/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:58:47,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:58:47,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:58:47,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:58:47,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:58:47,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:58:47,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:58:47,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:58:47,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:58:47,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:58:47,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:58:47,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:58:47,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:58:47,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:58:47,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:58:47,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:58:47,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:58:47,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:58:47,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:58:47,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:58:47,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:58:47,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:58:47,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:58:47,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:58:47,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:58:47,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:58:47,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:58:47,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:58:47,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:58:47,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:58:47,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:58:47,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:58:47,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:58:47,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:58:47,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:58:47,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:58:47,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:58:47,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:58:47,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:58:47,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:58:47,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:58:47,906 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 [2020-10-13 13:58:47,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:58:47,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:58:47,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:58:47,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:58:47,930 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:58:47,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:58:47,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:58:47,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:58:47,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:58:47,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:58:47,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:58:47,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:58:47,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:58:47,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:58:47,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:58:47,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:58:47,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:58:47,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:58:47,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:58:47,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:58:47,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:58:47,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:58:47,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:58:47,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:58:47,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:58:47,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:58:47,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:58:47,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:58:47,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:58:47,935 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:58:48,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:58:48,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:58:48,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:58:48,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:58:48,257 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:58:48,258 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 13:58:48,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40a40194b/e5ab72ba487648c1bb9e74418c6b3e38/FLAG1569a59fa [2020-10-13 13:58:48,841 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:58:48,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 13:58:48,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40a40194b/e5ab72ba487648c1bb9e74418c6b3e38/FLAG1569a59fa [2020-10-13 13:58:49,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40a40194b/e5ab72ba487648c1bb9e74418c6b3e38 [2020-10-13 13:58:49,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:58:49,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:58:49,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:58:49,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:58:49,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:58:49,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74dd964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49, skipping insertion in model container [2020-10-13 13:58:49,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:58:49,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:58:49,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:58:49,609 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:58:49,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:58:49,885 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:58:49,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49 WrapperNode [2020-10-13 13:58:49,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:58:49,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:58:49,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:58:49,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:58:49,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:49,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (1/1) ... [2020-10-13 13:58:50,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:58:50,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:58:50,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:58:50,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:58:50,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (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 [2020-10-13 13:58:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:58:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:58:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:58:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:58:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:58:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:58:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:58:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:58:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:58:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:58:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:58:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:58:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:58:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:58:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:58:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:58:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:58:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:58:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:58:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:58:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:58:51,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:58:51,742 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:58:51,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:58:51 BoogieIcfgContainer [2020-10-13 13:58:51,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:58:51,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:58:51,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:58:51,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:58:51,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:58:49" (1/3) ... [2020-10-13 13:58:51,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aee3647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:58:51, skipping insertion in model container [2020-10-13 13:58:51,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:58:49" (2/3) ... [2020-10-13 13:58:51,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aee3647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:58:51, skipping insertion in model container [2020-10-13 13:58:51,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:58:51" (3/3) ... [2020-10-13 13:58:51,759 