java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:44:35,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:44:35,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:44:35,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:44:35,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:44:35,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:44:35,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:44:35,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:44:35,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:44:35,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:44:35,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:44:35,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:44:35,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:44:35,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:44:35,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:44:35,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:44:35,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:44:35,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:44:35,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:44:35,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:44:35,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:44:35,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:44:35,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:44:35,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:44:35,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:44:35,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:44:35,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:44:35,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:44:35,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:44:35,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:44:35,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:44:35,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:44:35,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:44:35,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:44:35,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:44:35,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:44:35,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:44:35,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:44:35,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:44:35,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:44:35,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:44:35,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:44:35,748 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:44:35,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:44:35,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:44:35,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:44:35,752 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:44:35,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:44:35,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:44:35,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:44:35,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:44:35,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:44:35,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:44:35,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:44:35,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:44:35,755 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:44:35,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:44:35,755 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:44:35,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:44:35,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:44:35,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:44:35,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:44:35,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:44:35,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:44:35,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:44:35,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:44:35,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:44:35,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:44:35,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:44:35,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:44:35,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:44:36,047 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:44:36,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:44:36,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:44:36,073 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:44:36,073 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:44:36,074 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-13 19:44:36,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32da37957/ca7ada8b1f4c4a91b36a09ac5e836eb7/FLAG4e55a8007 [2019-10-13 19:44:36,779 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:44:36,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-13 19:44:36,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32da37957/ca7ada8b1f4c4a91b36a09ac5e836eb7/FLAG4e55a8007 [2019-10-13 19:44:37,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32da37957/ca7ada8b1f4c4a91b36a09ac5e836eb7 [2019-10-13 19:44:37,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:44:37,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:44:37,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:44:37,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:44:37,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:44:37,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c45cfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37, skipping insertion in model container [2019-10-13 19:44:37,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,045 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:44:37,114 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:44:37,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:44:37,665 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:44:37,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:44:37,859 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:44:37,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37 WrapperNode [2019-10-13 19:44:37,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:44:37,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:44:37,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:44:37,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:44:37,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... [2019-10-13 19:44:37,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:44:37,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:44:37,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:44:37,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:44:37,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:44:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:44:38,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:44:38,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:44:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:44:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:44:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:44:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:44:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:44:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:44:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:44:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:44:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:44:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:44:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:44:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:44:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:44:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:44:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:44:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:44:39,676 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:44:39,677 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:44:39,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:39 BoogieIcfgContainer [2019-10-13 