v_ULTIMATE.start_test_fun_~x_12) (= |v_ULTIMATE.start_test_fun_#in~x_2| |v_ULTIMATE.start_main_#t~nondet0_5|) (= |v_ULTIMATE.start_test_fun_#in~y_2| |v_ULTIMATE.start_main_#t~nondet1_5|) (= v_ULTIMATE.start_test_fun_~y_7 |v_ULTIMATE.start_test_fun_#in~y_2|) (= |v_ULTIMATE.start_test_fun_#in~x_2| v_ULTIMATE.start_test_fun_~x_12) (= 0 v_ULTIMATE.start_test_fun_~c~0_7) (< 0 v_ULTIMATE.start_test_fun_~y_7)) InVars {} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_7, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_5|, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_12, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_test_fun_#res=|v_ULTIMATE.start_test_fun_#res_8|, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_7, ULTIMATE.start_test_fun_#in~y=|v_ULTIMATE.start_test_fun_#in~y_2|, ULTIMATE.start_test_fun_#in~x=|v_ULTIMATE.start_test_fun_#in~x_2|} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_test_fun_~x, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_test_fun_#res, ULTIMATE.start_test_fun_~c~0, ULTIMATE.start_test_fun_#in~y, ULTIMATE.start_test_fun_#in~x] 123#L10-2 [51] L10-2-->L11: Formula: (< 0 v_ULTIMATE.start_test_fun_~x_6) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} OutVars{ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} AuxVars[] AssignedVars[] 127#L11 [2020-07-01 11:57:55,032 INFO L796 eck$LassoCheckResult]: Loop: 127#L11 [47] L11-->L11-2: Formula: (and (= v_ULTIMATE.start_test_fun_~x_9 (+ v_ULTIMATE.start_test_fun_~x_10 (- 1))) (>= v_ULTIMATE.start_test_fun_~y_6 v_ULTIMATE.start_test_fun_~x_10)) InVars {ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_10} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_9} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~x] 130#L11-2 [44] L11-2-->L10-2: Formula: (= v_ULTIMATE.start_test_fun_~c~0_3 (+ v_ULTIMATE.start_test_fun_~c~0_4 1)) InVars {ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_4} OutVars{ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_3} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~c~0] 126#L10-2 [51] L10-2-->L11: Formula: (< 0 v_ULTIMATE.start_test_fun_~x_6) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} OutVars{ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} AuxVars[] AssignedVars[] 127#L11 [2020-07-01 11:57:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:55,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2717, now seen corresponding path program 2 times [2020-07-01 11:57:55,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:55,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95793800] [2020-07-01 11:57:55,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,043 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:55,043 INFO L82 PathProgramCache]: Analyzing trace with hash 76373, now seen corresponding path program 1 times [2020-07-01 11:57:55,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:55,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051697372] [2020-07-01 11:57:55,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,051 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:55,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash 80988729, now seen corresponding path program 1 times [2020-07-01 11:57:55,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:55,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790714879] [2020-07-01 11:57:55,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,065 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:55,091 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:57:55,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:57:55,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:57:55,092 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:57:55,092 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:57:55,092 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:55,092 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:57:55,092 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:57:55,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:57:55,093 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:57:55,093 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:57:55,094 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 11:57:55,114 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 11:57:55,162 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:57:55,162 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:55,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:57:55,166 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 11:57:55,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:57:55,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:57:55,316 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:57:55,319 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:57:55,319 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:57:55,320 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:57:55,320 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:57:55,320 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:57:55,320 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:57:55,320 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:57:55,320 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:57:55,321 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:57:55,321 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:57:55,321 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:57:55,322 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 11:57:55,340 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 11:57:55,377 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:57:55,377 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:57:55,381 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 11:57:55,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:57:55,383 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:57:55,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:57:55,384 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:57:55,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:57:55,385 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:57:55,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:57:55,389 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:57:55,394 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:57:55,394 INFO L444 ModelExtractionUtils]: 1 out of 4 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 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:57:55,400 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:57:55,400 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:57:55,400 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:57:55,400 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_fun_~x) = 1*ULTIMATE.start_test_fun_~x Supporting invariants [] [2020-07-01 11:57:55,433 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:57:55,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:55,454 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:57:55,454 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:57:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:55,459 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:57:55,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:57:55,469 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 11:57:55,470 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:57:55,470 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 2 loop predicates [2020-07-01 11:57:55,470 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-07-01 11:57:55,501 