/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/forester-heap/dll-sorted-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:17,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:17,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:17,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:17,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:17,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:17,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:17,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:17,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:17,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:17,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:17,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:17,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:17,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:17,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:17,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:17,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:17,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:17,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:17,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:17,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:17,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:17,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:17,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:17,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:17,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:17,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:17,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:17,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:17,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:17,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:17,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:17,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:17,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:17,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:17,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:17,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:17,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:17,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:17,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:17,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:17,659 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 10:21:17,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:17,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:17,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:17,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:17,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:17,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:17,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:17,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:17,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:17,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:17,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:17,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:17,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:17,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:17,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:17,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:17,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:17,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:17,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:17,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:17,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:17,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:17,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:17,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:17,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:17,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:17,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:17,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:17,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:17,714 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 10:21:18,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:18,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:18,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:18,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:18,060 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:18,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-2.i [2020-10-13 10:21:18,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/793fcbe73/f933e2990aa345e0866bf6cc69e57c26/FLAGb450ec723 [2020-10-13 10:21:18,667 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:18,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-2.i [2020-10-13 10:21:18,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/793fcbe73/f933e2990aa345e0866bf6cc69e57c26/FLAGb450ec723 [2020-10-13 10:21:18,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/793fcbe73/f933e2990aa345e0866bf6cc69e57c26 [2020-10-13 10:21:18,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:18,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:18,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:18,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:18,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:18,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:18" (1/1) ... [2020-10-13 10:21:18,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7636aefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:18, skipping insertion in model container [2020-10-13 10:21:18,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:18" (1/1) ... [2020-10-13 10:21:19,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:19,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:19,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:19,620 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:19,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:19,748 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:19,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19 WrapperNode [2020-10-13 10:21:19,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:19,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:19,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:19,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:19,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:19,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:19,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:19,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:19,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (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 10:21:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:19,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:19,913 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:19,918 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:19,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:19,921 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:19,922 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:19,923 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:19,924 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:19,925 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:19,926 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:19,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:19,928 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:19,929 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:19,930 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:19,931 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:19,932 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:21:19,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:21:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:19,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:20,600 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:20,601 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-13 10:21:20,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:20 BoogieIcfgContainer [2020-10-13 10:21:20,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:20,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:20,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:20,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:20,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:18" (1/3) ... [2020-10-13 10:21:20,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794ca80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:20, skipping insertion in model container [2020-10-13 10:21:20,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (2/3) ... [2020-10-13 10:21:20,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794ca80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:20, skipping insertion in model container [2020-10-13 10:21:20,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:20" (3/3) ... [2020-10-13 10:21:20,617 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2020-10-13 10:21:20,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:20,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-13 10:21:20,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-13 10:21:20,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:20,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:20,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:20,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:20,679 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:20,679 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:20,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:20,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-13 10:21:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:21:20,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:20,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:20,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:20,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1780468538, now seen corresponding path program 1 times [2020-10-13 10:21:20,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:20,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072111326] [2020-10-13 10:21:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:21:21,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:21,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 10:21:21,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:21,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:21,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-13 10:21:21,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:21,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:21:21,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:21,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:21,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,235 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 10:21:21,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072111326] [2020-10-13 10:21:21,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:21,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:21:21,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198413641] [2020-10-13 10:21:21,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:21:21,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:21,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:21:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:21,264 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-10-13 10:21:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:21,447 INFO L93 Difference]: Finished difference Result 112 states and 178 transitions. [2020-10-13 10:21:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:21:21,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:21:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:21,461 INFO L225 Difference]: With dead ends: 112 [2020-10-13 10:21:21,461 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:21:21,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:21:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-13 10:21:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:21:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-13 10:21:21,510 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 10 [2020-10-13 10:21:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:21,510 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-13 10:21:21,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:21:21,511 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-13 10:21:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:21:21,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:21,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:21,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:21,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:21,513 INFO L82 PathProgramCache]: Analyzing trace with hash -658139069, now seen corresponding path program 1 times [2020-10-13 10:21:21,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:21,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222485162] [2020-10-13 10:21:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:21:21,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-13 10:21:21,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:21,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:21,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:21,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,722 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 10:21:21,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222485162] [2020-10-13 10:21:21,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:21,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:21,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960015866] [2020-10-13 10:21:21,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:21,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:21,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:21,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:21,726 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2020-10-13 10:21:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:21,870 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2020-10-13 10:21:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:21,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-13 10:21:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:21,872 INFO L225 Difference]: With dead ends: 107 [2020-10-13 10:21:21,872 INFO L226 Difference]: Without dead ends: 59 [2020-10-13 10:21:21,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:21,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-13 10:21:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-13 10:21:21,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-13 10:21:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-13 10:21:21,884 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-10-13 10:21:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:21,884 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-13 10:21:21,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-13 10:21:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 10:21:21,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:21,885 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:21,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:21,886 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:21,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1481014552, now seen corresponding path program 1 times [2020-10-13 10:21:21,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:21,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246802395] [2020-10-13 10:21:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:21:22,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 10:21:22,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:22,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:21:22,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:22,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:21:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:22,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:21:22,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246802395] [2020-10-13 10:21:22,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:22,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:22,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010526940] [2020-10-13 10:21:22,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:22,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:22,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:22,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:22,113 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-10-13 10:21:22,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:22,335 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-10-13 10:21:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:22,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-13 10:21:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:22,337 INFO L225 Difference]: With dead ends: 91 [2020-10-13 10:21:22,337 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 10:21:22,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 10:21:22,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2020-10-13 10:21:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 10:21:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-13 10:21:22,348 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 15 [2020-10-13 10:21:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:22,349 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-13 10:21:22,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:22,349 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-13 10:21:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:21:22,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:22,350 INFO L422 BasicCegarLoop]: trace histogram [2, 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 10:21:22,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:22,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:22,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1774425742, now seen corresponding path program 1 times [2020-10-13 10:21:22,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:22,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982241161] [2020-10-13 10:21:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:21:22,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-13 10:21:22,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:21:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:22,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:22,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:22,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982241161] [2020-10-13 10:21:22,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:22,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:22,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6865404] [2020-10-13 10:21:22,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:22,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:22,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:22,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:22,936 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 9 states. [2020-10-13 10:21:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:23,504 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2020-10-13 10:21:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:23,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-13 10:21:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:23,506 INFO L225 Difference]: With dead ends: 102 [2020-10-13 10:21:23,506 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:21:23,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:21:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2020-10-13 10:21:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:21:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2020-10-13 10:21:23,517 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 25 [2020-10-13 10:21:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:23,518 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2020-10-13 10:21:23,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2020-10-13 10:21:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:23,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:23,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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 10:21:23,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:23,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:23,521 INFO L82 PathProgramCache]: Analyzing trace with hash -783280294, now seen corresponding path program 1 times [2020-10-13 10:21:23,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:23,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950375296] [2020-10-13 10:21:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:21:24,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1420 [2020-10-13 10:21:24,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:21:24,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:25,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950375296] [2020-10-13 10:21:25,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:25,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:25,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802219494] [2020-10-13 10:21:25,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:25,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:25,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:25,076 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 8 states. [2020-10-13 10:21:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,475 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-10-13 10:21:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:25,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-13 10:21:25,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,477 INFO L225 Difference]: With dead ends: 126 [2020-10-13 10:21:25,477 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 10:21:25,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:25,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 10:21:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 75. [2020-10-13 10:21:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:21:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-10-13 10:21:25,487 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 28 [2020-10-13 10:21:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,488 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-10-13 10:21:25,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-10-13 10:21:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:21:25,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,489 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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 10:21:25,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:25,490 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,490 INFO L82 PathProgramCache]: Analyzing trace with hash -538281373, now seen corresponding path program 1 times [2020-10-13 10:21:25,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298901528] [2020-10-13 10:21:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:21:26,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-13 10:21:26,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:26,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:21:26,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:26,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:26,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:26,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298901528] [2020-10-13 10:21:26,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:26,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:26,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551465042] [2020-10-13 10:21:26,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:26,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:26,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:26,178 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 10 states. [2020-10-13 10:21:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:26,759 INFO L93 Difference]: Finished difference Result 172 states and 208 transitions. [2020-10-13 10:21:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:26,759 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-13 10:21:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:26,761 INFO L225 Difference]: With dead ends: 172 [2020-10-13 10:21:26,761 INFO L226 Difference]: Without dead ends: 137 [2020-10-13 10:21:26,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-13 10:21:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 89. [2020-10-13 10:21:26,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:21:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2020-10-13 10:21:26,772 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 29 [2020-10-13 10:21:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:26,773 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2020-10-13 10:21:26,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2020-10-13 10:21:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:21:26,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:26,774 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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 10:21:26,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:26,775 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:26,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1347627999, now seen corresponding path program 1 times [2020-10-13 10:21:26,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:26,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191054344] [2020-10-13 10:21:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:21:28,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:28,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-10-13 10:21:28,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:21:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:28,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:28,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:28,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 10:21:28,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191054344] [2020-10-13 10:21:28,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:28,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:28,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805405126] [2020-10-13 10:21:28,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:28,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:28,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:28,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:28,079 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 6 states. [2020-10-13 10:21:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:28,270 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2020-10-13 10:21:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:28,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-13 10:21:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:28,273 