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-13 13:58:51,770 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:58:51,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:58:51,794 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:58:51,823 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:58:51,823 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:58:51,823 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:58:51,824 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:58:51,824 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:58:51,824 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:58:51,824 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:58:51,824 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:58:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states. [2020-10-13 13:58:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 13:58:51,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:51,869 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] [2020-10-13 13:58:51,869 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:51,876 INFO L82 PathProgramCache]: Analyzing trace with hash 564017095, now seen corresponding path program 1 times [2020-10-13 13:58:51,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:51,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984595123] [2020-10-13 13:58:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:52,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:53,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:57,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:57,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:58:57,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:58:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-13 13:58:57,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:58:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:58:57,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:58:57,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:58:58,430 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:58:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:58,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:58:58,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:58:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:58,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984595123] [2020-10-13 13:58:58,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:58,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:58:58,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816451721] [2020-10-13 13:58:58,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:58:58,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:58,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:58:58,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:58,548 INFO L87 Difference]: Start difference. First operand 324 states. Second operand 7 states. [2020-10-13 13:58:59,380 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2020-10-13 13:59:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:02,464 INFO L93 Difference]: Finished difference Result 1372 states and 2345 transitions. [2020-10-13 13:59:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:59:02,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-13 13:59:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:02,501 INFO L225 Difference]: With dead ends: 1372 [2020-10-13 13:59:02,502 INFO L226 Difference]: Without dead ends: 1209 [2020-10-13 13:59:02,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:59:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-13 13:59:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 445. [2020-10-13 13:59:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-13 13:59:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 742 transitions. [2020-10-13 13:59:02,644 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 742 transitions. Word has length 115 [2020-10-13 13:59:02,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:02,645 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 742 transitions. [2020-10-13 13:59:02,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:59:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 742 transitions. [2020-10-13 13:59:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 13:59:02,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:02,659 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] [2020-10-13 13:59:02,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:59:02,660 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:02,661 INFO L82 PathProgramCache]: Analyzing trace with hash 238492466, now seen corresponding path program 1 times [2020-10-13 13:59:02,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:02,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980036857] [2020-10-13 13:59:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:07,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:07,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:59:07,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:59:07,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:59:07,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:59:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 13:59:07,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:59:07,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:59:08,402 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:08,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:08,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:08,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:59:08,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:08,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980036857] [2020-10-13 13:59:08,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:08,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:59:08,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592268239] [2020-10-13 13:59:08,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:59:08,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:08,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:59:08,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:59:08,519 INFO L87 Difference]: Start difference. First operand 445 states and 742 transitions. Second operand 8 states. [2020-10-13 13:59:08,998 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 260 [2020-10-13 13:59:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:12,358 INFO L93 Difference]: Finished difference Result 3103 states and 5237 transitions. [2020-10-13 13:59:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:59:12,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-13 13:59:12,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:12,376 INFO L225 Difference]: With dead ends: 3103 [2020-10-13 13:59:12,377 INFO L226 Difference]: Without dead ends: 2851 [2020-10-13 13:59:12,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:59:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2020-10-13 13:59:12,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1123. [2020-10-13 13:59:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-10-13 13:59:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1891 transitions. [2020-10-13 13:59:12,488 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1891 transitions. Word has length 116 [2020-10-13 13:59:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:12,491 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1891 transitions. [2020-10-13 13:59:12,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:59:12,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1891 transitions. [2020-10-13 13:59:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:59:12,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:12,500 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] [2020-10-13 13:59:12,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:59:12,501 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:12,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:12,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1258278418, now seen corresponding path program 1 times [2020-10-13 13:59:12,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:12,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759391700] [2020-10-13 13:59:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:12,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:13,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:17,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:17,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:59:17,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:59:17,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 13:59:17,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-13 13:59:17,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:59:17,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:18,133 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:18,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:18,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:18,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:18,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:59:18,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:18,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:59:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:18,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759391700] [2020-10-13 