19:44:39,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:44:39,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:44:39,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:44:39,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:44:39,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:44:37" (1/3) ... [2019-10-13 19:44:39,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7b8002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:39, skipping insertion in model container [2019-10-13 19:44:39,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:37" (2/3) ... [2019-10-13 19:44:39,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7b8002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:39, skipping insertion in model container [2019-10-13 19:44:39,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:39" (3/3) ... [2019-10-13 19:44:39,697 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-13 19:44:39,709 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:44:39,739 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:44:39,750 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:44:39,776 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:44:39,777 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:44:39,777 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:44:39,777 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:44:39,777 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:44:39,778 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:44:39,778 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:44:39,778 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:44:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-10-13 19:44:39,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 19:44:39,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:39,820 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:39,822 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:39,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1044558362, now seen corresponding path program 1 times [2019-10-13 19:44:39,833 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:39,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126401052] [2019-10-13 19:44:39,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:39,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:39,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:40,746 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:40,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126401052] [2019-10-13 19:44:40,849 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:40,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:44:40,850 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634789773] [2019-10-13 19:44:40,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:44:40,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:40,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:44:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:40,873 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-10-13 19:44:41,186 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-13 19:44:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:44:42,865 INFO L93 Difference]: Finished difference Result 619 states and 1077 transitions. [2019-10-13 19:44:42,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:44:42,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-13 19:44:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:44:42,892 INFO L225 Difference]: With dead ends: 619 [2019-10-13 19:44:42,892 INFO L226 Difference]: Without dead ends: 501 [2019-10-13 19:44:42,897 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:44:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2019-10-13 19:44:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2019-10-13 19:44:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-10-13 19:44:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 744 transitions. [2019-10-13 19:44:42,987 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 744 transitions. Word has length 144 [2019-10-13 19:44:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:44:42,988 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 744 transitions. [2019-10-13 19:44:42,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:44:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 744 transitions. [2019-10-13 19:44:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 19:44:42,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:42,994 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:42,994 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:42,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:42,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1418231549, now seen corresponding path program 1 times [2019-10-13 19:44:42,995 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:42,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289710188] [2019-10-13 19:44:42,995 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:42,996 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:42,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:43,384 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:43,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289710188] [2019-10-13 19:44:43,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:43,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:44:43,429 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397173284] [2019-10-13 19:44:43,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:44:43,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:44:43,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:43,432 INFO L87 Difference]: Start difference. First operand 499 states and 744 transitions. Second operand 4 states. [2019-10-13 19:44:43,692 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-13 19:44:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:44:44,951 INFO L93 Difference]: Finished difference Result 1063 states and 1629 transitions. [2019-10-13 19:44:44,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:44:44,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2019-10-13 19:44:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:44:44,958 INFO L225 Difference]: With dead ends: 1063 [2019-10-13 19:44:44,958 INFO L226 Difference]: Without dead ends: 871 [2019-10-13 19:44:44,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:44:44,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2019-10-13 19:44:45,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2019-10-13 19:44:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2019-10-13 19:44:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1306 transitions. [2019-10-13 19:44:45,013 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1306 transitions. Word has length 144 [2019-10-13 19:44:45,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:44:45,014 INFO L462 AbstractCegarLoop]: Abstraction has 869 states and 1306 transitions. [2019-10-13 19:44:45,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:44:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1306 transitions. [2019-10-13 19:44:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-13 19:44:45,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:45,020 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:45,020 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:45,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:45,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1681024797, now seen corresponding path program 1 times [2019-10-13 19:44:45,021 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:45,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114665954] [2019-10-13 19:44:45,022 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:45,022 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:45,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:45,735 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:45,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:45,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114665954] [2019-10-13 