INFO L225 Difference]: With dead ends: 137 [2020-10-13 10:21:28,273 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:21:28,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:28,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:21:28,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2020-10-13 10:21:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 10:21:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2020-10-13 10:21:28,284 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 29 [2020-10-13 10:21:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:28,284 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2020-10-13 10:21:28,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2020-10-13 10:21:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 10:21:28,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:28,286 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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 10:21:28,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:28,287 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:28,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1731682651, now seen corresponding path program 1 times [2020-10-13 10:21:28,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:28,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320430077] [2020-10-13 10:21:28,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:21:28,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-13 10:21:28,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:21:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:28,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:28,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:28,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320430077] [2020-10-13 10:21:28,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:28,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:28,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257365752] [2020-10-13 10:21:28,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:28,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:28,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:28,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:28,965 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand 11 states. [2020-10-13 10:21:29,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:29,858 INFO L93 Difference]: Finished difference Result 176 states and 215 transitions. [2020-10-13 10:21:29,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:21:29,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-13 10:21:29,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:29,860 INFO L225 Difference]: With dead ends: 176 [2020-10-13 10:21:29,860 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 10:21:29,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 10:21:29,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 103. [2020-10-13 10:21:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 10:21:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2020-10-13 10:21:29,871 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 29 [2020-10-13 10:21:29,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:29,871 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2020-10-13 10:21:29,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2020-10-13 10:21:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:21:29,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:29,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:29,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:29,874 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:29,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:29,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1755426375, now seen corresponding path program 1 times [2020-10-13 10:21:29,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:29,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326698195] [2020-10-13 10:21:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:21:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-13 10:21:30,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:21:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:30,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:30,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326698195] [2020-10-13 10:21:30,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:30,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:30,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519492803] [2020-10-13 10:21:30,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:30,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:30,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:30,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:30,214 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand 9 states. [2020-10-13 10:21:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:30,734 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2020-10-13 10:21:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:30,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-13 10:21:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:30,736 INFO L225 Difference]: With dead ends: 154 [2020-10-13 10:21:30,736 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:21:30,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:21:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 109. [2020-10-13 10:21:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 10:21:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 137 transitions. [2020-10-13 10:21:30,747 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 137 transitions. Word has length 31 [2020-10-13 10:21:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:30,748 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 137 transitions. [2020-10-13 10:21:30,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 137 transitions. [2020-10-13 10:21:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:21:30,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:30,749 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 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 10:21:30,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:30,750 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:30,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:30,750 INFO L82 PathProgramCache]: Analyzing trace with hash 816547758, now seen corresponding path program 1 times [2020-10-13 10:21:30,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:30,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889748444] [2020-10-13 10:21:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:21:32,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:21:32,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2098 [2020-10-13 10:21:32,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:21:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:32,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:32,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:21:32,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889748444] [2020-10-13 10:21:32,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:32,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 10:21:32,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144679110] [2020-10-13 10:21:32,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:32,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:32,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:32,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:32,978 INFO L87 Difference]: Start difference. First operand 109 states and 137 transitions. Second operand 8 states. [2020-10-13 10:21:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:33,262 INFO L93 Difference]: Finished difference Result 174 states and 212 transitions. [2020-10-13 10:21:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:33,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-13 10:21:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:33,264 INFO L225 Difference]: With dead ends: 174 [2020-10-13 10:21:33,265 INFO L226 Difference]: Without dead ends: 149 [2020-10-13 10:21:33,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-13 10:21:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 118. [2020-10-13 10:21:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-13 10:21:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 150 transitions. [2020-10-13 10:21:33,273 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 150 transitions. Word has length 31 [2020-10-13 10:21:33,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:33,273 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 150 transitions. [2020-10-13 10:21:33,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:33,273 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 150 transitions. [2020-10-13 10:21:33,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:21:33,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:33,277 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 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 10:21:33,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:33,278 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:33,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:33,278 INFO L82 PathProgramCache]: Analyzing trace with hash 7201132, now seen corresponding path program 1 times [2020-10-13 10:21:33,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:33,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55775032] [2020-10-13 10:21:33,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:21:33,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-13 10:21:33,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:33,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:21:33,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:34,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:34,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:34,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:34,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:34,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:34,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55775032] [2020-10-13 10:21:34,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:34,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:34,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352107172] [2020-10-13 10:21:34,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:34,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:34,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:34,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:34,152 INFO L87 Difference]: Start difference. First operand 118 states and 150 transitions. Second operand 11 states. [2020-10-13 10:21:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:35,017 INFO L93 Difference]: Finished difference Result 237 states and 284 transitions. [2020-10-13 10:21:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:35,017 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-13 10:21:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:35,019 INFO L225 Difference]: With dead ends: 237 [2020-10-13 10:21:35,019 INFO L226 Difference]: Without dead ends: 235 [2020-10-13 10:21:35,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:21:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-13 10:21:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 145. [2020-10-13 10:21:35,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-13 10:21:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 186 transitions. [2020-10-13 10:21:35,030 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 186 transitions. Word has length 31 [2020-10-13 10:21:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:35,031 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 186 transitions. [2020-10-13 10:21:35,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 186 transitions. [2020-10-13 10:21:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:21:35,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:35,032 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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 10:21:35,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:35,032 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1224419173, now seen corresponding path program 1 times [2020-10-13 10:21:35,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:35,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431145809] [2020-10-13 10:21:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:21:35,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-13 10:21:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:21:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:35,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:35,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:35,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:35,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431145809] [2020-10-13 10:21:35,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:35,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:35,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52587291] [2020-10-13 10:21:35,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:35,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:35,617 INFO L87 Difference]: Start difference. First operand 145 states and 186 transitions. Second operand 11 states. [2020-10-13 10:21:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:36,716 INFO L93 Difference]: Finished difference Result 235 states and 291 transitions. [2020-10-13 10:21:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:21:36,716 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-13 10:21:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:36,718 INFO L225 Difference]: With dead ends: 235 [2020-10-13 10:21:36,718 INFO L226 Difference]: Without dead ends: 233 [2020-10-13 10:21:36,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:21:36,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-13 10:21:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 154. [2020-10-13 10:21:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-13 10:21:36,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 199 transitions. [2020-10-13 10:21:36,730 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 199 transitions. Word has length 32 [2020-10-13 10:21:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:36,731 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 199 transitions. [2020-10-13 10:21:36,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 199 transitions. [2020-10-13 10:21:36,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:21:36,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:36,732 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 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 10:21:36,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:36,732 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash 222743739, now seen corresponding path program 1 times [2020-10-13 10:21:36,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:36,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794856438] [2020-10-13 10:21:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:21:37,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:37,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-13 10:21:37,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 10:21:37,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:37,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:37,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:37,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:21:37,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794856438] [2020-10-13 10:21:37,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:37,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:37,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28117982] [2020-10-13 10:21:37,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:37,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:37,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:37,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:37,752 INFO L87 Difference]: Start difference. First operand 154 states and 199 transitions. Second operand 6 states. [2020-10-13 10:21:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:37,973 INFO L93 Difference]: Finished difference Result 167 states and 214 transitions. [2020-10-13 10:21:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:37,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-13 10:21:37,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:37,976 INFO L225 Difference]: With dead ends: 167 [2020-10-13 10:21:37,976 INFO L226 Difference]: Without dead ends: 165 [2020-10-13 10:21:37,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-13 10:21:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2020-10-13 10:21:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 10:21:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 206 transitions. [2020-10-13 10:21:37,996 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 206 transitions. Word has length 32 [2020-10-13 10:21:37,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:37,997 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 206 transitions. [2020-10-13 10:21:37,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:37,997 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 206 transitions. [2020-10-13 10:21:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:21:37,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:37,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 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 10:21:37,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:21:37,999 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:37,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:37,999 INFO L82 PathProgramCache]: Analyzing trace with hash 280002041, now seen corresponding path program 1 times [2020-10-13 10:21:37,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:38,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808765990] [2020-10-13 10:21:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:38,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:21:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:21:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-13 10:21:38,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:21:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:21:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:38,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:38,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:38,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:38,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:21:38,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808765990] [2020-10-13 10:21:38,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:38,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:38,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146877642] [2020-10-13 10:21:38,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:38,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:38,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:38,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:38,886 INFO L87 Difference]: Start difference. First operand 159 states and 206 transitions. Second operand 5 states. [2020-10-13 10:21:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:39,067 INFO L93 Difference]: Finished difference Result 183 states and 230 transitions. [2020-10-13 10:21:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:39,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-13 10:21:39,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:39,068 INFO L225 Difference]: With dead ends: 183 [2020-10-13 10:21:39,068 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 10:21:39,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 10:21:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 159. [2020-10-13 10:21:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-13 10:21:39,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 204 transitions. [2020-10-13 10:21:39,084 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 204 transitions. Word has length 32 [2020-10-13 10:21:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:39,086 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 204 transitions. [2020-10-13 10:21:39,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:39,086 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 204 transitions. [2020-10-13 10:21:39,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:39,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:39,088 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 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 10:21:39,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:21:39,088 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:39,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1570859960, now seen corresponding path program 2 times [2020-10-13 10:21:39,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:39,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930077845] [2020-10-13 10:21:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:39,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:39,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-13 10:21:39,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:21:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:40,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:40,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:40,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:40,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:40,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930077845] [2020-10-13 10:21:40,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:40,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:40,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631279501] [2020-10-13 10:21:40,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:40,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:40,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:40,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:40,066 INFO L87 Difference]: Start difference. First operand 159 states and 204 transitions. Second operand 11 states. [2020-10-13 10:21:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:40,704 INFO L93 Difference]: Finished difference Result 307 states and 386 transitions. [2020-10-13 10:21:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:40,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-13 10:21:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:40,706 INFO L225 Difference]: With dead ends: 307 [2020-10-13 10:21:40,706 INFO L226 Difference]: Without dead ends: 245 [2020-10-13 10:21:40,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-13 10:21:40,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 174. [2020-10-13 10:21:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 10:21:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 224 transitions. [2020-10-13 10:21:40,719 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 224 transitions. Word has length 33 [2020-10-13 10:21:40,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:40,720 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 224 transitions. [2020-10-13 10:21:40,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 224 transitions. [2020-10-13 10:21:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:40,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:40,721 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 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 10:21:40,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:21:40,721 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1669516016, now seen corresponding path program 1 times [2020-10-13 10:21:40,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:40,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180593595] [2020-10-13 10:21:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:41,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:41,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 779 [2020-10-13 10:21:41,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 10:21:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:41,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:41,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:41,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:41,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:21:41,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180593595] [2020-10-13 10:21:41,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:41,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:41,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104811490] [2020-10-13 10:21:41,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:41,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:41,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:41,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:41,592 INFO L87 Difference]: Start difference. First operand 174 states and 224 transitions. Second operand 6 states. [2020-10-13 10:21:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:41,756 INFO L93 Difference]: Finished difference Result 174 states and 224 transitions. [2020-10-13 10:21:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:41,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-13 10:21:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:41,758 INFO L225 Difference]: With dead ends: 174 [2020-10-13 10:21:41,758 INFO L226 Difference]: Without dead ends: 172 [2020-10-13 10:21:41,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:41,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-13 10:21:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-13 10:21:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 10:21:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 222 transitions. [2020-10-13 10:21:41,771 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 222 transitions. Word has length 33 [2020-10-13 10:21:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:41,771 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 222 transitions. [2020-10-13 10:21:41,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 222 transitions. [2020-10-13 10:21:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:41,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:41,772 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:41,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:21:41,773 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:41,773 INFO L82 PathProgramCache]: Analyzing trace with hash 793625404, now seen corresponding path program 2 times [2020-10-13 10:21:41,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:41,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579008415] [2020-10-13 10:21:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:42,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:42,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-10-13 