13:59:18,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:18,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:18,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988731978] [2020-10-13 13:59:18,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:18,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:18,252 INFO L87 Difference]: Start difference. First operand 1123 states and 1891 transitions. Second operand 5 states. [2020-10-13 13:59:18,831 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:59:20,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:20,829 INFO L93 Difference]: Finished difference Result 3680 states and 6225 transitions. [2020-10-13 13:59:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:59:20,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 13:59:20,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:20,847 INFO L225 Difference]: With dead ends: 3680 [2020-10-13 13:59:20,848 INFO L226 Difference]: Without dead ends: 2840 [2020-10-13 13:59:20,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:59:20,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-10-13 13:59:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1991. [2020-10-13 13:59:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-10-13 13:59:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 3360 transitions. [2020-10-13 13:59:21,019 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 3360 transitions. Word has length 117 [2020-10-13 13:59:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:21,021 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 3360 transitions. [2020-10-13 13:59:21,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 3360 transitions. [2020-10-13 13:59:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 13:59:21,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:21,024 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] [2020-10-13 13:59:21,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:59:21,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:21,025 INFO L82 PathProgramCache]: Analyzing trace with hash -408977543, now seen corresponding path program 1 times [2020-10-13 13:59:21,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:21,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818119532] [2020-10-13 13:59:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:21,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:22,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:26,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:59:26,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:59:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:59:26,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-13 13:59:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:59:26,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:26,544 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:26,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:26,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:26,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:26,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:26,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:59:26,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:26,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:26,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:59:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:26,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818119532] [2020-10-13 13:59:26,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:26,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:26,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176218861] [2020-10-13 13:59:26,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:26,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:26,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:26,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:26,634 INFO L87 Difference]: Start difference. First operand 1991 states and 3360 transitions. Second operand 5 states. [2020-10-13 13:59:27,190 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:59:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:29,633 INFO L93 Difference]: Finished difference Result 7024 states and 11879 transitions. [2020-10-13 13:59:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:59:29,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 13:59:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:29,663 INFO L225 Difference]: With dead ends: 7024 [2020-10-13 13:59:29,663 INFO L226 Difference]: Without dead ends: 5353 [2020-10-13 13:59:29,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:59:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2020-10-13 13:59:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3666. [2020-10-13 13:59:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3666 states. [2020-10-13 13:59:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6188 transitions. [2020-10-13 13:59:29,963 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6188 transitions. Word has length 118 [2020-10-13 13:59:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:29,964 INFO L479 AbstractCegarLoop]: Abstraction has 3666 states and 6188 transitions. [2020-10-13 13:59:29,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:29,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6188 transitions. [2020-10-13 13:59:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:59:29,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:29,967 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] [2020-10-13 13:59:29,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:59:29,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:29,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1170707965, now seen corresponding path program 1 times [2020-10-13 13:59:29,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:29,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109668788] [2020-10-13 13:59:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:30,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:33,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:33,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:33,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:35,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:35,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:59:35,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:59:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:59:35,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:59:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 13:59:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:59:35,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:35,411 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:35,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:35,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:35,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:35,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:59:35,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:35,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:35,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:35,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109668788] [2020-10-13 13:59:35,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:35,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:59:35,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547544674] [2020-10-13 13:59:35,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:59:35,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:35,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:59:35,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:35,463 INFO L87 Difference]: Start difference. First operand 3666 states and 6188 transitions. Second operand 4 states. [2020-10-13 13:59:35,868 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:59:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:38,070 INFO L93 Difference]: Finished difference Result 9622 states and 16254 transitions. [2020-10-13 13:59:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:38,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 13:59:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:38,105 INFO L225 Difference]: With dead ends: 9622 [2020-10-13 13:59:38,105 INFO L226 Difference]: Without dead ends: 6240 [2020-10-13 13:59:38,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2020-10-13 13:59:38,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 6238. [2020-10-13 13:59:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6238 states. [2020-10-13 13:59:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 10498 transitions. [2020-10-13 13:59:38,585 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 10498 transitions. Word has length 119 [2020-10-13 13:59:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:38,585 INFO L479 AbstractCegarLoop]: Abstraction has 6238 states and 10498 