/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:42:13,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:42:13,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:42:13,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:42:13,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:42:13,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:42:13,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:42:13,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:42:13,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:42:13,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:42:13,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:42:13,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:42:13,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:42:13,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:42:13,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:42:13,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:42:13,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:42:13,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:42:13,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:42:13,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:42:13,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:42:13,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:42:13,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:42:13,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:42:13,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:42:13,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:42:13,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:42:13,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:42:13,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:42:13,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:42:13,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:42:13,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:42:13,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:42:13,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:42:13,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:42:13,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:42:13,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:42:13,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:42:13,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:42:13,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:42:13,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:42:13,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:42:13,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:42:13,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:42:13,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:42:13,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:42:13,731 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:42:13,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:42:13,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:42:13,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:42:13,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:42:13,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:42:13,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:42:13,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:42:13,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:42:13,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:42:13,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:42:13,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:42:13,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:42:13,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:42:13,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:42:13,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:42:13,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:42:13,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:42:13,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:42:13,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:42:13,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:42:13,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:42:13,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:42:13,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:42:13,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:42:13,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:42:14,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:42:14,248 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:42:14,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:42:14,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:42:14,256 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:42:14,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-24 22:42:14,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69d2e51c/8c7784a8a0654633b56315f401c229f9/FLAG865abb676 [2020-09-24 22:42:14,854 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:42:14,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-24 22:42:14,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69d2e51c/8c7784a8a0654633b56315f401c229f9/FLAG865abb676 [2020-09-24 22:42:15,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69d2e51c/8c7784a8a0654633b56315f401c229f9 [2020-09-24 22:42:15,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:42:15,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:42:15,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:15,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:42:15,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:42:15,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe0b327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15, skipping insertion in model container [2020-09-24 22:42:15,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:42:15,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:42:15,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:15,642 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:42:15,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:15,849 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:42:15,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15 WrapperNode [2020-09-24 22:42:15,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:15,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:42:15,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:42:15,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:42:15,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... [2020-09-24 22:42:15,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:42:15,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:42:15,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:42:15,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:42:15,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 22:42:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:42:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:42:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-24 22:42:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-24 22:42:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-24 22:42:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:42:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-24 22:42:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-24 22:42:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-24 22:42:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-24 22:42:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-24 22:42:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-24 22:42:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-09-24 22:42:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-09-24 22:42:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-09-24 22:42:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-09-24 22:42:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-09-24 22:42:16,019 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-24 22:42:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:42:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 22:42:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:42:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-24 22:42:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-24 22:42:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-24 22:42:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-24 22:42:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-24 22:42:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-24 22:42:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-09-24 22:42:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-09-24 22:42:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-09-24 22:42:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-09-24 22:42:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-09-24 22:42:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-24 22:42:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-24 22:42:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-24 22:42:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-24 22:42:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:42:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-24 22:42:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:42:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:42:16,330 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 22:42:16,417 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-24 22:42:16,418 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-24 22:42:16,454 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 22:42:16,623 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-09-24 22:42:16,623 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-09-24 22:42:16,625 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 22:42:16,677 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 22:42:16,677 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 22:42:16,686 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 22:42:16,745 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-24 22:42:16,746 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-24 22:42:16,966 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 22:42:16,996 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-24 22:42:16,997 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-24 22:42:17,056 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-24 22:42:17,209 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-24 22:42:17,209 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-24 