19:44:45,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:45,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:44:45,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809153147] [2019-10-13 19:44:45,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:44:45,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:45,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:44:45,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:44:45,822 INFO L87 Difference]: Start difference. First operand 869 states and 1306 transitions. Second operand 5 states. [2019-10-13 19:44:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:44:48,176 INFO L93 Difference]: Finished difference Result 2537 states and 3809 transitions. [2019-10-13 19:44:48,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:44:48,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-13 19:44:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:44:48,185 INFO L225 Difference]: With dead ends: 2537 [2019-10-13 19:44:48,186 INFO L226 Difference]: Without dead ends: 1681 [2019-10-13 19:44:48,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:44:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2019-10-13 19:44:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1679. [2019-10-13 19:44:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1679 states. [2019-10-13 19:44:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2501 transitions. [2019-10-13 19:44:48,272 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2501 transitions. Word has length 144 [2019-10-13 19:44:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:44:48,272 INFO L462 AbstractCegarLoop]: Abstraction has 1679 states and 2501 transitions. [2019-10-13 19:44:48,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:44:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2501 transitions. [2019-10-13 19:44:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 19:44:48,277 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:48,277 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:48,277 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:48,278 INFO L82 PathProgramCache]: Analyzing trace with hash 174303607, now seen corresponding path program 1 times [2019-10-13 19:44:48,278 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:48,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104160265] [2019-10-13 19:44:48,278 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:48,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:48,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:48,529 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:48,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104160265] [2019-10-13 19:44:48,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:48,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:44:48,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230706914] [2019-10-13 19:44:48,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:44:48,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:48,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:44:48,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:48,558 INFO L87 Difference]: Start difference. First operand 1679 states and 2501 transitions. Second operand 4 states. [2019-10-13 19:44:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:44:50,352 INFO L93 Difference]: Finished difference Result 4991 states and 7433 transitions. [2019-10-13 19:44:50,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:44:50,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-13 19:44:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:44:50,377 INFO L225 Difference]: With dead ends: 4991 [2019-10-13 19:44:50,377 INFO L226 Difference]: Without dead ends: 3344 [2019-10-13 19:44:50,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:50,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2019-10-13 19:44:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 1681. [2019-10-13 19:44:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2019-10-13 19:44:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2503 transitions. [2019-10-13 19:44:50,547 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2503 transitions. Word has length 145 [2019-10-13 19:44:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:44:50,547 INFO L462 AbstractCegarLoop]: Abstraction has 1681 states and 2503 transitions. [2019-10-13 19:44:50,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:44:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2503 transitions. [2019-10-13 19:44:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 19:44:50,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:50,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:50,554 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:50,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2086186532, now seen corresponding path program 1 times [2019-10-13 19:44:50,555 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:50,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286056777] [2019-10-13 19:44:50,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:50,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:50,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:51,015 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:51,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286056777] [2019-10-13 19:44:51,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:51,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:44:51,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710612271] [2019-10-13 19:44:51,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:44:51,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:51,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:44:51,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:44:51,058 INFO L87 Difference]: Start difference. First operand 1681 states and 2503 transitions. Second operand 5 states. [2019-10-13 19:44:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:44:53,309 INFO L93 Difference]: Finished difference Result 4891 states and 7269 transitions. [2019-10-13 19:44:53,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:44:53,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-10-13 19:44:53,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:44:53,326 INFO L225 Difference]: With dead ends: 4891 [2019-10-13 19:44:53,327 INFO L226 Difference]: Without dead ends: 3244 [2019-10-13 19:44:53,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:44:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2019-10-13 19:44:53,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 3242. [2019-10-13 19:44:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3242 states. [2019-10-13 19:44:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3242 states to 3242 states and 4778 transitions. [2019-10-13 19:44:53,481 INFO L78 Accepts]: Start accepts. Automaton has 3242 states and 4778 transitions. Word has length 146 [2019-10-13 19:44:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:44:53,481 INFO L462 AbstractCegarLoop]: Abstraction has 3242 states and 4778 transitions. [2019-10-13 19:44:53,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:44:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3242 states and 4778 transitions. [2019-10-13 19:44:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:44:53,486 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:53,487 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:53,487 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1572769304, now seen corresponding path program 1 times [2019-10-13 19:44:53,488 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:53,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970960855] [2019-10-13 19:44:53,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:53,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:53,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:53,738 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:53,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970960855] [2019-10-13 19:44:53,765 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:53,765 