transitions. [2020-10-13 13:59:38,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 10498 transitions. [2020-10-13 13:59:38,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:59:38,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:38,589 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] [2020-10-13 13:59:38,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:59:38,590 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:38,590 INFO L82 PathProgramCache]: Analyzing trace with hash 154103829, now seen corresponding path program 1 times [2020-10-13 13:59:38,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:38,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686383096] [2020-10-13 13:59:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:39,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:39,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:43,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:59:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:59:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:59:43,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-13 13:59:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:59:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:44,169 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:44,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:44,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:44,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:59:44,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:44,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:59:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:44,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686383096] [2020-10-13 13:59:44,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:44,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:44,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610662575] [2020-10-13 13:59:44,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:44,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:44,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:44,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:44,255 INFO L87 Difference]: Start difference. First operand 6238 states and 10498 transitions. Second operand 5 states. [2020-10-13 13:59:44,657 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:59:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:47,050 INFO L93 Difference]: Finished difference Result 24046 states and 40501 transitions. [2020-10-13 13:59:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:59:47,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-13 13:59:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:47,114 INFO L225 Difference]: With dead ends: 24046 [2020-10-13 13:59:47,114 INFO L226 Difference]: Without dead ends: 18110 [2020-10-13 13:59:47,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:59:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18110 states. [2020-10-13 13:59:47,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18110 to 12116. [2020-10-13 13:59:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12116 states. [2020-10-13 13:59:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12116 states to 12116 states and 20354 transitions. [2020-10-13 13:59:47,914 INFO L78 Accepts]: Start accepts. Automaton has 12116 states and 20354 transitions. Word has length 119 [2020-10-13 13:59:47,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:47,914 INFO L479 AbstractCegarLoop]: Abstraction has 12116 states and 20354 transitions. [2020-10-13 13:59:47,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12116 states and 20354 transitions. [2020-10-13 13:59:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:59:47,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:47,917 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] [2020-10-13 13:59:47,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:59:47,917 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:47,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507399, now seen corresponding path program 1 times [2020-10-13 13:59:47,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:47,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617303034] [2020-10-13 13:59:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:48,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:49,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:52,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:52,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:59:52,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:59:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:59:52,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:59:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 13:59:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:59:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:53,450 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 13:59:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:53,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:53,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:53,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:53,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:53,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:59:53,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:53,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:59:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:59:53,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617303034] [2020-10-13 13:59:53,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:53,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:59:53,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543945498] [2020-10-13 13:59:53,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:59:53,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:53,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:59:53,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:53,528 INFO L87 Difference]: Start difference. First operand 12116 states and 20354 transitions. Second operand 4 states. [2020-10-13 13:59:54,074 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 13:59:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:56,737 INFO L93 Difference]: Finished difference Result 32888 states and 55252 transitions. [2020-10-13 13:59:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:56,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 13:59:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:56,798 INFO L225 Difference]: With dead ends: 32888 [2020-10-13 13:59:56,798 INFO L226 Difference]: Without dead ends: 21058 [2020-10-13 13:59:56,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21058 states. [2020-10-13 13:59:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21058 to 20999. [2020-10-13 13:59:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20999 states. [2020-10-13 13:59:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20999 states to 20999 states and 35161 transitions. [2020-10-13 13:59:58,073 INFO L78 Accepts]: Start accepts. Automaton has 20999 states and 35161 transitions. Word has length 119 [2020-10-13 13:59:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:58,073 INFO L479 AbstractCegarLoop]: Abstraction has 20999 states and 35161 transitions. [2020-10-13 13:59:58,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 20999 states and 35161 transitions. [2020-10-13 13:59:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 13:59:58,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:58,076 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] [2020-10-13 13:59:58,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:59:58,077 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:58,077 INFO L82 PathProgramCache]: Analyzing trace with hash -916770661, now seen corresponding path program 1 times [2020-10-13 13:59:58,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:58,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974201352] [2020-10-13 13:59:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:03,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:00:03,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:00:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:00:03,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 14:00:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 14:00:03,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:03,549 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:00:03,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:03,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:00:03,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:00:03,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974201352] [2020-10-13 14:00:03,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:03,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:03,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20840068] [2020-10-13 14:00:03,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:03,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:03,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:03,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:03,610 