22:42:17,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:42:17,235 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:42:17,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:17 BoogieIcfgContainer [2020-09-24 22:42:17,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:42:17,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:42:17,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:42:17,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:42:17,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:42:15" (1/3) ... [2020-09-24 22:42:17,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508ea2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:17, skipping insertion in model container [2020-09-24 22:42:17,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:15" (2/3) ... [2020-09-24 22:42:17,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508ea2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:17, skipping insertion in model container [2020-09-24 22:42:17,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:17" (3/3) ... [2020-09-24 22:42:17,265 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-09-24 22:42:17,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:42:17,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:42:17,304 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:42:17,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:42:17,338 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:42:17,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:42:17,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:42:17,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:42:17,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:42:17,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:42:17,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:42:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states. [2020-09-24 22:42:17,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 22:42:17,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:17,384 INFO L422 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] [2020-09-24 22:42:17,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:17,391 INFO L82 PathProgramCache]: Analyzing trace with hash 738723625, now seen corresponding path program 1 times [2020-09-24 22:42:17,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:17,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719351368] [2020-09-24 22:42:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:19,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:19,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 22:42:19,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:42:19,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1518 [2020-09-24 22:42:19,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:19,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-24 22:42:19,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:42:19,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 22:42:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:19,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:19,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:19,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:42:19,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:19,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:19,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:19,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:19,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:19,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:42:19,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:42:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:19,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719351368] [2020-09-24 22:42:19,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:19,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:42:19,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055621624] [2020-09-24 22:42:19,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:42:19,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:19,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:42:19,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:42:19,464 INFO L87 Difference]: Start difference. First operand 667 states. Second operand 5 states. [2020-09-24 22:42:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:20,966 INFO L93 Difference]: Finished difference Result 1028 states and 1235 transitions. [2020-09-24 22:42:20,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:42:20,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-24 22:42:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:20,994 INFO L225 Difference]: With dead ends: 1028 [2020-09-24 22:42:20,994 INFO L226 Difference]: Without dead ends: 705 [2020-09-24 22:42:21,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:42:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-24 22:42:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 651. [2020-09-24 22:42:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-09-24 22:42:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 744 transitions. [2020-09-24 22:42:21,140 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 744 transitions. Word has length 85 [2020-09-24 22:42:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:21,141 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 744 transitions. [2020-09-24 22:42:21,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:42:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 744 transitions. [2020-09-24 22:42:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 22:42:21,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:21,145 INFO L422 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] [2020-09-24 22:42:21,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:42:21,145 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1433653625, now seen corresponding path program 1 times [2020-09-24 22:42:21,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921907997] [2020-09-24 22:42:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:22,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 22:42:22,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:42:22,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 22:42:22,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-24 22:42:22,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:42:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:22,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:22,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:22,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:22,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:22,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:22,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:22,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:22,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 22:42:22,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:22,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:22,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:42:22,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:22,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921907997] [2020-09-24 22:42:22,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:22,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:42:22,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931210515] [2020-09-24 22:42:22,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:42:22,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:22,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:42:22,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:42:22,449 INFO L87 Difference]: Start difference. First operand 651 states and 744 transitions. Second operand 5 states. [2020-09-24 22:42:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:24,021 INFO L93 Difference]: Finished difference Result 718 states and 825 transitions. [2020-09-24 22:42:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:42:24,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-09-24 22:42:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:24,032 INFO L225 Difference]: With dead ends: 718 [2020-09-24 22:42:24,032 INFO L226 Difference]: Without dead ends: 705 [2020-09-24 22:42:24,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:42:24,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-24 22:42:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 651. [2020-09-24 22:42:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-09-24 22:42:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 743 transitions. [2020-09-24 22:42:24,095 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 743 transitions. Word has length 86 [2020-09-24 22:42:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:24,098 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 743 transitions. [2020-09-24 22:42:24,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:42:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 743 transitions. [2020-09-24 22:42:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 22:42:24,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:24,112 INFO L422 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] [2020-09-24 22:42:24,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:42:24,112 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:24,113 INFO L82 PathProgramCache]: Analyzing trace with hash -242240865, now seen corresponding path program 1 times [2020-09-24 22:42:24,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:24,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382120017] [2020-09-24 22:42:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-24 22:42:24,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-24 22:42:24,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:42:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-24 22:42:24,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:42:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:24,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:24,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:24,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:42:24,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:24,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:24,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 