10:21:42,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:21:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:42,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:42,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:42,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:42,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:42,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:42,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579008415] [2020-10-13 10:21:42,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:42,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:42,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810725264] [2020-10-13 10:21:42,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:42,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:42,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:42,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:42,602 INFO L87 Difference]: Start difference. First operand 172 states and 222 transitions. Second operand 12 states. [2020-10-13 10:21:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:43,795 INFO L93 Difference]: Finished difference Result 270 states and 344 transitions. [2020-10-13 10:21:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:21:43,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-13 10:21:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:43,798 INFO L225 Difference]: With dead ends: 270 [2020-10-13 10:21:43,799 INFO L226 Difference]: Without dead ends: 268 [2020-10-13 10:21:43,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:21:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-13 10:21:43,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 191. [2020-10-13 10:21:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-13 10:21:43,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 249 transitions. [2020-10-13 10:21:43,812 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 249 transitions. Word has length 33 [2020-10-13 10:21:43,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:43,813 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 249 transitions. [2020-10-13 10:21:43,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 249 transitions. [2020-10-13 10:21:43,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 10:21:43,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:43,814 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:43,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:21:43,814 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:43,815 INFO L82 PathProgramCache]: Analyzing trace with hash -691499361, now seen corresponding path program 1 times [2020-10-13 10:21:43,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:43,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987985901] [2020-10-13 10:21:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:44,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:21:45,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-10-13 10:21:45,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 10:21:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:45,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:45,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:45,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:45,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:45,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:45,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:21:45,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987985901] [2020-10-13 10:21:45,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:45,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:45,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099538070] [2020-10-13 10:21:45,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:45,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:45,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:45,440 INFO L87 Difference]: Start difference. First operand 191 states and 249 transitions. Second operand 6 states. [2020-10-13 10:21:45,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:45,665 INFO L93 Difference]: Finished difference Result 329 states and 430 transitions. [2020-10-13 10:21:45,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:45,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-13 10:21:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:45,667 INFO L225 Difference]: With dead ends: 329 [2020-10-13 10:21:45,667 INFO L226 Difference]: Without dead ends: 182 [2020-10-13 10:21:45,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-13 10:21:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-10-13 10:21:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-13 10:21:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 232 transitions. [2020-10-13 10:21:45,682 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 232 transitions. Word has length 34 [2020-10-13 10:21:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:45,683 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 232 transitions. [2020-10-13 10:21:45,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 232 transitions. [2020-10-13 10:21:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:45,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:45,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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 10:21:45,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:21:45,684 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:45,684 INFO L82 PathProgramCache]: Analyzing trace with hash -728743133, now seen corresponding path program 2 times [2020-10-13 10:21:45,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:45,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333456788] [2020-10-13 10:21:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:47,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:47,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-13 10:21:47,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:47,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:47,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:47,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:47,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:47,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:47,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:47,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333456788] [2020-10-13 10:21:47,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:47,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:47,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66976658] [2020-10-13 10:21:47,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:47,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:47,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:47,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:47,225 INFO L87 Difference]: Start difference. First operand 182 states and 232 transitions. Second operand 10 states. [2020-10-13 10:21:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:48,000 INFO L93 Difference]: Finished difference Result 276 states and 338 transitions. [2020-10-13 10:21:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:21:48,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-13 10:21:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:48,003 INFO L225 Difference]: With dead ends: 276 [2020-10-13 10:21:48,003 INFO L226 Difference]: Without dead ends: 234 [2020-10-13 10:21:48,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:21:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-13 10:21:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 182. [2020-10-13 10:21:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-13 10:21:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 231 transitions. [2020-10-13 10:21:48,019 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 231 transitions. Word has length 35 [2020-10-13 10:21:48,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:48,019 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 231 transitions. [2020-10-13 10:21:48,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:48,019 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 231 transitions. [2020-10-13 10:21:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:48,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:48,020 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:48,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:21:48,021 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:48,021 INFO L82 PathProgramCache]: Analyzing trace with hash -717669904, now seen corresponding path program 3 times [2020-10-13 10:21:48,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:48,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512547959] [2020-10-13 10:21:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:48,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-13 10:21:48,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:21:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:48,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:48,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:48,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:48,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:48,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512547959] [2020-10-13 10:21:48,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:48,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:48,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926088825] [2020-10-13 10:21:48,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:48,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:48,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:48,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:48,862 INFO L87 Difference]: Start difference. First operand 182 states and 231 transitions. Second operand 12 states. [2020-10-13 10:21:49,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:49,694 INFO L93 Difference]: Finished difference Result 304 states and 375 transitions. [2020-10-13 10:21:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:21:49,694 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-13 10:21:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:49,695 INFO L225 Difference]: With dead ends: 304 [2020-10-13 10:21:49,696 INFO L226 Difference]: Without dead ends: 255 [2020-10-13 10:21:49,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:21:49,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-13 10:21:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 199. [2020-10-13 10:21:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 10:21:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 252 transitions. [2020-10-13 10:21:49,708 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 252 transitions. Word has length 36 [2020-10-13 10:21:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:49,709 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 252 transitions. [2020-10-13 10:21:49,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 252 transitions. [2020-10-13 10:21:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:49,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:49,710 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:49,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:21:49,710 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:49,711 INFO L82 PathProgramCache]: Analyzing trace with hash 404133486, now seen corresponding path program 4 times [2020-10-13 10:21:49,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:49,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426534782] [2020-10-13 10:21:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:50,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:50,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:50,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-13 10:21:50,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:21:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:21:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:50,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:50,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:50,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:50,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426534782] [2020-10-13 10:21:50,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:50,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:50,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814918221] [2020-10-13 10:21:50,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:50,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:50,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:50,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:50,500 INFO L87 Difference]: Start difference. First operand 199 states and 252 transitions. Second operand 13 states. [2020-10-13 10:21:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:51,759 INFO L93 Difference]: Finished difference Result 292 states and 363 transitions. [2020-10-13 10:21:51,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:21:51,759 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-13 10:21:51,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:51,762 INFO L225 Difference]: With dead ends: 292 [2020-10-13 10:21:51,762 INFO L226 Difference]: Without dead ends: 290 [2020-10-13 10:21:51,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:21:51,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-13 10:21:51,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 208. [2020-10-13 10:21:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-13 10:21:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 264 transitions. [2020-10-13 10:21:51,778 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 264 transitions. Word has length 36 [2020-10-13 10:21:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:51,778 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 264 transitions. [2020-10-13 10:21:51,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 264 transitions. [2020-10-13 10:21:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:21:51,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:51,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:51,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:21:51,780 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:51,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1279636953, now seen corresponding path program 1 times [2020-10-13 10:21:51,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:51,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419455474] [2020-10-13 10:21:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 10:21:52,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-13 10:21:52,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:52,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:21:52,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:52,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:52,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:52,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:52,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:52,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419455474] [2020-10-13 10:21:52,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:52,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:52,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782970182] [2020-10-13 10:21:52,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:52,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:52,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:52,179 INFO L87 Difference]: Start difference. First operand 208 states and 264 transitions. Second operand 9 states. [2020-10-13 10:21:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:52,631 INFO L93 Difference]: Finished difference Result 245 states and 304 transitions. [2020-10-13 10:21:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:52,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-13 10:21:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:52,636 INFO L225 Difference]: With dead ends: 245 [2020-10-13 10:21:52,636 INFO L226 Difference]: Without dead ends: 220 [2020-10-13 10:21:52,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-13 10:21:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2020-10-13 10:21:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-13 10:21:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 269 transitions. [2020-10-13 10:21:52,659 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 269 transitions. Word has length 37 [2020-10-13 10:21:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:52,660 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 269 transitions. [2020-10-13 10:21:52,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 269 transitions. [2020-10-13 10:21:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:21:52,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:52,661 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:52,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:21:52,661 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:52,662 INFO L82 PathProgramCache]: Analyzing trace with hash -17775533, now seen corresponding path program 3 times [2020-10-13 10:21:52,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:52,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902813781] [2020-10-13 10:21:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 10:21:53,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-13 10:21:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:21:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:21:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:53,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:53,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:53,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:53,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:53,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:53,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902813781] [2020-10-13 10:21:53,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:53,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:53,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719058008] [2020-10-13 10:21:53,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:53,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:53,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:53,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:53,753 INFO L87 Difference]: Start difference. First operand 213 states and 269 transitions. Second operand 13 states. [2020-10-13 10:21:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:54,752 INFO L93 Difference]: Finished difference Result 279 states and 351 transitions. [2020-10-13 10:21:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:54,752 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-13 10:21:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:54,754 INFO L225 Difference]: With dead ends: 279 [2020-10-13 10:21:54,754 INFO L226 Difference]: Without dead ends: 277 [2020-10-13 10:21:54,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:21:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-13 10:21:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 213. [2020-10-13 10:21:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-13 10:21:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 268 transitions. [2020-10-13 10:21:54,770 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 268 transitions. Word has length 37 [2020-10-13 10:21:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:54,770 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 268 transitions. [2020-10-13 10:21:54,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 268 transitions. [2020-10-13 10:21:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:21:54,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:54,771 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:54,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:21:54,772 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:54,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:54,772 INFO L82 PathProgramCache]: Analyzing trace with hash -536500912, now seen corresponding path program 1 times [2020-10-13 10:21:54,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:54,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600591096] [2020-10-13 10:21:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:21:55,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-13 10:21:55,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:55,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:21:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:55,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600591096] [2020-10-13 10:21:55,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:55,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:55,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281576610] [2020-10-13 10:21:55,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:55,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:55,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:55,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:55,159 INFO L87 Difference]: Start difference. First operand 213 states and 268 transitions. Second operand 11 states. [2020-10-13 10:21:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:56,151 INFO L93 Difference]: Finished difference Result 304 states and 372 transitions. [2020-10-13 10:21:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:21:56,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-10-13 10:21:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:56,153 INFO L225 Difference]: With dead ends: 304 [2020-10-13 10:21:56,154 INFO L226 Difference]: Without dead ends: 268 [2020-10-13 10:21:56,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:21:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-13 10:21:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 225. [2020-10-13 10:21:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-13 10:21:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 284 transitions. [2020-10-13 10:21:56,171 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 284 transitions. Word has length 38 [2020-10-13 10:21:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:56,171 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 284 transitions. [2020-10-13 10:21:56,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 284 transitions. [2020-10-13 10:21:56,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:21:56,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:56,172 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 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 10:21:56,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:21:56,172 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:56,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:56,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1226126595, now seen corresponding path program 1 times [2020-10-13 10:21:56,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:56,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967492856] [2020-10-13 10:21:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:21:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-13 10:21:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:21:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:21:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,574 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 42 [2020-10-13 10:21:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:57,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:57,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:57,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:57,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:57,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:57,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967492856] [2020-10-13 10:21:57,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:57,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:57,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837399635] [2020-10-13 10:21:57,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:57,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:57,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:57,673 INFO L87 Difference]: Start difference. First operand 225 states and 284 transitions. Second operand 13 states. [2020-10-13 10:21:58,895 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2020-10-13 10:21:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:59,228 INFO L93 Difference]: Finished difference Result 303 states and 371 transitions. [2020-10-13 10:21:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:21:59,228 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-13 10:21:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:59,231 INFO L225 Difference]: With dead ends: 303 [2020-10-13 10:21:59,231 INFO L226 Difference]: Without dead ends: 301 [2020-10-13 10:21:59,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:21:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-13 10:21:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 219. [2020-10-13 10:21:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-13 10:21:59,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 277 transitions. [2020-10-13 10:21:59,248 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 277 transitions. Word has length 38 [2020-10-13 10:21:59,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:59,248 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 277 transitions. [2020-10-13 10:21:59,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:59,249 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 277 transitions. [2020-10-13 10:21:59,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:21:59,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:59,250 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:59,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:21:59,250 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:59,250 INFO L82 PathProgramCache]: Analyzing trace with hash 8376, now seen corresponding path program 5 times [2020-10-13 10:21:59,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:59,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724501351] [2020-10-13 10:21:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:00,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:22:00,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-13 10:22:00,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:22:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:00,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:00,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:00,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:00,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:00,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:00,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724501351] [2020-10-13 