INFO L87 Difference]: Start difference. First operand 20999 states and 35161 transitions. Second operand 4 states. [2020-10-13 14:00:04,040 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:00:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:07,457 INFO L93 Difference]: Finished difference Result 56827 states and 95099 transitions. [2020-10-13 14:00:07,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:07,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 14:00:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:07,544 INFO L225 Difference]: With dead ends: 56827 [2020-10-13 14:00:07,545 INFO L226 Difference]: Without dead ends: 36049 [2020-10-13 14:00:07,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36049 states. [2020-10-13 14:00:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36049 to 36019. [2020-10-13 14:00:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36019 states. [2020-10-13 14:00:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36019 states to 36019 states and 60026 transitions. [2020-10-13 14:00:10,897 INFO L78 Accepts]: Start accepts. Automaton has 36019 states and 60026 transitions. Word has length 119 [2020-10-13 14:00:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:10,897 INFO L479 AbstractCegarLoop]: Abstraction has 36019 states and 60026 transitions. [2020-10-13 14:00:10,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 36019 states and 60026 transitions. [2020-10-13 14:00:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:00:10,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:10,899 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] [2020-10-13 14:00:10,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:00:10,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash -712451688, now seen corresponding path program 1 times [2020-10-13 14:00:10,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:10,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155598186] [2020-10-13 14:00:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:10,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:11,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:15,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:15,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:15,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:15,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:00:15,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:00:15,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 14:00:15,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:15,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 14:00:15,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 14:00:15,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:16,346 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:00:16,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:16,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:16,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:16,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:16,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:00:16,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:16,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:16,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:16,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:00:16,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155598186] [2020-10-13 14:00:16,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:16,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:16,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390233484] [2020-10-13 14:00:16,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:16,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:16,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:16,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:16,394 INFO L87 Difference]: Start difference. First operand 36019 states and 60026 transitions. Second operand 4 states. [2020-10-13 14:00:16,781 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2020-10-13 14:00:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:21,706 INFO L93 Difference]: Finished difference Result 96215 states and 160124 transitions. [2020-10-13 14:00:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:21,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 14:00:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:21,879 INFO L225 Difference]: With dead ends: 96215 [2020-10-13 14:00:21,879 INFO L226 Difference]: Without dead ends: 60389 [2020-10-13 14:00:21,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60389 states. [2020-10-13 14:00:25,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60389 to 60387. [2020-10-13 14:00:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60387 states. [2020-10-13 14:00:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60387 states to 60387 states and 99962 transitions. [2020-10-13 14:00:25,560 INFO L78 Accepts]: Start accepts. Automaton has 60387 states and 99962 transitions. Word has length 119 [2020-10-13 14:00:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:25,560 INFO L479 AbstractCegarLoop]: Abstraction has 60387 states and 99962 transitions. [2020-10-13 14:00:25,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 60387 states and 99962 transitions. [2020-10-13 14:00:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 14:00:25,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:25,562 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] [2020-10-13 14:00:25,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:00:25,562 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:25,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:25,562 INFO L82 PathProgramCache]: Analyzing trace with hash 575262117, now seen corresponding path program 1 times [2020-10-13 14:00:25,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:25,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338768377] [2020-10-13 14:00:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:25,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:30,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:30,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 14:00:30,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:00:30,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4805 [2020-10-13 14:00:30,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-13 14:00:30,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:00:30,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:30,782 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:00:30,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:30,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:30,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:30,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:30,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:00:30,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:00:30,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338768377] [2020-10-13 14:00:30,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:30,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:30,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6811379] [2020-10-13 14:00:30,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:30,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:30,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:30,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:30,828 INFO L87 Difference]: Start difference. First operand 60387 states and 99962 transitions. Second operand 4 states. [2020-10-13 14:00:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:36,849 INFO L93 Difference]: Finished difference Result 155175 states and 255388 transitions. [2020-10-13 14:00:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:00:36,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-13 14:00:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:37,029 INFO L225 Difference]: With dead ends: 155175 [2020-10-13 14:00:37,029 INFO L226 Difference]: Without dead ends: 94981 [2020-10-13 14:00:37,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94981 states. [2020-10-13 14:00:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94981 to 94979. [2020-10-13 14:00:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94979 states. [2020-10-13 14:00:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94979 states to 94979 states and 153818 transitions. [2020-10-13 14:00:42,455 INFO L78 Accepts]: Start accepts. Automaton has 94979 states and 153818 transitions. Word has length 121 [2020-10-13 14:00:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:42,456 INFO L479 AbstractCegarLoop]: Abstraction has 94979 states and 153818 transitions. [2020-10-13 14:00:42,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:00:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 94979 states and 153818 transitions. [2020-10-13 14:00:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 14:00:42,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:42,457 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] [2020-10-13 14:00:42,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:00:42,457 