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2020-07-01 11:57:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:57:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:57:55,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-07-01 11:57:55,503 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 11:57:55,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:57:55,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 11:57:55,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:57:55,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 11:57:55,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:57:55,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-07-01 11:57:55,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:57:55,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 7 states and 7 transitions. [2020-07-01 11:57:55,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 11:57:55,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:57:55,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2020-07-01 11:57:55,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:57:55,508 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-07-01 11:57:55,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2020-07-01 11:57:55,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-07-01 11:57:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 11:57:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-07-01 11:57:55,509 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-07-01 11:57:55,509 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-07-01 11:57:55,510 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:57:55,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2020-07-01 11:57:55,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:57:55,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:57:55,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:57:55,511 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:57:55,511 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:57:55,512 INFO L794 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY [55] ULTIMATE.startENTRY-->L10-2: Formula: (and (< 0 v_ULTIMATE.start_test_fun_~x_12) (= |v_ULTIMATE.start_test_fun_#in~x_2| |v_ULTIMATE.start_main_#t~nondet0_5|) (= |v_ULTIMATE.start_test_fun_#in~y_2| |v_ULTIMATE.start_main_#t~nondet1_5|) (= v_ULTIMATE.start_test_fun_~y_7 |v_ULTIMATE.start_test_fun_#in~y_2|) (= |v_ULTIMATE.start_test_fun_#in~x_2| v_ULTIMATE.start_test_fun_~x_12) (= 0 v_ULTIMATE.start_test_fun_~c~0_7) (< 0 v_ULTIMATE.start_test_fun_~y_7)) InVars {} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_7, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_5|, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_12, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_5|, ULTIMATE.start_main_#t~ret2=|v_ULTIMATE.start_main_#t~ret2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_test_fun_#res=|v_ULTIMATE.start_test_fun_#res_8|, ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_7, ULTIMATE.start_test_fun_#in~y=|v_ULTIMATE.start_test_fun_#in~y_2|, ULTIMATE.start_test_fun_#in~x=|v_ULTIMATE.start_test_fun_#in~x_2|} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~y, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_test_fun_~x, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~ret2, ULTIMATE.start_main_#res, ULTIMATE.start_test_fun_#res, ULTIMATE.start_test_fun_~c~0, ULTIMATE.start_test_fun_#in~y, ULTIMATE.start_test_fun_#in~x] 183#L10-2 [51] L10-2-->L11: Formula: (< 0 v_ULTIMATE.start_test_fun_~x_6) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} OutVars{ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} AuxVars[] AssignedVars[] 187#L11 [33] L11-->L11-2: Formula: (and (< v_ULTIMATE.start_test_fun_~y_5 v_ULTIMATE.start_test_fun_~x_8) (= v_ULTIMATE.start_test_fun_~x_7 v_ULTIMATE.start_test_fun_~y_5)) InVars {ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_5, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_8} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_5, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_7} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~x] 185#L11-2 [2020-07-01 11:57:55,512 INFO L796 eck$LassoCheckResult]: Loop: 185#L11-2 [44] L11-2-->L10-2: Formula: (= v_ULTIMATE.start_test_fun_~c~0_3 (+ v_ULTIMATE.start_test_fun_~c~0_4 1)) InVars {ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_4} OutVars{ULTIMATE.start_test_fun_~c~0=v_ULTIMATE.start_test_fun_~c~0_3} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~c~0] 186#L10-2 [50] L10-2-->L11: Formula: (> 0 v_ULTIMATE.start_test_fun_~x_6) InVars {ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} OutVars{ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_6} AuxVars[] AssignedVars[] 184#L11 [47] L11-->L11-2: Formula: (and (= v_ULTIMATE.start_test_fun_~x_9 (+ v_ULTIMATE.start_test_fun_~x_10 (- 1))) (>= v_ULTIMATE.start_test_fun_~y_6 v_ULTIMATE.start_test_fun_~x_10)) InVars {ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_10} OutVars{ULTIMATE.start_test_fun_~y=v_ULTIMATE.start_test_fun_~y_6, ULTIMATE.start_test_fun_~x=v_ULTIMATE.start_test_fun_~x_9} AuxVars[] AssignedVars[ULTIMATE.start_test_fun_~x] 185#L11-2 [2020-07-01 11:57:55,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:55,512 INFO L82 PathProgramCache]: Analyzing trace with hash 84260, now seen corresponding path program 1 times [2020-07-01 11:57:55,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:55,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933690926] [2020-07-01 11:57:55,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,523 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:55,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:55,523 INFO L82 PathProgramCache]: Analyzing trace with hash 73672, now seen corresponding path program 2 times [2020-07-01 11:57:55,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:55,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535501514] [2020-07-01 11:57:55,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:57:55,532 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:57:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:57:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1784733755, now seen corresponding path program 1 times [2020-07-01 11:57:55,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:57:55,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272775048] [2020-07-01 11:57:55,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:57:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:57:55,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272775048] [2020-07-01 11:57:55,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223100762] [2020-07-01 11:57:55,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:57:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:57:55,577 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:57:55,578 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:57:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:57:55,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:57:55,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-07-01 11:57:55,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811405405] [2020-07-01 11:57:55,606 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:57:55,606 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:57:55,606 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:57:55,606 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:57:55,606 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:57:55,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:55,607 