22:42:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:24,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:24,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:24,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 22:42:24,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:25,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382120017] [2020-09-24 22:42:25,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:25,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:42:25,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913538459] [2020-09-24 22:42:25,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:42:25,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:25,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:42:25,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:42:25,049 INFO L87 Difference]: Start difference. First operand 651 states and 743 transitions. Second operand 6 states. [2020-09-24 22:42:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:27,205 INFO L93 Difference]: Finished difference Result 964 states and 1110 transitions. [2020-09-24 22:42:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:42:27,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-24 22:42:27,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:27,214 INFO L225 Difference]: With dead ends: 964 [2020-09-24 22:42:27,215 INFO L226 Difference]: Without dead ends: 878 [2020-09-24 22:42:27,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:42:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-09-24 22:42:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 747. [2020-09-24 22:42:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-09-24 22:42:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 853 transitions. [2020-09-24 22:42:27,257 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 853 transitions. Word has length 136 [2020-09-24 22:42:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:27,257 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 853 transitions. [2020-09-24 22:42:27,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:42:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 853 transitions. [2020-09-24 22:42:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 22:42:27,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:27,260 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:27,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:42:27,261 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:27,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:27,261 INFO L82 PathProgramCache]: Analyzing trace with hash 864276638, now seen corresponding path program 1 times [2020-09-24 22:42:27,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:27,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084859341] [2020-09-24 22:42:27,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:27,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 22:42:27,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-24 22:42:27,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-24 22:42:27,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 22:42:27,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:27,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:27,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:27,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:27,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:27,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:27,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:27,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:27,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:27,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:27,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:27,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:27,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:42:27,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:27,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 22:42:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:27,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:27,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:27,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:27,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:27,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:27,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:42:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:27,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084859341] [2020-09-24 22:42:27,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:27,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:42:27,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142907464] [2020-09-24 22:42:27,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:42:27,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:27,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:42:27,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:42:27,893 INFO L87 Difference]: Start difference. First operand 747 states and 853 transitions. Second operand 6 states. [2020-09-24 22:42:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:29,484 INFO L93 Difference]: Finished difference Result 1011 states and 1158 transitions. [2020-09-24 22:42:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:42:29,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-24 22:42:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:29,495 INFO L225 Difference]: With dead ends: 1011 [2020-09-24 22:42:29,495 INFO L226 Difference]: Without dead ends: 844 [2020-09-24 22:42:29,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:42:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-24 22:42:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 822. [2020-09-24 22:42:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-09-24 22:42:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 939 transitions. [2020-09-24 22:42:29,548 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 939 transitions. Word has length 158 [2020-09-24 22:42:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:29,550 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 939 transitions. [2020-09-24 22:42:29,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:42:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 939 transitions. [2020-09-24 22:42:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 22:42:29,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:29,555 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:29,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:42:29,555 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 153469469, now seen corresponding path program 1 times [2020-09-24 22:42:29,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:29,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773689305] [2020-09-24 22:42:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:29,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 22:42:29,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-24 22:42:29,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-09-24 22:42:29,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:42:29,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:30,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:30,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:30,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:30,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:30,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:30,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:30,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:30,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:42:30,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:30,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 22:42:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:30,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:30,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:30,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:30,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:30,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:30,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:30,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:30,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:30,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:30,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773689305] [2020-09-24 22:42:30,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:30,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:42:30,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280241660] [2020-09-24 22:42:30,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:42:30,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:30,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:42:30,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:42:30,197 INFO L87 Difference]: Start difference. First operand 822 states and 939 transitions. Second operand 6 states. [2020-09-24 22:42:32,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:32,086 INFO L93 Difference]: Finished difference Result 826 states and 942 transitions. [2020-09-24 22:42:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:42:32,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-24 22:42:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:32,093 INFO L225 Difference]: With dead ends: 826 [2020-09-24 22:42:32,093 INFO L226 Difference]: Without dead ends: 822 [2020-09-24 22:42:32,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:42:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-09-24 22:42:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 821. [2020-09-24 22:42:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-09-24 22:42:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 936 transitions. [2020-09-24 22:42:32,128 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 936 transitions. Word has length 162 [2020-09-24 22:42:32,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:32,129 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 936 transitions. [2020-09-24 22:42:32,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:42:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 936 transitions. [2020-09-24 22:42:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 22:42:32,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:32,133 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:32,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:42:32,134 