10:22:00,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:00,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:00,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485262695] [2020-10-13 10:22:00,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:00,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:00,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:00,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:00,290 INFO L87 Difference]: Start difference. First operand 219 states and 277 transitions. Second operand 13 states. [2020-10-13 10:22:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:01,726 INFO L93 Difference]: Finished difference Result 305 states and 378 transitions. [2020-10-13 10:22:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:01,726 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-13 10:22:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:01,728 INFO L225 Difference]: With dead ends: 305 [2020-10-13 10:22:01,728 INFO L226 Difference]: Without dead ends: 303 [2020-10-13 10:22:01,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-13 10:22:01,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 228. [2020-10-13 10:22:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-13 10:22:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 290 transitions. [2020-10-13 10:22:01,745 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 290 transitions. Word has length 39 [2020-10-13 10:22:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:01,746 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 290 transitions. [2020-10-13 10:22:01,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 290 transitions. [2020-10-13 10:22:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:22:01,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:01,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:01,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:22:01,747 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1899712663, now seen corresponding path program 1 times [2020-10-13 10:22:01,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:01,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787357083] [2020-10-13 10:22:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:22:06,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:06,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4569 [2020-10-13 10:22:06,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:06,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:22:06,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:06,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:06,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:06,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:06,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:06,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:06,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:06,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:22:06,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787357083] [2020-10-13 10:22:06,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:06,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:06,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178930320] [2020-10-13 10:22:06,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:06,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:06,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:06,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:06,649 INFO L87 Difference]: Start difference. First operand 228 states and 290 transitions. Second operand 11 states. [2020-10-13 10:22:07,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:07,227 INFO L93 Difference]: Finished difference Result 284 states and 351 transitions. [2020-10-13 10:22:07,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:07,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-13 10:22:07,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:07,230 INFO L225 Difference]: With dead ends: 284 [2020-10-13 10:22:07,230 INFO L226 Difference]: Without dead ends: 272 [2020-10-13 10:22:07,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:07,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-13 10:22:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 240. [2020-10-13 10:22:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-13 10:22:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 304 transitions. [2020-10-13 10:22:07,249 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 304 transitions. Word has length 39 [2020-10-13 10:22:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:07,250 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 304 transitions. [2020-10-13 10:22:07,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 304 transitions. [2020-10-13 10:22:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:22:07,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:07,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:07,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:22:07,251 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1450691993, now seen corresponding path program 1 times [2020-10-13 10:22:07,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:07,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121021181] [2020-10-13 10:22:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:22:09,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:22:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-10-13 10:22:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:22:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:22:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:09,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:09,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:22:09,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121021181] [2020-10-13 10:22:09,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:09,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:22:09,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188616320] [2020-10-13 10:22:09,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:22:09,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:09,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:22:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:22:09,080 INFO L87 Difference]: Start difference. First operand 240 states and 304 transitions. Second operand 8 states. [2020-10-13 10:22:09,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:09,350 INFO L93 Difference]: Finished difference Result 274 states and 343 transitions. [2020-10-13 10:22:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:22:09,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-13 10:22:09,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:09,352 INFO L225 Difference]: With dead ends: 274 [2020-10-13 10:22:09,352 INFO L226 Difference]: Without dead ends: 234 [2020-10-13 10:22:09,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:22:09,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-13 10:22:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2020-10-13 10:22:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-13 10:22:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 296 transitions. [2020-10-13 10:22:09,377 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 296 transitions. Word has length 39 [2020-10-13 10:22:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:09,377 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 296 transitions. [2020-10-13 10:22:09,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:22:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 296 transitions. [2020-10-13 10:22:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:22:09,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:09,378 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:09,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:09,379 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash 398790395, now seen corresponding path program 6 times [2020-10-13 10:22:09,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:09,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020061246] [2020-10-13 10:22:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:22:10,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-13 10:22:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:10,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:10,345 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-10-13 10:22:10,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:10,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:10,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:10,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:10,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020061246] [2020-10-13 10:22:10,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:10,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:10,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335220973] [2020-10-13 10:22:10,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:10,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:10,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:10,600 INFO L87 Difference]: Start difference. First operand 234 states and 296 transitions. Second operand 13 states. [2020-10-13 10:22:11,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:11,522 INFO L93 Difference]: Finished difference Result 358 states and 446 transitions. [2020-10-13 10:22:11,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:11,522 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-13 10:22:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:11,525 INFO L225 Difference]: With dead ends: 358 [2020-10-13 10:22:11,525 INFO L226 Difference]: Without dead ends: 309 [2020-10-13 10:22:11,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-13 10:22:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 248. [2020-10-13 10:22:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-13 10:22:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 314 transitions. [2020-10-13 10:22:11,542 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 314 transitions. Word has length 40 [2020-10-13 10:22:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:11,542 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 314 transitions. [2020-10-13 10:22:11,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 314 transitions. [2020-10-13 10:22:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:22:11,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:11,544 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:11,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:11,544 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:11,544 INFO L82 PathProgramCache]: Analyzing trace with hash -27174665, now seen corresponding path program 7 times [2020-10-13 10:22:11,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:11,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736995977] [2020-10-13 10:22:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:22:12,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-13 10:22:12,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:12,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:22:12,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:12,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736995977] [2020-10-13 10:22:12,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:12,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:12,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517766730] [2020-10-13 10:22:12,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:12,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:12,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:12,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:12,792 INFO L87 Difference]: Start difference. First operand 248 states and 314 transitions. Second operand 14 states. [2020-10-13 10:22:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:14,346 INFO L93 Difference]: Finished difference Result 341 states and 432 transitions. [2020-10-13 10:22:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:14,347 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-10-13 10:22:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:14,349 INFO L225 Difference]: With dead ends: 341 [2020-10-13 10:22:14,350 INFO L226 Difference]: Without dead ends: 339 [2020-10-13 10:22:14,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-13 10:22:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 282. [2020-10-13 10:22:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-13 10:22:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 361 transitions. [2020-10-13 10:22:14,371 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 361 transitions. Word has length 40 [2020-10-13 10:22:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:14,371 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 361 transitions. [2020-10-13 10:22:14,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 361 transitions. [2020-10-13 10:22:14,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:22:14,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:14,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 10:22:14,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:14,372 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:14,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:14,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1045253799, now seen corresponding path program 1 times [2020-10-13 10:22:14,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:14,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929609416] [2020-10-13 10:22:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:22:14,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-13 10:22:14,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:22:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:15,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:15,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:15,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:15,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929609416] [2020-10-13 10:22:15,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:15,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:15,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330897657] [2020-10-13 10:22:15,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:15,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:15,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:15,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:15,034 INFO L87 Difference]: Start difference. First operand 282 states and 361 transitions. Second operand 12 states. [2020-10-13 10:22:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:15,970 INFO L93 Difference]: Finished difference Result 424 states and 516 transitions. [2020-10-13 10:22:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:15,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-13 10:22:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:15,972 INFO L225 Difference]: With dead ends: 424 [2020-10-13 10:22:15,972 INFO L226 Difference]: Without dead ends: 391 [2020-10-13 10:22:15,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-13 10:22:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 300. [2020-10-13 10:22:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-13 10:22:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 378 transitions. [2020-10-13 10:22:15,995 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 378 transitions. Word has length 40 [2020-10-13 10:22:15,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:15,996 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 378 transitions. [2020-10-13 10:22:15,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:15,996 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 378 transitions. [2020-10-13 10:22:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:22:15,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:15,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:15,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:15,998 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash 6448368, now seen corresponding path program 8 times [2020-10-13 10:22:15,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:15,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717936224] [2020-10-13 10:22:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2165 [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:22:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:18,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:18,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:18,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:18,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:18,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:18,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:18,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717936224] [2020-10-13 10:22:18,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:18,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:18,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764520476] [2020-10-13 10:22:18,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:18,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:18,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:18,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:18,435 INFO L87 Difference]: Start difference. First operand 300 states and 378 transitions. Second operand 12 states. [2020-10-13 10:22:19,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:19,505 INFO L93 Difference]: Finished difference Result 399 states and 487 transitions. [2020-10-13 10:22:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:19,506 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-13 10:22:19,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:19,508 INFO L225 Difference]: With dead ends: 399 [2020-10-13 10:22:19,508 INFO L226 Difference]: Without dead ends: 358 [2020-10-13 10:22:19,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:19,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-13 10:22:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 300. [2020-10-13 10:22:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-13 10:22:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 377 transitions. [2020-10-13 10:22:19,531 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 377 transitions. Word has length 42 [2020-10-13 10:22:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:19,531 INFO L479 AbstractCegarLoop]: Abstraction has 300 states and 377 transitions. [2020-10-13 10:22:19,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 377 transitions. [2020-10-13 10:22:19,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:22:19,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:19,533 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:19,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:19,533 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:19,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 242035661, now seen corresponding path program 9 times [2020-10-13 10:22:19,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:19,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100814161] [2020-10-13 10:22:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:22:20,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:20,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-13 10:22:20,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:20,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:22:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:20,446 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-13 10:22:20,568 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2020-10-13 10:22:20,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:20,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:20,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:20,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:20,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:20,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:20,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:20,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100814161] [2020-10-13 10:22:20,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:20,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:20,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432699423] [2020-10-13 10:22:20,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:20,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:20,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:20,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:20,766 INFO L87 Difference]: Start difference. First operand 300 states and 377 transitions. Second operand 14 states. [2020-10-13 10:22:21,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:21,930 INFO L93 Difference]: Finished difference Result 415 states and 508 transitions. [2020-10-13 10:22:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:21,930 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-13 10:22:21,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:21,938 INFO L225 Difference]: With dead ends: 415 [2020-10-13 10:22:21,938 INFO L226 Difference]: Without dead ends: 380 [2020-10-13 10:22:21,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-13 10:22:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 319. [2020-10-13 10:22:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 10:22:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 401 transitions. [2020-10-13 10:22:21,964 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 401 transitions. Word has length 43 [2020-10-13 10:22:21,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:21,965 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 401 transitions. [2020-10-13 10:22:21,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 401 transitions. [2020-10-13 10:22:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:22:21,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:21,966 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:21,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:21,967 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:21,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash 746296975, now seen corresponding path program 10 times [2020-10-13 10:22:21,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:21,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978156711] [2020-10-13 10:22:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:22,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:22:22,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-13 10:22:22,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:22,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:22:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:23,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:23,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978156711] [2020-10-13 10:22:23,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:23,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:23,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321086268] [2020-10-13 10:22:23,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:23,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:23,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:23,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:23,317 INFO L87 Difference]: Start difference. First operand 319 states and 401 transitions. Second operand 15 states. [2020-10-13 10:22:24,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:24,948 INFO L93 Difference]: Finished difference Result 400 states and 499 transitions. [2020-10-13 10:22:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:24,948 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-13 10:22:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:24,951 INFO L225 Difference]: With dead ends: 400 [2020-10-13 10:22:24,951 INFO L226 Difference]: Without dead ends: 398 [2020-10-13 10:22:24,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:24,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-13 10:22:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 327. [2020-10-13 10:22:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-13 10:22:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 411 transitions. [2020-10-13 10:22:24,978 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 411 transitions. Word has length 43 [2020-10-13 10:22:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:24,979 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 411 transitions. [2020-10-13 10:22:24,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 411 transitions. [2020-10-13 10:22:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:22:24,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:24,980 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:24,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:24,981 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:24,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:24,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1692719278, now seen corresponding path program 1 times [2020-10-13 10:22:24,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:24,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139361886] [2020-10-13 10:22:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3015 [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:28,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:28,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:28,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:28,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:22:28,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139361886] [2020-10-13 10:22:28,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:28,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:28,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17921994] [2020-10-13 10:22:28,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:28,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:28,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:28,087 INFO L87 Difference]: Start difference. First operand 327 states and 411 transitions. Second operand 9 states. [2020-10-13 10:22:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:28,408 INFO L93 Difference]: Finished difference Result 359 states and 444 transitions. [2020-10-13 10:22:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:22:28,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-13 10:22:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:28,411 INFO L225 Difference]: With dead ends: 359 [2020-10-13 10:22:28,411 INFO L226 Difference]: Without dead ends: 328 [2020-10-13 10:22:28,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:28,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-13 10:22:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 321. [2020-10-13 10:22:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-13 10:22:28,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 392 transitions. [2020-10-13 10:22:28,436 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 392 transitions. Word has length 43 [2020-10-13 