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:44:53,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030104775] [2019-10-13 19:44:53,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:44:53,799 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:53,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:44:53,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:53,800 INFO L87 Difference]: Start difference. First operand 3242 states and 4778 transitions. Second operand 4 states. [2019-10-13 19:44:56,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:44:56,289 INFO L93 Difference]: Finished difference Result 9642 states and 14206 transitions. [2019-10-13 19:44:56,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:44:56,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-10-13 19:44:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:44:56,320 INFO L225 Difference]: With dead ends: 9642 [2019-10-13 19:44:56,320 INFO L226 Difference]: Without dead ends: 6448 [2019-10-13 19:44:56,326 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:56,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2019-10-13 19:44:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 3246. [2019-10-13 19:44:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3246 states. [2019-10-13 19:44:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4782 transitions. [2019-10-13 19:44:56,512 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4782 transitions. Word has length 147 [2019-10-13 19:44:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:44:56,513 INFO L462 AbstractCegarLoop]: Abstraction has 3246 states and 4782 transitions. [2019-10-13 19:44:56,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:44:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4782 transitions. [2019-10-13 19:44:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:44:56,518 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:56,518 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:56,518 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:56,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1627489550, now seen corresponding path program 1 times [2019-10-13 19:44:56,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:56,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342390887] [2019-10-13 19:44:56,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:56,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:56,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:56,794 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:56,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342390887] [2019-10-13 19:44:56,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:56,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:44:56,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268746451] [2019-10-13 19:44:56,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:44:56,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:56,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:44:56,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:56,848 INFO L87 Difference]: Start difference. First operand 3246 states and 4782 transitions. Second operand 4 states. [2019-10-13 19:44:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:44:59,069 INFO L93 Difference]: Finished difference Result 9238 states and 13634 transitions. [2019-10-13 19:44:59,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:44:59,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-13 19:44:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:44:59,097 INFO L225 Difference]: With dead ends: 9238 [2019-10-13 19:44:59,097 INFO L226 Difference]: Without dead ends: 6276 [2019-10-13 19:44:59,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:44:59,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6276 states. [2019-10-13 19:44:59,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6276 to 6274. [2019-10-13 19:44:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2019-10-13 19:44:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 9152 transitions. [2019-10-13 19:44:59,460 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 9152 transitions. Word has length 148 [2019-10-13 19:44:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:44:59,461 INFO L462 AbstractCegarLoop]: Abstraction has 6274 states and 9152 transitions. [2019-10-13 19:44:59,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:44:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 9152 transitions. [2019-10-13 19:44:59,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:44:59,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:44:59,472 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:44:59,472 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:44:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:44:59,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1348812523, now seen corresponding path program 1 times [2019-10-13 19:44:59,473 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:44:59,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661197785] [2019-10-13 19:44:59,473 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:59,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:44:59,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:44:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:59,818 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:44:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:44:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:44:59,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661197785] [2019-10-13 19:44:59,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:44:59,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:44:59,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508509942] [2019-10-13 19:44:59,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:44:59,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:44:59,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:44:59,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:44:59,849 INFO L87 Difference]: Start difference. First operand 6274 states and 9152 transitions. Second operand 5 states. [2019-10-13 19:45:01,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:01,563 INFO L93 Difference]: Finished difference Result 12874 states and 18674 transitions. [2019-10-13 19:45:01,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:01,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 19:45:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:01,587 INFO L225 Difference]: With dead ends: 12874 [2019-10-13 19:45:01,588 INFO L226 Difference]: Without dead ends: 6484 [2019-10-13 19:45:01,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2019-10-13 19:45:01,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 6482. [2019-10-13 19:45:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6482 states. [2019-10-13 19:45:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 9322 transitions. [2019-10-13 19:45:01,893 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 9322 transitions. Word has length 148 [2019-10-13 19:45:01,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:01,894 INFO L462 AbstractCegarLoop]: Abstraction has 6482 states and 9322 transitions. [2019-10-13 19:45:01,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 9322 transitions. [2019-10-13 19:45:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:45:01,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:01,904 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:01,904 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:01,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:01,904 INFO L82 PathProgramCache]: Analyzing trace with hash -280340507, now seen corresponding path program 1 times [2019-10-13 19:45:01,905 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:01,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642403313] [2019-10-13 19:45:01,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:01,905 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:01,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:02,254 