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:32,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:32,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1857862353, now seen corresponding path program 1 times [2020-09-24 22:42:32,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:32,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978015391] [2020-09-24 22:42:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:32,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:33,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 22:42:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 22:42:37,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:42:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-09-24 22:42:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 22:42:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:37,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:37,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:37,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:37,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:37,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:42:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:37,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 22:42:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:37,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:37,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:37,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:37,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:37,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-24 22:42:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:37,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:37,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 22:42:37,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 22:42:37,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:42:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 22:42:37,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 22:42:37,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:37,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 22:42:37,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:42:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 22:42:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:42:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:37,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:37,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:37,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:37,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 22:42:37,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:37,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:42:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:37,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978015391] [2020-09-24 22:42:37,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:37,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 22:42:37,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487847959] [2020-09-24 22:42:37,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:42:37,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:37,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:42:37,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:42:37,983 INFO L87 Difference]: Start difference. First operand 821 states and 936 transitions. Second operand 17 states. [2020-09-24 22:42:42,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:42,109 INFO L93 Difference]: Finished difference Result 834 states and 950 transitions. [2020-09-24 22:42:42,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:42:42,110 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2020-09-24 22:42:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:42,116 INFO L225 Difference]: With dead ends: 834 [2020-09-24 22:42:42,117 INFO L226 Difference]: Without dead ends: 817 [2020-09-24 22:42:42,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:42:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-09-24 22:42:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2020-09-24 22:42:42,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-09-24 22:42:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 930 transitions. [2020-09-24 22:42:42,199 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 930 transitions. Word has length 193 [2020-09-24 22:42:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:42,200 INFO L479 AbstractCegarLoop]: Abstraction has 817 states and 930 transitions. [2020-09-24 22:42:42,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:42:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 930 transitions. [2020-09-24 22:42:42,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 22:42:42,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:42,204 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:42,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:42:42,205 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:42,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1624237255, now seen corresponding path program 1 times [2020-09-24 22:42:42,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:42,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537543828] [2020-09-24 22:42:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:42,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:42,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:43,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:47,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:47,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 22:42:47,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 22:42:47,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:42:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-24 22:42:47,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 22:42:47,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:47,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:47,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:47,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:47,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:47,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:47,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:47,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:47,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:47,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:47,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:42:47,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 22:42:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:47,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:47,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:47,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:47,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:47,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:47,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 22:42:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 22:42:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 22:42:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:42:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 22:42:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:47,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:47,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 22:42:47,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 22:42:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:42:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:47,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 22:42:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:42:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:48,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:48,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:48,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 22:42:48,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:42:48,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:48,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537543828] [2020-09-24 22:42:48,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:48,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-24 22:42:48,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898062862] [2020-09-24 22:42:48,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 22:42:48,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:48,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 22:42:48,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:42:48,095 INFO L87 Difference]: Start difference. First operand 817 states and 930 transitions. Second operand 17 states. [2020-09-24 22:42:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:51,722 INFO L93 Difference]: Finished difference Result 830 states and 944 transitions. [2020-09-24 22:42:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:42:51,722 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 188 [2020-09-24 22:42:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:51,728 INFO L225 Difference]: With dead ends: 830 [2020-09-24 22:42:51,729 INFO L226 Difference]: Without dead ends: 787 [2020-09-24 22:42:51,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:42:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-24 22:42:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2020-09-24 22:42:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2020-09-24 22:42:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 895 transitions. [2020-09-24 22:42:51,771 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 895 transitions. Word has length 188 [2020-09-24 22:42:51,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:51,771 INFO L479 AbstractCegarLoop]: Abstraction has 787 states and 895 transitions. [2020-09-24 22:42:51,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 22:42:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 895 transitions. [2020-09-24 22:42:51,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-24 22:42:51,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:51,775 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:51,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:42:51,775 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:51,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:51,776 INFO L82 PathProgramCache]: Analyzing trace with hash 253205505, now seen corresponding path program 1 times [2020-09-24 22:42:51,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:51,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246676676] [2020-09-24 