10:22:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:28,436 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 392 transitions. [2020-10-13 10:22:28,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:28,436 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 392 transitions. [2020-10-13 10:22:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:22:28,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:28,437 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:28,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:22:28,437 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1636361326, now seen corresponding path program 1 times [2020-10-13 10:22:28,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:28,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803410657] [2020-10-13 10:22:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:30,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:22:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:33,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:33,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:22:33,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803410657] [2020-10-13 10:22:33,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:33,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:33,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190538093] [2020-10-13 10:22:33,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:33,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:33,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:33,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:33,830 INFO L87 Difference]: Start difference. First operand 321 states and 392 transitions. Second operand 12 states. [2020-10-13 10:22:35,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:35,076 INFO L93 Difference]: Finished difference Result 403 states and 477 transitions. [2020-10-13 10:22:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:35,082 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-13 10:22:35,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:35,084 INFO L225 Difference]: With dead ends: 403 [2020-10-13 10:22:35,085 INFO L226 Difference]: Without dead ends: 391 [2020-10-13 10:22:35,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:35,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-13 10:22:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 318. [2020-10-13 10:22:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-13 10:22:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 388 transitions. [2020-10-13 10:22:35,118 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 388 transitions. Word has length 43 [2020-10-13 10:22:35,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:35,118 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 388 transitions. [2020-10-13 10:22:35,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 388 transitions. [2020-10-13 10:22:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:22:35,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:35,120 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:35,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:22:35,121 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:35,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:35,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1156407922, now seen corresponding path program 1 times [2020-10-13 10:22:35,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:35,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676175019] [2020-10-13 10:22:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:35,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:35,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-13 10:22:35,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:35,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:22:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:36,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:36,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:36,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:36,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676175019] [2020-10-13 10:22:36,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:36,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:36,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888570235] [2020-10-13 10:22:36,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:36,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:36,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:36,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:36,168 INFO L87 Difference]: Start difference. First operand 318 states and 388 transitions. Second operand 14 states. [2020-10-13 10:22:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:37,422 INFO L93 Difference]: Finished difference Result 383 states and 457 transitions. [2020-10-13 10:22:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:37,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-13 10:22:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:37,425 INFO L225 Difference]: With dead ends: 383 [2020-10-13 10:22:37,425 INFO L226 Difference]: Without dead ends: 381 [2020-10-13 10:22:37,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:22:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-13 10:22:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 323. [2020-10-13 10:22:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-13 10:22:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 394 transitions. [2020-10-13 10:22:37,454 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 394 transitions. Word has length 44 [2020-10-13 10:22:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:37,455 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 394 transitions. [2020-10-13 10:22:37,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:37,455 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 394 transitions. [2020-10-13 10:22:37,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:22:37,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:37,456 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:37,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:22:37,457 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:37,457 INFO L82 PathProgramCache]: Analyzing trace with hash 347061296, now seen corresponding path program 1 times [2020-10-13 10:22:37,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:37,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422489631] [2020-10-13 10:22:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:37,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:37,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:37,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-13 10:22:37,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:22:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:38,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:38,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422489631] [2020-10-13 10:22:38,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:38,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:38,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257181215] [2020-10-13 10:22:38,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:38,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:38,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:38,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:38,227 INFO L87 Difference]: Start difference. First operand 323 states and 394 transitions. Second operand 11 states. [2020-10-13 10:22:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:39,162 INFO L93 Difference]: Finished difference Result 367 states and 439 transitions. [2020-10-13 10:22:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:39,162 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-13 10:22:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:39,165 INFO L225 Difference]: With dead ends: 367 [2020-10-13 10:22:39,165 INFO L226 Difference]: Without dead ends: 343 [2020-10-13 10:22:39,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-13 10:22:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 323. [2020-10-13 10:22:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-13 10:22:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 393 transitions. [2020-10-13 10:22:39,192 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 393 transitions. Word has length 44 [2020-10-13 10:22:39,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:39,192 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 393 transitions. [2020-10-13 10:22:39,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 393 transitions. [2020-10-13 10:22:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:22:39,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:39,193 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:39,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:22:39,194 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:39,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1694871296, now seen corresponding path program 11 times [2020-10-13 10:22:39,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:39,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181606922] [2020-10-13 10:22:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:40,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:40,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:40,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 952 [2020-10-13 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:22:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:40,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:40,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181606922] [2020-10-13 10:22:40,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:40,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:40,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319616441] [2020-10-13 10:22:40,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:40,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:40,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:40,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:40,653 INFO L87 Difference]: Start difference. First operand 323 states and 393 transitions. Second operand 15 states. [2020-10-13 10:22:41,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:41,946 INFO L93 Difference]: Finished difference Result 378 states and 462 transitions. [2020-10-13 10:22:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:41,946 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-13 10:22:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:41,949 INFO L225 Difference]: With dead ends: 378 [2020-10-13 10:22:41,949 INFO L226 Difference]: Without dead ends: 376 [2020-10-13 10:22:41,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:41,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-13 10:22:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 323. [2020-10-13 10:22:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-13 10:22:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 393 transitions. [2020-10-13 10:22:41,976 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 393 transitions. Word has length 44 [2020-10-13 10:22:41,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:41,976 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 393 transitions. [2020-10-13 10:22:41,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 393 transitions. [2020-10-13 10:22:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:22:41,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:41,977 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:41,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:22:41,978 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:41,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1515263075, now seen corresponding path program 2 times [2020-10-13 10:22:41,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:41,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175326100] [2020-10-13 10:22:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:42,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:42,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:22:42,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-13 10:22:42,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:22:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:42,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:42,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:42,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175326100] [2020-10-13 10:22:42,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:42,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:42,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380092685] [2020-10-13 10:22:42,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:42,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:42,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:42,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:42,690 INFO L87 Difference]: Start difference. First operand 323 states and 393 transitions. Second operand 13 states. [2020-10-13 10:22:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:44,210 INFO L93 Difference]: Finished difference Result 412 states and 493 transitions. [2020-10-13 10:22:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:22:44,211 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-13 10:22:44,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:44,213 INFO L225 Difference]: With dead ends: 412 [2020-10-13 10:22:44,213 INFO L226 Difference]: Without dead ends: 377 [2020-10-13 10:22:44,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-10-13 10:22:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 341. [2020-10-13 10:22:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-13 10:22:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 417 transitions. [2020-10-13 10:22:44,238 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 417 transitions. Word has length 45 [2020-10-13 10:22:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:44,239 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 417 transitions. [2020-10-13 10:22:44,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 417 transitions. [2020-10-13 10:22:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:22:44,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:44,240 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 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 10:22:44,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:22:44,241 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash -207730088, now seen corresponding path program 1 times [2020-10-13 10:22:44,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:44,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121012501] [2020-10-13 10:22:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:44,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:44,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:22:48,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3948 [2020-10-13 10:22:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:22:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:48,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:48,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:48,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:48,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:48,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:48,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:48,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:48,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121012501] [2020-10-13 10:22:48,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:48,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:48,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820094516] [2020-10-13 10:22:48,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:48,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:48,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:48,433 INFO L87 Difference]: Start difference. First operand 341 states and 417 transitions. Second operand 12 states. [2020-10-13 10:22:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:49,395 INFO L93 Difference]: Finished difference Result 395 states and 473 transitions. [2020-10-13 10:22:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:49,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-13 10:22:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:49,397 INFO L225 Difference]: With dead ends: 395 [2020-10-13 10:22:49,397 INFO L226 Difference]: Without dead ends: 371 [2020-10-13 10:22:49,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-10-13 10:22:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 347. [2020-10-13 10:22:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-13 10:22:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 423 transitions. [2020-10-13 10:22:49,424 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 423 transitions. Word has length 45 [2020-10-13 10:22:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:49,424 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 423 transitions. [2020-10-13 10:22:49,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 423 transitions. [2020-10-13 10:22:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:22:49,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:49,425 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 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 10:22:49,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:22:49,426 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:49,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:49,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1017076714, now seen corresponding path program 2 times [2020-10-13 10:22:49,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:49,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041956477] [2020-10-13 10:22:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:50,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1087 [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:22:50,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:51,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:51,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:51,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:51,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:51,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:51,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:51,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:51,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041956477] [2020-10-13 10:22:51,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:51,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:51,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261021305] [2020-10-13 10:22:51,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:51,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:51,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:51,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:51,214 INFO L87 Difference]: Start difference. First operand 347 states and 423 transitions. Second operand 15 states. [2020-10-13 10:22:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:52,886 INFO L93 Difference]: Finished difference Result 414 states and 494 transitions. [2020-10-13 10:22:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:52,887 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-10-13 10:22:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:52,889 INFO L225 Difference]: With dead ends: 414 [2020-10-13 10:22:52,890 INFO L226 Difference]: Without dead ends: 412 [2020-10-13 10:22:52,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-10-13 10:22:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 347. [2020-10-13 10:22:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-13 10:22:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 423 transitions. [2020-10-13 10:22:52,920 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 423 transitions. Word has length 45 [2020-10-13 10:22:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:52,920 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 423 transitions. [2020-10-13 10:22:52,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 423 transitions. [2020-10-13 10:22:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:22:52,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:52,922 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:52,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:22:52,922 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1008794181, now seen corresponding path program 12 times [2020-10-13 10:22:52,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:52,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863607817] [2020-10-13 10:22:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:53,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:53,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:53,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:22:53,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-10-13 10:22:53,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:22:53,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:53,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:22:53,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:54,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:54,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:54,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:54,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:54,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:54,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863607817] [2020-10-13 10:22:54,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:54,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:54,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407430971] [2020-10-13 10:22:54,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:54,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:54,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:54,242 INFO L87 Difference]: Start difference. First operand 347 states and 423 transitions. Second operand 15 states. [2020-10-13 10:22:56,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:56,745 INFO L93 Difference]: Finished difference Result 441 states and 529 transitions. [2020-10-13 10:22:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:22:56,745 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-10-13 10:22:56,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:56,748 INFO L225 Difference]: With dead ends: 441 [2020-10-13 10:22:56,748 INFO L226 Difference]: Without dead ends: 439 [2020-10-13 10:22:56,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-13 10:22:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 357. [2020-10-13 10:22:56,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-13 10:22:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 437 transitions. [2020-10-13 10:22:56,773 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 437 transitions. Word has length 46 [2020-10-13 10:22:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:56,773 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 437 transitions. [2020-10-13 10:22:56,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 437 transitions. [2020-10-13 10:22:56,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:22:56,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:56,775 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:56,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:22:56,775 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:56,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:56,776 INFO L82 PathProgramCache]: Analyzing trace with hash -952296146, now seen corresponding path program 1 times [2020-10-13 10:22:56,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:56,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72865454] [2020-10-13 10:22:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:01,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:23:01,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:01,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4416 [2020-10-13 10:23:01,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:23:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:23:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:01,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:01,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:01,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:01,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:01,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:01,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:01,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:23:01,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72865454] [2020-10-13 10:23:01,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:01,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:01,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789710204] [2020-10-13 10:23:01,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:01,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:01,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:01,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:01,493 INFO L87 Difference]: Start difference. First operand 357 states and 437 transitions. Second operand 13 states. [2020-10-13 10:23:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:02,658 INFO L93 Difference]: Finished difference Result 409 states and 491 transitions. [2020-10-13 10:23:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:23:02,659 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-13 10:23:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:02,661 INFO L225 Difference]: With dead ends: 409 [2020-10-13 10:23:02,661 INFO L226 Difference]: Without dead ends: 397 [2020-10-13 10:23:02,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:23:02,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-13 10:23:02,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 357. [2020-10-13 10:23:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-13 10:23:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 437 transitions. [2020-10-13 10:23:02,694 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 437 transitions. Word has length 46 [2020-10-13 10:23:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:02,694 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 437 transitions. [2020-10-13 10:23:02,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 437 transitions. [2020-10-13 10:23:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:23:02,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:02,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:02,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:23:02,696 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:02,696 INFO L82 PathProgramCache]: Analyzing trace with hash 190499722, now seen corresponding path program 1 times [2020-10-13 