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:42,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -588077429, now seen corresponding path program 1 times [2020-10-13 14:00:42,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:42,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905279918] [2020-10-13 14:00:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1206 [2020-10-13 14:00:43,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 14:00:43,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:00:43,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:44,048 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:00:44,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:44,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:44,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:00:44,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905279918] [2020-10-13 14:00:44,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:44,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:44,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165878164] [2020-10-13 14:00:44,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:44,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:44,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:44,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:44,085 INFO L87 Difference]: Start difference. First operand 94979 states and 153818 transitions. Second operand 4 states. [2020-10-13 14:00:44,444 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2020-10-13 14:00:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:53,684 INFO L93 Difference]: Finished difference Result 206565 states and 334802 transitions. [2020-10-13 14:00:53,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:53,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-13 14:00:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:53,879 INFO L225 Difference]: With dead ends: 206565 [2020-10-13 14:00:53,880 INFO L226 Difference]: Without dead ends: 111779 [2020-10-13 14:00:53,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111779 states. [2020-10-13 14:01:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111779 to 111777. [2020-10-13 14:01:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111777 states. [2020-10-13 14:01:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111777 states to 111777 states and 180472 transitions. [2020-10-13 14:01:01,973 INFO L78 Accepts]: Start accepts. Automaton has 111777 states and 180472 transitions. Word has length 122 [2020-10-13 14:01:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:01,973 INFO L479 AbstractCegarLoop]: Abstraction has 111777 states and 180472 transitions. [2020-10-13 14:01:01,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:01:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 111777 states and 180472 transitions. [2020-10-13 14:01:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 14:01:01,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:01,975 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] [2020-10-13 14:01:01,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:01:01,975 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1122051790, now seen corresponding path program 1 times [2020-10-13 14:01:01,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:01,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134193359] [2020-10-13 14:01:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:02,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:07,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 14:01:07,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:01:07,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:01:07,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:01:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 14:01:07,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:01:07,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:07,474 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:01:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:07,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:07,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:07,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:07,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:01:07,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:07,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:07,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:07,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134193359] [2020-10-13 14:01:07,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:07,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:01:07,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778774193] [2020-10-13 14:01:07,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:01:07,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:07,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:01:07,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:01:07,527 INFO L87 Difference]: Start difference. First operand 111777 states and 180472 transitions. Second operand 7 states. [2020-10-13 14:01:07,985 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-10-13 14:01:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:26,691 INFO L93 Difference]: Finished difference Result 378481 states and 611888 transitions. [2020-10-13 14:01:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:01:26,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-13 14:01:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:27,117 INFO L225 Difference]: With dead ends: 378481 [2020-10-13 14:01:27,117 INFO L226 Difference]: Without dead ends: 266899 [2020-10-13 14:01:27,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:01:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266899 states. [2020-10-13 14:01:35,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266899 to 111777. [2020-10-13 14:01:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111777 states. [2020-10-13 14:01:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111777 states to 111777 states and 180096 transitions. [2020-10-13 14:01:35,246 INFO L78 Accepts]: Start accepts. Automaton has 111777 states and 180096 transitions. Word has length 124 [2020-10-13 14:01:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:01:35,246 INFO L479 AbstractCegarLoop]: Abstraction has 111777 states and 180096 transitions. [2020-10-13 14:01:35,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:01:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 111777 states and 180096 transitions. [2020-10-13 14:01:35,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 14:01:35,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:01:35,248 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] [2020-10-13 14:01:35,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:01:35,248 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:01:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:01:35,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1560061569, now seen corresponding path program 1 times [2020-10-13 14:01:35,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:01:35,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197050217] [2020-10-13 14:01:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:01:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:35,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:35,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:36,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:40,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:01:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:40,717 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2020-10-13 14:01:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:01:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:01:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:01:40,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:01:40,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:01:40,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:01:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:01:40,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:01:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:01:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:01:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:01:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:01:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:01:40,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197050217] [2020-10-13 14:01:40,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:01:40,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:01:40,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984925797] [2020-10-13 14:01:40,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:01:40,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:01:40,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:01:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:01:40,763 INFO L87 Difference]: Start difference. First operand 111777 states and 180096 transitions. Second operand 7 states. [2020-10-13 14:01:41,209 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 262