22:42:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:56,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:56,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-24 22:42:56,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:56,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 22:42:56,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:42:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-24 22:42:56,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:42:56,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:56,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:56,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:56,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:42:56,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:56,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:56,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:56,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:56,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:56,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:42:56,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:56,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:42:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:57,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 22:42:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:57,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:57,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:42:57,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:57,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:42:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:57,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 22:42:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:57,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:42:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 22:42:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:42:57,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 22:42:57,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 22:42:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:57,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:57,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 22:42:57,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:57,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:42:57,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:57,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:42:57,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:57,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246676676] [2020-09-24 22:42:57,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:57,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 22:42:57,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671423894] [2020-09-24 22:42:57,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:42:57,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:42:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:42:57,295 INFO L87 Difference]: Start difference. First operand 787 states and 895 transitions. Second operand 13 states. [2020-09-24 22:43:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:00,704 INFO L93 Difference]: Finished difference Result 800 states and 909 transitions. [2020-09-24 22:43:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:43:00,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 191 [2020-09-24 22:43:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:00,711 INFO L225 Difference]: With dead ends: 800 [2020-09-24 22:43:00,712 INFO L226 Difference]: Without dead ends: 701 [2020-09-24 22:43:00,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:43:00,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-09-24 22:43:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2020-09-24 22:43:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-09-24 22:43:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 798 transitions. [2020-09-24 22:43:00,742 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 798 transitions. Word has length 191 [2020-09-24 22:43:00,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:00,743 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 798 transitions. [2020-09-24 22:43:00,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:43:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 798 transitions. [2020-09-24 22:43:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-24 22:43:00,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:00,747 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:00,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:43:00,747 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:00,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:00,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1742770590, now seen corresponding path program 1 times [2020-09-24 22:43:00,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:00,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345115009] [2020-09-24 22:43:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:01,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:01,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-24 22:43:01,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:43:01,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 743 [2020-09-24 22:43:01,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:43:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-24 22:43:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:43:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-09-24 22:43:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:43:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:01,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:01,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:43:01,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:43:01,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:01,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:43:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:01,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:01,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 22:43:01,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:01,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:43:01,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:01,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:01,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:01,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:01,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-24 22:43:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:01,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:01,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:43:01,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:43:01,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:43:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:43:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 22:43:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:01,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:43:01,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 22:43:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:43:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:43:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:43:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:43:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:43:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:43:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:43:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:43:01,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345115009] [2020-09-24 22:43:01,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:43:01,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:43:01,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586601254] [2020-09-24 22:43:01,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:43:01,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:43:01,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:43:01,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:43:01,812 INFO L87 Difference]: Start difference. First operand 701 states and 798 transitions. Second operand 10 states. [2020-09-24 22:43:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:43:03,709 INFO L93 Difference]: Finished difference Result 941 states and 1092 transitions. [2020-09-24 22:43:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:43:03,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 197 [2020-09-24 22:43:03,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:43:03,714 INFO L225 Difference]: With dead ends: 941 [2020-09-24 22:43:03,714 INFO L226 Difference]: Without dead ends: 801 [2020-09-24 22:43:03,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:43:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-24 22:43:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 760. [2020-09-24 22:43:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-09-24 22:43:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 875 transitions. [2020-09-24 22:43:03,746 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 875 transitions. Word has length 197 [2020-09-24 22:43:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:43:03,746 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 875 transitions. [2020-09-24 22:43:03,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:43:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 875 transitions. [2020-09-24 22:43:03,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 22:43:03,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:43:03,750 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:43:03,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:43:03,751 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:43:03,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:43:03,751 INFO L82 PathProgramCache]: Analyzing trace with hash -199553591, now seen corresponding path program 1 times [2020-09-24 22:43:03,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:43:03,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106433828] [2020-09-24 22:43:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:43:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:43:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:43:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking...