/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:40:53,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:40:53,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:40:53,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:40:53,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:40:53,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:40:53,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:40:53,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:40:53,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:40:53,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:40:53,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:40:53,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:40:53,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:40:53,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:40:53,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:40:53,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:40:53,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:40:53,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:40:53,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:40:53,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:40:53,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:40:53,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:40:53,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:40:53,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:40:53,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:40:53,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:40:53,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:40:53,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:40:53,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:40:53,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:40:53,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:40:53,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:40:53,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:40:53,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:40:53,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:40:53,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:40:53,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:40:53,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:40:53,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:40:53,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:40:53,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:40:53,463 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:40:53,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:40:53,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:40:53,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:40:53,478 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:40:53,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:40:53,479 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:40:53,479 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:40:53,479 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:40:53,479 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:40:53,479 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:40:53,480 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:40:53,480 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:40:53,480 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:40:53,480 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:40:53,480 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:53,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:40:53,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:40:53,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:40:53,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:40:53,481 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:40:53,481 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:40:53,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:40:53,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:40:53,482 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:40:53,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:40:53,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:40:53,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:40:53,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:40:53,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:40:53,649 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:40:53,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:40:53,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:40:53,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:40:53,669 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:40:53,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:40:53,730 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_mGfr69/tmp/e1ab3612244142f0a1402d49f625ba38/FLAG25340e8e7 [2020-07-01 11:40:54,063 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:40:54,064 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:40:54,071 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_mGfr69/tmp/e1ab3612244142f0a1402d49f625ba38/FLAG25340e8e7 [2020-07-01 11:40:54,486 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_mGfr69/tmp/e1ab3612244142f0a1402d49f625ba38 [2020-07-01 11:40:54,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:40:54,499 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:40:54,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:40:54,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:40:54,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:40:54,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679f2031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54, skipping insertion in model container [2020-07-01 11:40:54,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:40:54,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:40:54,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:40:54,763 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:40:54,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:40:54,795 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:40:54,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54 WrapperNode [2020-07-01 11:40:54,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:40:54,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:40:54,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:40:54,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:40:54,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:40:54,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:40:54,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:40:54,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:40:54,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... [2020-07-01 11:40:54,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:40:54,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:40:54,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:40:54,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:40:54,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 11:40:54,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:40:54,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:40:55,081 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:40:55,082 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:40:55,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:55 BoogieIcfgContainer [2020-07-01 11:40:55,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:40:55,087 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:40:55,087 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:40:55,090 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:40:55,091 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:55" (1/1) ... [2020-07-01 11:40:55,104 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 8 edges [2020-07-01 11:40:55,106 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:40:55,107 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:40:55,107 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:40:55,108 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:40:55,110 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:40:55,110 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:40:55,111 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:40:55,126 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:40:55,142 INFO L200 BlockEncoder]: SBE split 2 edges [2020-07-01 11:40:55,147 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:40:55,149 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:40:55,158 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:40:55,160 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:40:55,161 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:40:55,162 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:40:55,162 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:40:55,162 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:40:55,162 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 5 edges [2020-07-01 11:40:55,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:40:55 BasicIcfg [2020-07-01 11:40:55,163 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:40:55,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:40:55,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:40:55,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:40:55,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:40:54" (1/4) ... [2020-07-01 11:40:55,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d4b3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:40:55, skipping insertion in model container [2020-07-01 11:40:55,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (2/4) ... [2020-07-01 11:40:55,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d4b3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:40:55, skipping insertion in model container [2020-07-01 11:40:55,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:55" (3/4) ... [2020-07-01 11:40:55,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d4b3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:40:55, skipping insertion in model container [2020-07-01 11:40:55,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:40:55" (4/4) ... [2020-07-01 11:40:55,172 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:40:55,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:40:55,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:40:55,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:40:55,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:40:55,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:40:55,227 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:40:55,227 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:40:55,227 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:40:55,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:40:55,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:40:55,228 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:40:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:40:55,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:40:55,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:40:55,303 INFO L268 CegarLoopResult]: For program point L16(lines 16 21) no Hoare annotation was computed. [2020-07-01 11:40:55,303 INFO L271 CegarLoopResult]: At program