10:23:02,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:02,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450097132] [2020-10-13 10:23:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:23:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:03,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:03,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:23:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:03,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450097132] [2020-10-13 10:23:03,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:03,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:03,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829163134] [2020-10-13 10:23:03,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:03,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:03,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:03,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:03,488 INFO L87 Difference]: Start difference. First operand 357 states and 437 transitions. Second operand 13 states. [2020-10-13 10:23:04,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:04,385 INFO L93 Difference]: Finished difference Result 422 states and 504 transitions. [2020-10-13 10:23:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:23:04,386 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-13 10:23:04,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:04,388 INFO L225 Difference]: With dead ends: 422 [2020-10-13 10:23:04,388 INFO L226 Difference]: Without dead ends: 399 [2020-10-13 10:23:04,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-13 10:23:04,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 357. [2020-10-13 10:23:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-13 10:23:04,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 437 transitions. [2020-10-13 10:23:04,413 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 437 transitions. Word has length 46 [2020-10-13 10:23:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:04,413 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 437 transitions. [2020-10-13 10:23:04,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:04,413 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 437 transitions. [2020-10-13 10:23:04,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:04,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:04,414 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:04,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:23:04,415 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1165712286, now seen corresponding path program 13 times [2020-10-13 10:23:04,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:04,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000614806] [2020-10-13 10:23:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:23:05,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:05,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:05,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:05,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000614806] [2020-10-13 10:23:05,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:05,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:05,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580523161] [2020-10-13 10:23:05,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:05,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:05,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:05,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:05,949 INFO L87 Difference]: Start difference. First operand 357 states and 437 transitions. Second operand 15 states. [2020-10-13 10:23:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:07,148 INFO L93 Difference]: Finished difference Result 456 states and 553 transitions. [2020-10-13 10:23:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:23:07,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-13 10:23:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:07,151 INFO L225 Difference]: With dead ends: 456 [2020-10-13 10:23:07,152 INFO L226 Difference]: Without dead ends: 421 [2020-10-13 10:23:07,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-13 10:23:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 373. [2020-10-13 10:23:07,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-13 10:23:07,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 457 transitions. [2020-10-13 10:23:07,177 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 457 transitions. Word has length 47 [2020-10-13 10:23:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:07,177 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 457 transitions. [2020-10-13 10:23:07,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 457 transitions. [2020-10-13 10:23:07,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:07,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:07,178 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:07,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:23:07,179 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:07,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:07,179 INFO L82 PathProgramCache]: Analyzing trace with hash 537544934, now seen corresponding path program 14 times [2020-10-13 10:23:07,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:07,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494860554] [2020-10-13 10:23:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:08,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:08,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:08,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1114 [2020-10-13 10:23:08,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:08,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:08,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:08,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:08,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:08,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:08,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:08,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:08,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:08,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:08,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,928 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:08,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494860554] [2020-10-13 10:23:08,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:08,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:08,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629346425] [2020-10-13 10:23:08,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:08,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:08,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:08,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:08,929 INFO L87 Difference]: Start difference. First operand 373 states and 457 transitions. Second operand 16 states. [2020-10-13 10:23:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:11,243 INFO L93 Difference]: Finished difference Result 455 states and 555 transitions. [2020-10-13 10:23:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:11,243 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2020-10-13 10:23:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:11,246 INFO L225 Difference]: With dead ends: 455 [2020-10-13 10:23:11,246 INFO L226 Difference]: Without dead ends: 453 [2020-10-13 10:23:11,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:23:11,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-10-13 10:23:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 373. [2020-10-13 10:23:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2020-10-13 10:23:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 457 transitions. [2020-10-13 10:23:11,270 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 457 transitions. Word has length 47 [2020-10-13 10:23:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:11,270 INFO L479 AbstractCegarLoop]: Abstraction has 373 states and 457 transitions. [2020-10-13 10:23:11,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 457 transitions. [2020-10-13 10:23:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:11,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:11,271 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 10:23:11,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:23:11,272 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:11,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1969833056, now seen corresponding path program 1 times [2020-10-13 10:23:11,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:11,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560001692] [2020-10-13 10:23:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:11,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:11,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:16,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:16,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:23:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4834 [2020-10-13 10:23:16,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:23:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:16,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:23:16,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:16,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:16,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:16,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:23:16,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560001692] [2020-10-13 10:23:16,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:16,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:23:16,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401717582] [2020-10-13 10:23:16,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:23:16,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:16,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:23:16,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:23:16,255 INFO L87 Difference]: Start difference. First operand 373 states and 457 transitions. Second operand 10 states. [2020-10-13 10:23:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:16,885 INFO L93 Difference]: Finished difference Result 423 states and 509 transitions. [2020-10-13 10:23:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:23:16,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-13 10:23:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:16,888 INFO L225 Difference]: With dead ends: 423 [2020-10-13 10:23:16,888 INFO L226 Difference]: Without dead ends: 394 [2020-10-13 10:23:16,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-13 10:23:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 379. [2020-10-13 10:23:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-13 10:23:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 463 transitions. [2020-10-13 10:23:16,927 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 463 transitions. Word has length 47 [2020-10-13 10:23:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:16,927 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 463 transitions. [2020-10-13 10:23:16,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:23:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 463 transitions. [2020-10-13 10:23:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:16,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:16,929 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 10:23:16,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:23:16,929 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:16,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:16,930 INFO L82 PathProgramCache]: Analyzing trace with hash 736786338, now seen corresponding path program 1 times [2020-10-13 10:23:16,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:16,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275580983] [2020-10-13 10:23:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:17,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:18,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:18,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:18,881 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 10:23:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:18,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:19,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275580983] [2020-10-13 10:23:19,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:19,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:19,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829353942] [2020-10-13 10:23:19,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:19,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:19,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:19,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:19,014 INFO L87 Difference]: Start difference. First operand 379 states and 463 transitions. Second operand 15 states. [2020-10-13 10:23:19,955 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-13 10:23:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:21,094 INFO L93 Difference]: Finished difference Result 650 states and 779 transitions. [2020-10-13 10:23:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:23:21,094 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-10-13 10:23:21,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:21,097 INFO L225 Difference]: With dead ends: 650 [2020-10-13 10:23:21,097 INFO L226 Difference]: Without dead ends: 648 [2020-10-13 10:23:21,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-13 10:23:21,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 468. [2020-10-13 10:23:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-13 10:23:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 580 transitions. [2020-10-13 10:23:21,136 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 580 transitions. Word has length 47 [2020-10-13 10:23:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:21,136 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 580 transitions. [2020-10-13 10:23:21,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 580 transitions. [2020-10-13 10:23:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:21,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:21,138 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 10:23:21,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:23:21,138 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1527459996, now seen corresponding path program 1 times [2020-10-13 10:23:21,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:21,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846712797] [2020-10-13 10:23:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:23:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:22,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:22,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:22,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:22,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:22,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:23:22,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846712797] [2020-10-13 10:23:22,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:22,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:23:22,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752474584] [2020-10-13 10:23:22,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:23:22,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:22,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:23:22,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:23:22,598 INFO L87 Difference]: Start difference. First operand 468 states and 580 transitions. Second operand 10 states. [2020-10-13 10:23:23,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:23,080 INFO L93 Difference]: Finished difference Result 530 states and 646 transitions. [2020-10-13 10:23:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:23:23,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-13 10:23:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:23,083 INFO L225 Difference]: With dead ends: 530 [2020-10-13 10:23:23,083 INFO L226 Difference]: Without dead ends: 477 [2020-10-13 10:23:23,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-13 10:23:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 462. [2020-10-13 10:23:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-13 10:23:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 572 transitions. [2020-10-13 10:23:23,126 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 572 transitions. Word has length 47 [2020-10-13 10:23:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:23,126 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 572 transitions. [2020-10-13 10:23:23,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:23:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 572 transitions. [2020-10-13 10:23:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:23:23,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:23,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:23:23,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:23:23,128 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:23,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1201398660, now seen corresponding path program 1 times [2020-10-13 10:23:23,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:23,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033859817] [2020-10-13 10:23:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:23,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:23,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:23:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:23,744 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2020-10-13 10:23:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:23,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:23,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:23,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033859817] [2020-10-13 10:23:23,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:23,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:23,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180238823] [2020-10-13 10:23:23,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:23,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:23,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:23,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:23,905 INFO L87 Difference]: Start difference. First operand 462 states and 572 transitions. Second operand 13 states. [2020-10-13 10:23:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:24,614 INFO L93 Difference]: Finished difference Result 504 states and 614 transitions. [2020-10-13 10:23:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:23:24,614 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-13 10:23:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:24,618 INFO L225 Difference]: With dead ends: 504 [2020-10-13 10:23:24,618 INFO L226 Difference]: Without dead ends: 502 [2020-10-13 10:23:24,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-13 10:23:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 485. [2020-10-13 10:23:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2020-10-13 10:23:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 595 transitions. [2020-10-13 10:23:24,659 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 595 transitions. Word has length 48 [2020-10-13 10:23:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:24,659 INFO L479 AbstractCegarLoop]: Abstraction has 485 states and 595 transitions. [2020-10-13 10:23:24,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 595 transitions. [2020-10-13 10:23:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:24,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:24,661 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:24,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:23:24,661 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:24,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1344357107, now seen corresponding path program 15 times [2020-10-13 10:23:24,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:24,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539380050] [2020-10-13 10:23:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:25,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:26,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:26,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:26,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1416 [2020-10-13 10:23:26,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:26,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:26,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:26,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:23:26,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:26,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:26,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:26,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:26,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:26,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:26,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:26,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:26,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:26,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539380050] [2020-10-13 10:23:26,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:26,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:23:26,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965834595] [2020-10-13 10:23:26,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:23:26,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:26,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:23:26,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:23:26,481 INFO L87 Difference]: Start difference. First operand 485 states and 595 transitions. Second operand 14 states. [2020-10-13 10:23:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:27,950 INFO L93 Difference]: Finished difference Result 590 states and 712 transitions. [2020-10-13 10:23:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:23:27,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-13 10:23:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:27,954 INFO L225 Difference]: With dead ends: 590 [2020-10-13 10:23:27,954 INFO L226 Difference]: Without dead ends: 549 [2020-10-13 10:23:27,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-10-13 10:23:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 488. [2020-10-13 10:23:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-13 10:23:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 599 transitions. [2020-10-13 10:23:28,000 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 599 transitions. Word has length 49 [2020-10-13 10:23:28,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:28,001 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 599 transitions. [2020-10-13 10:23:28,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:23:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 599 transitions. [2020-10-13 10:23:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:28,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:28,002 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 1, 1, 1, 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 10:23:28,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:23:28,003 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:28,003 INFO L82 PathProgramCache]: Analyzing trace with hash -448861587, now seen corresponding path program 1 times [2020-10-13 10:23:28,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:28,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206301939] [2020-10-13 10:23:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:28,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:28,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:33,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:23:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 10:23:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:23:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:33,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:33,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:33,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:33,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:33,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:33,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:33,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:33,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:33,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206301939] [2020-10-13 10:23:33,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:33,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:33,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41979680] [2020-10-13 10:23:33,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:33,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:33,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:33,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:33,288 INFO L87 Difference]: Start difference. First operand 488 states and 599 transitions. Second operand 13 states. [2020-10-13 10:23:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:34,203 INFO L93 Difference]: Finished difference Result 560 states and 679 transitions. [2020-10-13 10:23:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:23:34,203 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-13 10:23:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:34,206 INFO L225 Difference]: With dead ends: 560 [2020-10-13 10:23:34,206 INFO L226 Difference]: Without dead ends: 502 [2020-10-13 10:23:34,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-13 10:23:34,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 482. [2020-10-13 10:23:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-10-13 10:23:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 586 transitions. [2020-10-13 10:23:34,243 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 586 transitions. Word has length 49 [2020-10-13 10:23:34,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:34,243 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 586 transitions. [2020-10-13 10:23:34,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:34,243 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 586 transitions. [2020-10-13 10:23:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:34,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:34,245 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 1, 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 10:23:34,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 10:23:34,245 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:34,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:34,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1045021423, now seen corresponding path program 2 times [2020-10-13 10:23:34,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:34,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088904503] [2020-10-13 