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:02,287 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642403313] [2019-10-13 19:45:02,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:02,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:02,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203833350] [2019-10-13 19:45:02,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:02,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:02,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:02,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:02,290 INFO L87 Difference]: Start difference. First operand 6482 states and 9322 transitions. Second operand 5 states. [2019-10-13 19:45:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:04,451 INFO L93 Difference]: Finished difference Result 9474 states and 13628 transitions. [2019-10-13 19:45:04,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:04,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 19:45:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:04,483 INFO L225 Difference]: With dead ends: 9474 [2019-10-13 19:45:04,483 INFO L226 Difference]: Without dead ends: 6484 [2019-10-13 19:45:04,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2019-10-13 19:45:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 6274. [2019-10-13 19:45:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6274 states. [2019-10-13 19:45:04,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6274 states to 6274 states and 9064 transitions. [2019-10-13 19:45:04,896 INFO L78 Accepts]: Start accepts. Automaton has 6274 states and 9064 transitions. Word has length 148 [2019-10-13 19:45:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:04,897 INFO L462 AbstractCegarLoop]: Abstraction has 6274 states and 9064 transitions. [2019-10-13 19:45:04,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6274 states and 9064 transitions. [2019-10-13 19:45:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 19:45:04,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:04,910 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:04,911 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:04,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1744361715, now seen corresponding path program 1 times [2019-10-13 19:45:04,911 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:04,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447506066] [2019-10-13 19:45:04,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:04,912 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:04,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:05,166 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:05,191 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447506066] [2019-10-13 19:45:05,191 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:05,192 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:05,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477843468] [2019-10-13 19:45:05,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:05,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:05,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:05,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:05,194 INFO L87 Difference]: Start difference. First operand 6274 states and 9064 transitions. Second operand 4 states. [2019-10-13 19:45:06,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:06,889 INFO L93 Difference]: Finished difference Result 15430 states and 22278 transitions. [2019-10-13 19:45:06,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:06,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-13 19:45:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:06,916 INFO L225 Difference]: With dead ends: 15430 [2019-10-13 19:45:06,916 INFO L226 Difference]: Without dead ends: 12440 [2019-10-13 19:45:06,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12440 states. [2019-10-13 19:45:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12440 to 6282. [2019-10-13 19:45:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6282 states. [2019-10-13 19:45:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 9072 transitions. [2019-10-13 19:45:07,307 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 9072 transitions. Word has length 149 [2019-10-13 19:45:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:07,307 INFO L462 AbstractCegarLoop]: Abstraction has 6282 states and 9072 transitions. [2019-10-13 19:45:07,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 9072 transitions. [2019-10-13 19:45:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:45:07,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:07,318 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:07,318 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:07,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1112337492, now seen corresponding path program 1 times [2019-10-13 19:45:07,319 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:07,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765606411] [2019-10-13 19:45:07,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:07,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:07,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:07,636 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:07,672 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765606411] [2019-10-13 19:45:07,672 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:07,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:07,673 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203827133] [2019-10-13 19:45:07,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:07,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:07,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:07,674 INFO L87 Difference]: Start difference. First operand 6282 states and 9072 transitions. Second operand 5 states. [2019-10-13 19:45:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:10,088 INFO L93 Difference]: Finished difference Result 18328 states and 26397 transitions. [2019-10-13 19:45:10,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:10,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 19:45:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:10,112 INFO L225 Difference]: With dead ends: 18328 [2019-10-13 19:45:10,112 INFO L226 Difference]: Without dead ends: 12093 [2019-10-13 19:45:10,125 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12093 states. [2019-10-13 19:45:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12093 to 12091. [2019-10-13 19:45:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12091 states. [2019-10-13 19:45:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12091 states to 12091 states and 17220 transitions. [2019-10-13 19:45:10,921 INFO L78 Accepts]: Start accepts. Automaton has 12091 states and 17220 transitions. Word has length 150 [2019-10-13 19:45:10,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:10,922 INFO L462 AbstractCegarLoop]: Abstraction has 12091 states and 17220 transitions. [2019-10-13 19:45:10,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12091 states and 17220 transitions. [2019-10-13 19:45:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:45:10,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:10,936 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:10,936 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:10,936 INFO L82 PathProgramCache]: Analyzing trace with hash 934663718, now seen corresponding path program 1 times [2019-10-13 19:45:10,937 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:10,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902322437] [2019-10-13 19:45:10,937 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:10,937 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:10,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 19:45:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 19:45:11,207 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-13 19:45:11,207 INFO L445 BasicCegarLoop]: Counterexample might be feasible