point L16-2(lines 15 22) the Hoare annotation is: true [2020-07-01 11:40:55,303 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:40:55,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:40:55 BasicIcfg [2020-07-01 11:40:55,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:40:55,312 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:40:55,312 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:40:55,316 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:40:55,316 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:40:55,317 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:40:54" (1/5) ... [2020-07-01 11:40:55,317 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eb6048e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:40:55, skipping insertion in model container [2020-07-01 11:40:55,317 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:40:55,318 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:40:54" (2/5) ... [2020-07-01 11:40:55,318 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eb6048e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:40:55, skipping insertion in model container [2020-07-01 11:40:55,318 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:40:55,318 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:55" (3/5) ... [2020-07-01 11:40:55,319 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eb6048e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:40:55, skipping insertion in model container [2020-07-01 11:40:55,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:40:55,319 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:40:55" (4/5) ... [2020-07-01 11:40:55,319 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eb6048e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:40:55, skipping insertion in model container [2020-07-01 11:40:55,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:40:55,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:40:55" (5/5) ... [2020-07-01 11:40:55,321 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:40:55,349 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:40:55,349 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:40:55,350 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:40:55,350 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:40:55,350 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:40:55,350 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:40:55,350 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:40:55,350 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:40:55,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:40:55,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:40:55,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:40:55,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:40:55,379 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:40:55,379 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:40:55,379 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:40:55,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:40:55,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:40:55,380 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:40:55,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:40:55,381 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:40:55,381 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:40:55,386 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [22] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 5#L16-2true [2020-07-01 11:40:55,387 INFO L796 eck$LassoCheckResult]: Loop: 5#L16-2true [29] L16-2-->L16: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_5) (< 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 4#L16true [34] L16-->L16-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0] 5#L16-2true [2020-07-01 11:40:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:55,393 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-07-01 11:40:55,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:55,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753397532] [2020-07-01 11:40:55,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:55,466 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:55,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:55,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1894, now seen corresponding path program 1 times [2020-07-01 11:40:55,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:55,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923722247] [2020-07-01 11:40:55,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:55,489 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:55,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:55,491 INFO L82 PathProgramCache]: Analyzing trace with hash 51866, now seen corresponding path program 1 times [2020-07-01 11:40:55,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:55,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241204642] [2020-07-01 11:40:55,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:55,503 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:55,558 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:40:55,559 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:40:55,559 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:40:55,559 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:40:55,560 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:40:55,560 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:55,560 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:40:55,560 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:40:55,560 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:40:55,561 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:40:55,561 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:40:55,579 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 11:40:55,589 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 11:40:55,593 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 11:40:55,644 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:40:55,645 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 11:40:55,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:40:55,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:40:55,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:40:55,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 11:40:55,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:40:55,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:40:55,703 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:40:55,703 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:55,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:40:55,737 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:55,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:40:55,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:40:55,811 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:40:55,813 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:40:55,814 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:40:55,814 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:40:55,814 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:40:55,814 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:40:55,814 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:55,814 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:40:55,814 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:40:55,815 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:40:55,815 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:40:55,815 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:40:55,816 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 11:40:55,821 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 11:40:55,828 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 11:40:55,873 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:40:55,879 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:55,886 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 11:40:55,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:40:55,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:40:55,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:40:55,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:40:55,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:40:55,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:40:55,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:40:55,897 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:55,933 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 11:40:55,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:40:55,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:40:55,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:40:55,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:40:55,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:40:55,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:40:55,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:40:55,939 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:55,973 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 11:40:55,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:40:55,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:40:55,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:40:55,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:40:55,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:40:55,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:40:55,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:40:55,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:40:55,987 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:40:55,988 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:55,993 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:40:55,993 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:40:55,994 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:40:55,995 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:40:56,028 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:40:56,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:40:56,064 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:40:56,065 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:40:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:40:56,077 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:40:56,077 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:40:56,102 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 11:40:56,128 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:40:56,134 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 11:40:56,135 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:40:56,169 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 12 transitions. Complement of second has 4 states. [2020-07-01 11:40:56,170 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 11:40:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:40:56,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-07-01 11:40:56,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:40:56,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:56,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:40:56,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:56,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:40:56,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:56,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 