10:23:34,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:34,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:23:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:39,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:39,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:39,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088904503] [2020-10-13 10:23:39,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:39,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:39,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883079748] [2020-10-13 10:23:39,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:39,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:39,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:39,542 INFO L87 Difference]: Start difference. First operand 482 states and 586 transitions. Second operand 13 states. [2020-10-13 10:23:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:40,597 INFO L93 Difference]: Finished difference Result 537 states and 646 transitions. [2020-10-13 10:23:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:23:40,597 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-13 10:23:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:40,599 INFO L225 Difference]: With dead ends: 537 [2020-10-13 10:23:40,599 INFO L226 Difference]: Without dead ends: 498 [2020-10-13 10:23:40,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-13 10:23:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 464. [2020-10-13 10:23:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-13 10:23:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 561 transitions. [2020-10-13 10:23:40,637 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 561 transitions. Word has length 49 [2020-10-13 10:23:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:40,638 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 561 transitions. [2020-10-13 10:23:40,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 561 transitions. [2020-10-13 10:23:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:40,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:40,639 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 1, 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 10:23:40,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 10:23:40,639 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash 235674797, now seen corresponding path program 3 times [2020-10-13 10:23:40,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:40,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965467661] [2020-10-13 10:23:40,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:42,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:42,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1763 [2020-10-13 10:23:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:23:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:43,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965467661] [2020-10-13 10:23:43,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:43,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:43,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106215233] [2020-10-13 10:23:43,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:43,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:43,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:43,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:43,383 INFO L87 Difference]: Start difference. First operand 464 states and 561 transitions. Second operand 16 states. [2020-10-13 10:23:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:45,832 INFO L93 Difference]: Finished difference Result 535 states and 636 transitions. [2020-10-13 10:23:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:23:45,833 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-13 10:23:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:45,836 INFO L225 Difference]: With dead ends: 535 [2020-10-13 10:23:45,836 INFO L226 Difference]: Without dead ends: 533 [2020-10-13 10:23:45,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:23:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-10-13 10:23:45,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 461. [2020-10-13 10:23:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-13 10:23:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 558 transitions. [2020-10-13 10:23:45,877 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 558 transitions. Word has length 49 [2020-10-13 10:23:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:45,878 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 558 transitions. [2020-10-13 10:23:45,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:45,878 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 558 transitions. [2020-10-13 10:23:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:23:45,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:45,879 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:45,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 10:23:45,879 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1127762182, now seen corresponding path program 16 times [2020-10-13 10:23:45,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:45,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417963013] [2020-10-13 10:23:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:46,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:46,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:23:46,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-10-13 10:23:46,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:46,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:23:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:47,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:47,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:47,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:47,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:47,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:47,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417963013] [2020-10-13 10:23:47,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:47,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:47,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663523526] [2020-10-13 10:23:47,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:47,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:47,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:47,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:47,494 INFO L87 Difference]: Start difference. First operand 461 states and 558 transitions. Second operand 16 states. [2020-10-13 10:23:48,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:48,979 INFO L93 Difference]: Finished difference Result 561 states and 671 transitions. [2020-10-13 10:23:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:23:48,980 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-13 10:23:48,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:48,983 INFO L225 Difference]: With dead ends: 561 [2020-10-13 10:23:48,983 INFO L226 Difference]: Without dead ends: 526 [2020-10-13 10:23:48,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-10-13 10:23:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 483. [2020-10-13 10:23:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-10-13 10:23:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 584 transitions. [2020-10-13 10:23:49,017 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 584 transitions. Word has length 50 [2020-10-13 10:23:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:49,017 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 584 transitions. [2020-10-13 10:23:49,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 584 transitions. [2020-10-13 10:23:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:23:49,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:49,019 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:49,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 10:23:49,019 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:49,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:49,019 INFO L82 PathProgramCache]: Analyzing trace with hash -219033852, now seen corresponding path program 17 times [2020-10-13 10:23:49,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:49,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564003799] [2020-10-13 10:23:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:50,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:23:50,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:50,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1244 [2020-10-13 10:23:50,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:23:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:50,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:23:50,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:50,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:50,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:50,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:50,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564003799] [2020-10-13 10:23:50,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:50,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:50,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839249238] [2020-10-13 10:23:50,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:50,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:50,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:50,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:50,961 INFO L87 Difference]: Start difference. First operand 483 states and 584 transitions. Second operand 17 states. [2020-10-13 10:23:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:53,168 INFO L93 Difference]: Finished difference Result 642 states and 780 transitions. [2020-10-13 10:23:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:23:53,169 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-13 10:23:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:53,172 INFO L225 Difference]: With dead ends: 642 [2020-10-13 10:23:53,173 INFO L226 Difference]: Without dead ends: 640 [2020-10-13 10:23:53,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:23:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-13 10:23:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 548. [2020-10-13 10:23:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-10-13 10:23:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 667 transitions. [2020-10-13 10:23:53,226 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 667 transitions. Word has length 50 [2020-10-13 10:23:53,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:53,226 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 667 transitions. [2020-10-13 10:23:53,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:53,226 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 667 transitions. [2020-10-13 10:23:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:23:53,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:53,227 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 10:23:53,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 10:23:53,228 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash -144795881, now seen corresponding path program 1 times [2020-10-13 10:23:53,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:53,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952452572] [2020-10-13 10:23:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:54,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:54,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:23:54,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 862 [2020-10-13 10:23:54,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:23:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:54,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:54,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952452572] [2020-10-13 10:23:54,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:54,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:54,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116258190] [2020-10-13 10:23:54,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:54,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:54,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:54,616 INFO L87 Difference]: Start difference. First operand 548 states and 667 transitions. Second operand 15 states. [2020-10-13 10:23:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:56,248 INFO L93 Difference]: Finished difference Result 663 states and 803 transitions. [2020-10-13 10:23:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:23:56,249 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-13 10:23:56,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:56,252 INFO L225 Difference]: With dead ends: 663 [2020-10-13 10:23:56,252 INFO L226 Difference]: Without dead ends: 640 [2020-10-13 10:23:56,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-13 10:23:56,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 541. [2020-10-13 10:23:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-10-13 10:23:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 660 transitions. [2020-10-13 10:23:56,291 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 660 transitions. Word has length 50 [2020-10-13 10:23:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:56,291 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 660 transitions. [2020-10-13 10:23:56,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 660 transitions. [2020-10-13 10:23:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:23:56,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:56,292 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 10:23:56,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 10:23:56,293 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:56,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:56,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1539307333, now seen corresponding path program 2 times [2020-10-13 10:23:56,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:56,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112921242] [2020-10-13 10:23:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:56,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:23:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:57,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:57,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:57,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:57,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:57,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:57,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:57,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:57,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:57,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112921242] [2020-10-13 10:23:57,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:57,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:57,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590479165] [2020-10-13 10:23:57,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:57,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:57,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:57,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:57,872 INFO L87 Difference]: Start difference. First operand 541 states and 660 transitions. Second operand 16 states. [2020-10-13 10:24:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:00,495 INFO L93 Difference]: Finished difference Result 610 states and 734 transitions. [2020-10-13 10:24:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:00,496 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2020-10-13 10:24:00,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:00,499 INFO L225 Difference]: With dead ends: 610 [2020-10-13 10:24:00,499 INFO L226 Difference]: Without dead ends: 608 [2020-10-13 10:24:00,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:24:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-10-13 10:24:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 546. [2020-10-13 10:24:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-10-13 10:24:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 666 transitions. [2020-10-13 10:24:00,539 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 666 transitions. Word has length 51 [2020-10-13 10:24:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:00,539 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 666 transitions. [2020-10-13 10:24:00,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:24:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 666 transitions. [2020-10-13 10:24:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:24:00,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:00,540 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 10:24:00,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 10:24:00,541 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:00,541 INFO L82 PathProgramCache]: Analyzing trace with hash 729960707, now seen corresponding path program 2 times [2020-10-13 10:24:00,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:00,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231001740] [2020-10-13 10:24:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:00,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:01,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:01,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:24:01,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:01,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-13 10:24:01,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:24:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:01,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:01,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:01,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:01,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:01,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231001740] [2020-10-13 10:24:01,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:01,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:24:01,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154216977] [2020-10-13 10:24:01,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:24:01,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:24:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:24:01,945 INFO L87 Difference]: Start difference. First operand 546 states and 666 transitions. Second operand 13 states. [2020-10-13 10:24:03,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:03,703 INFO L93 Difference]: Finished difference Result 599 states and 720 transitions. [2020-10-13 10:24:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:24:03,704 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-13 10:24:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:03,707 INFO L225 Difference]: With dead ends: 599 [2020-10-13 10:24:03,707 INFO L226 Difference]: Without dead ends: 575 [2020-10-13 10:24:03,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-13 10:24:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 538. [2020-10-13 10:24:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-13 10:24:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 657 transitions. [2020-10-13 10:24:03,746 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 657 transitions. Word has length 51 [2020-10-13 10:24:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:03,746 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 657 transitions. [2020-10-13 10:24:03,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:24:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 657 transitions. [2020-10-13 10:24:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:03,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:03,748 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:03,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 10:24:03,748 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:03,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:03,748 INFO L82 PathProgramCache]: Analyzing trace with hash -782046426, now seen corresponding path program 3 times [2020-10-13 10:24:03,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:03,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172859276] [2020-10-13 10:24:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:03,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:24:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:04,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:04,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:04,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 3 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:04,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172859276] [2020-10-13 10:24:04,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:04,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:04,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703002544] [2020-10-13 10:24:04,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:04,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:04,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:04,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:04,934 INFO L87 Difference]: Start difference. First operand 538 states and 657 transitions. Second operand 15 states. [2020-10-13 10:24:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:07,584 INFO L93 Difference]: Finished difference Result 652 states and 786 transitions. [2020-10-13 10:24:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 10:24:07,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-13 10:24:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:07,588 INFO L225 Difference]: With dead ends: 652 [2020-10-13 10:24:07,588 INFO L226 Difference]: Without dead ends: 617 [2020-10-13 10:24:07,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 10:24:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2020-10-13 10:24:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 565. [2020-10-13 10:24:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-10-13 10:24:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 694 transitions. [2020-10-13 10:24:07,630 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 694 transitions. Word has length 52 [2020-10-13 10:24:07,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:07,630 INFO L479 AbstractCegarLoop]: Abstraction has 565 states and 694 transitions. [2020-10-13 10:24:07,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:07,630 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 694 transitions. [2020-10-13 10:24:07,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:07,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:07,631 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 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 10:24:07,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 10:24:07,632 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:07,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:07,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1789927707, now seen corresponding path program 3 times [2020-10-13 10:24:07,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:07,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048178105] [2020-10-13 10:24:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:08,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:12,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:12,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:12,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:12,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4637 [2020-10-13 10:24:12,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:24:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:12,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:24:12,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:12,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:12,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:12,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:12,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:12,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:12,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:12,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048178105] [2020-10-13 10:24:12,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:12,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:24:12,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535505397] [2020-10-13 10:24:12,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:24:12,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:12,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:24:12,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:24:12,680 INFO L87 Difference]: Start difference. First operand 565 states and 694 transitions. Second operand 14 states. [2020-10-13 10:24:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:14,118 INFO L93 Difference]: Finished difference Result 613 states and 744 transitions. [2020-10-13 10:24:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:24:14,119 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-13 10:24:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:14,122 INFO L225 Difference]: With dead ends: 613 [2020-10-13 10:24:14,122 INFO L226 Difference]: Without dead ends: 589 [2020-10-13 10:24:14,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-10-13 10:24:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 571. [2020-10-13 10:24:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-13 10:24:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 700 transitions. [2020-10-13 10:24:14,162 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 700 transitions. Word has length 52 [2020-10-13 10:24:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:14,163 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 700 transitions. [2020-10-13 10:24:14,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:24:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 700 transitions. [2020-10-13 10:24:14,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:14,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:14,164 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 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 10:24:14,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 10:24:14,164 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:14,164 INFO L82 PathProgramCache]: Analyzing trace with hash 980581081, now seen corresponding path program 4 times [2020-10-13 10:24:14,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:14,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189783436] [2020-10-13 10:24:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:14,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:16,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:16,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:16,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-10-13 10:24:16,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:24:16,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:16,746 