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:57:55,607 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:57:55,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:57:55,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:57:55,607 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:57:55,608 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 11:57:55,617 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 11:57:55,650 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:57:55,651 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:55,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:57:55,657 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:57:55,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:57:55,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:57:55,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:57:55,720 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_fun_~y=-1, ULTIMATE.start_test_fun_~x=-1} Honda state: {ULTIMATE.start_test_fun_~y=-1, ULTIMATE.start_test_fun_~x=-1} Generalized eigenvectors: [{ULTIMATE.start_test_fun_~y=1, ULTIMATE.start_test_fun_~x=0}, {ULTIMATE.start_test_fun_~y=0, ULTIMATE.start_test_fun_~x=0}, {ULTIMATE.start_test_fun_~y=-1, ULTIMATE.start_test_fun_~x=-1}] Lambdas: [1, 15, 1] Nus: [1, 0] 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 11:57:55,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:57:55,758 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 11:57:55,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:57:55,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:57:55,815 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:57:55,815 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_fun_~c~0=0} Honda state: {ULTIMATE.start_test_fun_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_test_fun_~c~0=6}, {ULTIMATE.start_test_fun_~c~0=-5}, {ULTIMATE.start_test_fun_~c~0=0}] Lambdas: [1, 1, 3] Nus: [0, 0] [2020-07-01 11:57:55,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:57:55,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:57:55,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 11:57:55,847 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. cyclomatic complexity: 1 Second operand 4 states. [2020-07-01 11:57:55,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:57:55,893 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-07-01 11:57:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:57:55,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5 states and 4 transitions. [2020-07-01 11:57:55,895 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:57:55,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5 states to 0 states and 0 transitions. [2020-07-01 11:57:55,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:57:55,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:57:55,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:57:55,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:57:55,896 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:57:55,896 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:57:55,896 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:57:55,896 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:57:55,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:57:55,897 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:57:55,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:57:55,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:57:55 BasicIcfg [2020-07-01 11:57:55,903 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:57:55,905 INFO L168 Benchmark]: Toolchain (without parser) took 3299.22 ms. Allocated memory was 649.6 MB in the beginning and 753.4 MB in the end (delta: 103.8 MB). Free memory was 561.8 MB in the beginning and 703.4 MB in the end (delta: -141.6 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:57:55,906 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 11:57:55,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.74 ms. Allocated memory was 649.6 MB in the beginning and 684.2 MB in the end (delta: 34.6 MB). Free memory was 561.8 MB in the beginning and 647.0 MB in the end (delta: -85.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:57:55,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.93 ms. Allocated memory is still 684.2 MB. Free memory was 647.0 MB in the beginning and 646.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:57:55,908 INFO L168 Benchmark]: Boogie Preprocessor took 20.48 ms. Allocated memory is still 684.2 MB. Free memory was 646.0 MB in the beginning and 644.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:57:55,909 INFO L168 Benchmark]: RCFGBuilder took 257.58 ms. Allocated memory is still 684.2 MB. Free memory was 644.9 MB in the beginning and 629.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:57:55,911 INFO L168 Benchmark]: BlockEncodingV2 took 77.63 ms. Allocated memory is still 684.2 MB. Free memory was 629.3 MB in the beginning and 623.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:57:55,911 INFO L168 Benchmark]: TraceAbstraction took 151.51 ms. Allocated memory is still 684.2 MB. Free memory was 622.8 MB in the beginning and 614.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:57:55,912 INFO L168 Benchmark]: BuchiAutomizer took 2443.15 ms. Allocated memory was 684.2 MB in the beginning and 753.4 MB in the end (delta: 69.2 MB). Free memory was 614.1 MB in the beginning and 703.4 MB in the end (delta: -89.3 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:57:55,930 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 13 edges - StatisticsResult: Encoded RCFG 4 locations, 6 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 307.74 ms. Allocated memory was 649.6 MB in the beginning and 684.2 MB in the end (delta: 34.6 MB). Free memory was 561.8 MB in the beginning and 647.0 MB in the end (delta: -85.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.93 ms. Allocated memory is still 684.2 MB. Free memory was 647.0 MB in the beginning and 646.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.48 ms. Allocated memory is still 684.2 MB. Free memory was 646.0 MB in the beginning and 644.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 257.58 ms. Allocated memory is still 684.2 MB. Free memory was 644.9 MB in the beginning and 629.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 77.63 ms. Allocated memory is still 684.2 MB. Free memory was 629.3 MB in the beginning and 623.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 151.51 ms. Allocated memory is still 684.2 MB. Free memory was 622.8 MB in the beginning and 614.1 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2443.15 ms. Allocated memory was 684.2 MB in the beginning and 753.4 MB in the end (delta: 69.2 MB). Free memory was 614.1 MB in the beginning and 703.4 MB in the end (delta: -89.3 MB). There was no memory consumed. 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: 10]: 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 5 terminating modules (3 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function x + -1 * y and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 24 SDslu, 6 SDs, 0 SdLazy, 56 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp71 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf112 neg100 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:57:49.188 ----------------------------------------------- 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_P9p4EV/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:57:56.576 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check