12 transitions. [2020-07-01 11:40:56,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:40:56,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 12 transitions. [2020-07-01 11:40:56,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:40:56,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:40:56,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 12 transitions. [2020-07-01 11:40:56,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:40:56,206 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:40:56,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 12 transitions. [2020-07-01 11:40:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-01 11:40:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:40:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2020-07-01 11:40:56,235 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:40:56,235 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:40:56,235 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:40:56,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 12 transitions. [2020-07-01 11:40:56,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:40:56,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:40:56,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:40:56,237 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:40:56,237 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:40:56,237 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY [22] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 48#L16-2 [29] L16-2-->L16: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_5) (< 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 43#L16 [24] L16-->L16-2: Formula: (and (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (= v_ULTIMATE.start_main_~x~0_8 |v_ULTIMATE.start_main_#t~nondet3_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 44#L16-2 [2020-07-01 11:40:56,237 INFO L796 eck$LassoCheckResult]: Loop: 44#L16-2 [29] L16-2-->L16: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_5) (< 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 49#L16 [34] L16-->L16-2: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_3|) (= v_ULTIMATE.start_main_~x~0_6 (+ v_ULTIMATE.start_main_~x~0_7 (- 1)))) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_3|} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_~x~0] 44#L16-2 [2020-07-01 11:40:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,238 INFO L82 PathProgramCache]: Analyzing trace with hash 51856, now seen corresponding path program 1 times [2020-07-01 11:40:56,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:56,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355784685] [2020-07-01 11:40:56,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,248 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1894, now seen corresponding path program 2 times [2020-07-01 11:40:56,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:56,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41413876] [2020-07-01 11:40:56,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,256 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:56,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,257 INFO L82 PathProgramCache]: Analyzing trace with hash 49834549, now seen corresponding path program 1 times [2020-07-01 11:40:56,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:56,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739999948] [2020-07-01 11:40:56,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,272 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:56,292 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:40:56,292 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:40:56,292 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:40:56,292 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:40:56,292 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:40:56,293 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:56,293 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:40:56,293 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:40:56,293 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:40:56,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:40:56,293 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:40:56,295 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 11:40:56,303 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 11:40:56,307 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 11:40:56,349 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:40:56,349 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 11:40:56,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:40:56,355 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 11:40:56,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:40:56,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:40:56,431 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:40:56,433 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:40:56,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:40:56,434 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:40:56,434 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:40:56,434 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:40:56,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:56,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:40:56,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:40:56,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:40:56,435 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:40:56,435 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:40:56,436 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 11:40:56,444 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 11:40:56,447 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 11:40:56,479 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:40:56,479 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:56,498 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 11:40:56,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:40:56,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:40:56,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:40:56,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:40:56,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:40:56,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:40:56,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:40:56,506 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:40:56,514 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:40:56,514 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/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 11:40:56,521 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:40:56,521 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:40:56,521 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:40:56,522 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-07-01 11:40:56,552 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:40:56,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:40:56,571 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:40:56,572 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:40:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:40:56,579 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:40:56,580 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:40:56,591 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 11:40:56,607 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:40:56,608 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 11:40:56,608 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-07-01 11:40:56,637 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 9 states and 15 transitions. Complement of second has 4 states. [2020-07-01 11:40:56,638 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 11:40:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:40:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-07-01 11:40:56,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:40:56,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:56,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 11:40:56,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:56,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 11:40:56,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:56,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 15 transitions. [2020-07-01 11:40:56,643 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:40:56,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 15 transitions. [2020-07-01 11:40:56,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:40:56,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:40:56,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 15 transitions. [2020-07-01 11:40:56,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:40:56,644 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 15 transitions. [2020-07-01 11:40:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 15 transitions. [2020-07-01 11:40:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-07-01 11:40:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:40:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-07-01 11:40:56,645 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-07-01 11:40:56,646 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-07-01 11:40:56,646 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:40:56,646 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2020-07-01 11:40:56,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:40:56,646 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:40:56,646 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:40:56,647 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:40:56,647 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:40:56,647 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY [22] ULTIMATE.startENTRY-->L16-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 96#L16-2 [2020-07-01 11:40:56,647 INFO L796 eck$LassoCheckResult]: Loop: 96#L16-2 [29] L16-2-->L16: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_5) (< 0 v_ULTIMATE.start_main_~x~0_5)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} AuxVars[] AssignedVars[] 95#L16 [24] L16-->L16-2: Formula: (and (= 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (= v_ULTIMATE.start_main_~y~0_6 (+ v_ULTIMATE.start_main_~y~0_7 (- 1))) (= v_ULTIMATE.start_main_~x~0_8 |v_ULTIMATE.start_main_#t~nondet3_3|)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_3|} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 96#L16-2 [2020-07-01 11:40:56,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,648 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2020-07-01 11:40:56,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:56,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455905981] [2020-07-01 11:40:56,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,653 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1884, now seen corresponding path program 1 times [2020-07-01 11:40:56,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:56,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959102512] [2020-07-01 11:40:56,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,662 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:56,663 INFO L82 PathProgramCache]: Analyzing trace with hash 51856, now seen corresponding path program 2 times [2020-07-01 11:40:56,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:40:56,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600071451] [2020-07-01 11:40:56,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:40:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:40:56,672 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:40:56,703 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:40:56,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:40:56,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:40:56,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:40:56,704 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:40:56,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:56,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:40:56,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:40:56,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:40:56,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:40:56,704 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:40:56,706 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 11:40:56,710 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 11:40:56,719 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 11:40:56,787 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:40:56,787 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:56,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:40:56,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:40:56,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:40:56,801 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:40:56,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:40:56,836 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/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 11:40:56,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:40:56,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:40:56,909 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:40:56,911 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:40:56,911 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:40:56,911 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:40:56,911 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:40:56,911 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:40:56,911 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:56,911 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:40:56,912 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:40:56,912 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:40:56,912 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:40:56,912 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:40:56,913 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 11:40:56,917 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 11:40:56,924 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 11:40:56,971 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:40:56,972 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:56,977 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 11:40:56,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:40:56,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:40:56,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:40:56,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:40:56,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:40:56,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:40:56,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:40:56,984 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:57,020 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 11:40:57,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:40:57,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:40:57,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:40:57,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:40:57,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:40:57,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:40:57,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:40:57,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:40:57,032 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:40:57,032 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:40:57,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:40:57,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:40:57,036 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:40:57,036 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-07-01 11:40:57,067 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:40:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:40:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:40:57,096 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:40:57,097 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:40:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:40:57,102 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:40:57,102 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:40:57,112 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 11:40:57,124 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:40:57,124 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 11:40:57,124 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-07-01 11:40:57,157 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 5 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 20 transitions. Complement of second has 4 states. [2020-07-01 11:40:57,157 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 11:40:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:40:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 11:40:57,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:40:57,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:57,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:40:57,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:57,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:40:57,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:40:57,160 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 20 transitions. [2020-07-01 11:40:57,161 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:40:57,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2020-07-01 11:40:57,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:40:57,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:40:57,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:40:57,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:40:57,162 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:40:57,162 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:40:57,162 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:40:57,162 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:40:57,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:40:57,163 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:40:57,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:40:57,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:40:57 BasicIcfg [2020-07-01 11:40:57,169 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:40:57,173 INFO L168 Benchmark]: Toolchain (without parser) took 2672.44 ms. Allocated memory was 514.9 MB in the beginning and 588.8 MB in the end (delta: 73.9 MB). Free memory was 438.5 MB in the beginning and 471.5 MB in the end (delta: -33.0 MB). Peak memory consumption was 41.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,173 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:40:57,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.82 ms. Allocated memory was 514.9 MB in the beginning and 562.6 MB in the end (delta: 47.7 MB). Free memory was 437.8 MB in the beginning and 530.6 MB in the end (delta: -92.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.75 ms. Allocated memory is still 562.6 MB. Free memory was 530.6 MB in the beginning and 529.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,175 INFO L168 Benchmark]: Boogie Preprocessor took 19.55 ms. Allocated memory is still 562.6 MB. Free memory was 529.2 MB in the beginning and 527.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,176 INFO L168 Benchmark]: RCFGBuilder took 235.27 ms. Allocated memory is still 562.6 MB. Free memory was 527.8 MB in the beginning and 516.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,176 INFO L168 Benchmark]: BlockEncodingV2 took 76.48 ms. Allocated memory is still 562.6 MB. Free memory was 516.4 MB in the beginning and 511.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,177 INFO L168 Benchmark]: TraceAbstraction took 147.41 ms. Allocated memory is still 562.6 MB. Free memory was 511.0 MB in the beginning and 502.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,177 INFO L168 Benchmark]: BuchiAutomizer took 1856.94 ms. Allocated memory was 562.6 MB in the beginning and 588.8 MB in the end (delta: 26.2 MB). Free memory was 502.7 MB in the beginning and 471.5 MB in the end (delta: 31.2 MB). Peak memory consumption was 57.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:40:57,181 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 6 locations, 8 edges - StatisticsResult: Encoded RCFG 3 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 295.82 ms. Allocated memory was 514.9 MB in the beginning and 562.6 MB in the end (delta: 47.7 MB). Free memory was 437.8 MB in the beginning and 530.6 MB in the end (delta: -92.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.75 ms. Allocated memory is still 562.6 MB. Free memory was 530.6 MB in the beginning and 529.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.55 ms. Allocated memory is still 562.6 MB. Free memory was 529.2 MB in the beginning and 527.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 235.27 ms. Allocated memory is still 562.6 MB. Free memory was 527.8 MB in the beginning and 516.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 76.48 ms. Allocated memory is still 562.6 MB. Free memory was 516.4 MB in the beginning and 511.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.41 ms. Allocated memory is still 562.6 MB. Free memory was 511.0 MB in the beginning and 502.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1856.94 ms. Allocated memory was 562.6 MB in the beginning and 588.8 MB in the end (delta: 26.2 MB). Free memory was 502.7 MB in the beginning and 471.5 MB in the end (delta: 31.2 MB). Peak memory consumption was 57.4 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 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=3occurred 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 3 terminating modules (0 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 22 SDslu, 2 SDs, 0 SdLazy, 37 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:40:51.177 ----------------------------------------------- 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/sandbox2/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/sandbox2/tmp/BenchExec_run_mGfr69/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:40:57.817 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check