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-10-13 10:24:16,932 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-13 10:24:17,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:17,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:17,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:17,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189783436] [2020-10-13 10:24:17,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:17,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:17,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173728595] [2020-10-13 10:24:17,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:17,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:17,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:17,617 INFO L87 Difference]: Start difference. First operand 571 states and 700 transitions. Second operand 17 states. [2020-10-13 10:24:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:21,434 INFO L93 Difference]: Finished difference Result 668 states and 802 transitions. [2020-10-13 10:24:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:24:21,435 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-10-13 10:24:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:21,439 INFO L225 Difference]: With dead ends: 668 [2020-10-13 10:24:21,439 INFO L226 Difference]: Without dead ends: 666 [2020-10-13 10:24:21,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 10:24:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2020-10-13 10:24:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 568. [2020-10-13 10:24:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-13 10:24:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 697 transitions. [2020-10-13 10:24:21,481 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 697 transitions. Word has length 52 [2020-10-13 10:24:21,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:21,481 INFO L479 AbstractCegarLoop]: Abstraction has 568 states and 697 transitions. [2020-10-13 10:24:21,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 697 transitions. [2020-10-13 10:24:21,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:21,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:21,483 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:21,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 10:24:21,483 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:21,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1136366691, now seen corresponding path program 1 times [2020-10-13 10:24:21,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:21,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113476047] [2020-10-13 10:24:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:21,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:21,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:21,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:24,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:24,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:24,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3433 [2020-10-13 10:24:24,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:24,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:24,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:24:24,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:25,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:25,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:25,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:24:25,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113476047] [2020-10-13 10:24:25,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:25,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:24:25,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312662695] [2020-10-13 10:24:25,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:24:25,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:25,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:24:25,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:24:25,324 INFO L87 Difference]: Start difference. First operand 568 states and 697 transitions. Second operand 14 states. [2020-10-13 10:24:26,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:26,489 INFO L93 Difference]: Finished difference Result 650 states and 782 transitions. [2020-10-13 10:24:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:24:26,490 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-13 10:24:26,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:26,494 INFO L225 Difference]: With dead ends: 650 [2020-10-13 10:24:26,494 INFO L226 Difference]: Without dead ends: 638 [2020-10-13 10:24:26,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-13 10:24:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 576. [2020-10-13 10:24:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-13 10:24:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 704 transitions. [2020-10-13 10:24:26,539 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 704 transitions. Word has length 52 [2020-10-13 10:24:26,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:26,540 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 704 transitions. [2020-10-13 10:24:26,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:24:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 704 transitions. [2020-10-13 10:24:26,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:26,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:26,541 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:26,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 10:24:26,542 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:26,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:26,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1282297459, now seen corresponding path program 1 times [2020-10-13 10:24:26,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:26,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778509169] [2020-10-13 10:24:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:27,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:27,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:27,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-10-13 10:24:27,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:27,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:24:27,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:27,639 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2020-10-13 10:24:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:27,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:27,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:27,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:27,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:27,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:27,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778509169] [2020-10-13 10:24:27,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:27,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:27,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934022270] [2020-10-13 10:24:27,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:27,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:27,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:27,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:27,758 INFO L87 Difference]: Start difference. First operand 576 states and 704 transitions. Second operand 15 states. [2020-10-13 10:24:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:28,814 INFO L93 Difference]: Finished difference Result 623 states and 751 transitions. [2020-10-13 10:24:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:24:28,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-13 10:24:28,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:28,819 INFO L225 Difference]: With dead ends: 623 [2020-10-13 10:24:28,819 INFO L226 Difference]: Without dead ends: 621 [2020-10-13 10:24:28,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:24:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-13 10:24:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 576. [2020-10-13 10:24:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-10-13 10:24:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 704 transitions. [2020-10-13 10:24:28,867 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 704 transitions. Word has length 52 [2020-10-13 10:24:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:28,867 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 704 transitions. [2020-10-13 10:24:28,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:28,867 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 704 transitions. [2020-10-13 10:24:28,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:24:28,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:28,869 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:28,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 10:24:28,869 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1685893602, now seen corresponding path program 18 times [2020-10-13 10:24:28,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:28,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690680666] [2020-10-13 10:24:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:30,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 10:24:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:30,925 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-13 10:24:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:31,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:31,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:31,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:31,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:31,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690680666] [2020-10-13 10:24:31,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:31,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:31,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045904987] [2020-10-13 10:24:31,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:31,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:31,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:31,275 INFO L87 Difference]: Start difference. First operand 576 states and 704 transitions. Second operand 17 states. [2020-10-13 10:24:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:34,702 INFO L93 Difference]: Finished difference Result 680 states and 821 transitions. [2020-10-13 10:24:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:24:34,702 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-10-13 10:24:34,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:34,706 INFO L225 Difference]: With dead ends: 680 [2020-10-13 10:24:34,706 INFO L226 Difference]: Without dead ends: 678 [2020-10-13 10:24:34,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:24:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-13 10:24:34,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 586. [2020-10-13 10:24:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-10-13 10:24:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 718 transitions. [2020-10-13 10:24:34,752 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 718 transitions. Word has length 53 [2020-10-13 10:24:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:34,752 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 718 transitions. [2020-10-13 10:24:34,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 718 transitions. [2020-10-13 10:24:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:24:34,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:34,753 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 10:24:34,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 10:24:34,753 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:34,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1941817665, now seen corresponding path program 2 times [2020-10-13 10:24:34,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:34,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667546343] [2020-10-13 10:24:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:36,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 10:24:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:24:39,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:24:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:24:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:40,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:40,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:40,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:40,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:40,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:40,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:40,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:24:40,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667546343] [2020-10-13 10:24:40,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:40,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:40,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008734269] [2020-10-13 10:24:40,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:40,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:40,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:40,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:40,498 INFO L87 Difference]: Start difference. First operand 586 states and 718 transitions. Second operand 15 states. [2020-10-13 10:24:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:42,222 INFO L93 Difference]: Finished difference Result 654 states and 790 transitions. [2020-10-13 10:24:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:24:42,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-13 10:24:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:42,225 INFO L225 Difference]: With dead ends: 654 [2020-10-13 10:24:42,225 INFO L226 Difference]: Without dead ends: 642 [2020-10-13 10:24:42,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:24:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-13 10:24:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 589. [2020-10-13 10:24:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-13 10:24:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 721 transitions. [2020-10-13 10:24:42,272 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 721 transitions. Word has length 53 [2020-10-13 10:24:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:42,272 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 721 transitions. [2020-10-13 10:24:42,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 721 transitions. [2020-10-13 10:24:42,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:24:42,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:42,274 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:42,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 10:24:42,274 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:42,274 INFO L82 PathProgramCache]: Analyzing trace with hash 576253649, now seen corresponding path program 19 times [2020-10-13 10:24:42,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:42,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307541801] [2020-10-13 10:24:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:43,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:24:43,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:43,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-13 10:24:43,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:43,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:43,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:24:43,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:44,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:44,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:44,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:44,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:44,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:44,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:44,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307541801] [2020-10-13 10:24:44,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:44,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:44,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567592428] [2020-10-13 10:24:44,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:44,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:44,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:44,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:44,822 INFO L87 Difference]: Start difference. First operand 589 states and 721 transitions. Second operand 17 states. [2020-10-13 10:24:46,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:46,739 INFO L93 Difference]: Finished difference Result 691 states and 840 transitions. [2020-10-13 10:24:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:24:46,739 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-13 10:24:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:46,742 INFO L225 Difference]: With dead ends: 691 [2020-10-13 10:24:46,742 INFO L226 Difference]: Without dead ends: 656 [2020-10-13 10:24:46,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-10-13 10:24:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 608. [2020-10-13 10:24:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-10-13 10:24:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 744 transitions. [2020-10-13 10:24:46,792 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 744 transitions. Word has length 54 [2020-10-13 10:24:46,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:46,792 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 744 transitions. [2020-10-13 10:24:46,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 744 transitions. [2020-10-13 10:24:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:24:46,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:46,793 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:46,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 10:24:46,793 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:46,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:46,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1568459725, now seen corresponding path program 20 times [2020-10-13 10:24:46,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:46,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000944258] [2020-10-13 10:24:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:47,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:48,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:48,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:24:48,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-13 10:24:48,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:24:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:24:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:49,347 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-13 10:24:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:49,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:49,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:49,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:49,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:49,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:49,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:49,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:49,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:49,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000944258] [2020-10-13 10:24:49,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:49,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:24:49,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000554258] [2020-10-13 10:24:49,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:24:49,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:49,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:24:49,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:24:49,795 INFO L87 Difference]: Start difference. First operand 608 states and 744 transitions. Second operand 18 states. [2020-10-13 10:24:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:53,475 INFO L93 Difference]: Finished difference Result 786 states and 963 transitions. [2020-10-13 10:24:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:53,476 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-13 10:24:53,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:53,479 INFO L225 Difference]: With dead ends: 786 [2020-10-13 10:24:53,479 INFO L226 Difference]: Without dead ends: 784 [2020-10-13 10:24:53,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:24:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-10-13 10:24:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 687. [2020-10-13 10:24:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-10-13 10:24:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 847 transitions. [2020-10-13 10:24:53,535 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 847 transitions. Word has length 54 [2020-10-13 10:24:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:53,536 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 847 transitions. [2020-10-13 10:24:53,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:24:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 847 transitions. [2020-10-13 10:24:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:24:53,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:53,537 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 10:24:53,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 10:24:53,538 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:53,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:53,538 INFO L82 PathProgramCache]: Analyzing trace with hash 260001263, now seen corresponding path program 2 times [2020-10-13 10:24:53,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:53,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672902725] [2020-10-13 10:24:53,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:55,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:24:55,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:55,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1666 [2020-10-13 10:24:55,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:55,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:24:55,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:55,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:55,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:55,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:55,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:55,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672902725] [2020-10-13 10:24:55,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:55,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:55,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241841832] [2020-10-13 10:24:55,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:55,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:55,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:55,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:55,873 INFO L87 Difference]: Start difference. First operand 687 states and 847 transitions. Second operand 17 states. [2020-10-13 10:24:58,325 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2020-10-13 10:24:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:58,888 INFO L93 Difference]: Finished difference Result 883 states and 1076 transitions. [2020-10-13 10:24:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:24:58,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-13 10:24:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:58,892 INFO L225 Difference]: With dead ends: 883 [2020-10-13 10:24:58,892 INFO L226 Difference]: Without dead ends: 881 [2020-10-13 10:24:58,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:24:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-10-13 10:24:58,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 739. [2020-10-13 10:24:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-10-13 10:24:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 914 transitions. [2020-10-13 10:24:58,956 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 914 transitions. Word has length 54 [2020-10-13 10:24:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:58,956 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 914 transitions. [2020-10-13 10:24:58,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 914 transitions. [2020-10-13 10:24:58,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:24:58,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:58,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:58,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-13 10:24:58,958 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:58,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:58,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1113375563, now seen corresponding path program 1 times [2020-10-13 10:24:58,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:58,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425459248] [2020-10-13 10:24:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:24:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:59,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:59,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:59,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:59,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:59,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:59,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:59,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:59,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425459248] [2020-10-13 10:24:59,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:59,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:24:59,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233022781] [2020-10-13 10:24:59,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:24:59,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:59,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:24:59,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:24:59,778 INFO L87 Difference]: Start difference. First operand 739 states and 914 transitions. Second operand 14 states. [2020-10-13 10:25:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:00,767 INFO L93 Difference]: Finished difference Result 790 states and 965 transitions. [2020-10-13 10:25:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:25:00,768 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-13 10:25:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:00,773 INFO L225 Difference]: With dead ends: 790 [2020-10-13 10:25:00,773 INFO L226 Difference]: Without dead ends: 788 [2020-10-13 10:25:00,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:25:00,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-10-13 10:25:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 739. [2020-10-13 10:25:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-10-13 10:25:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 914 transitions. [2020-10-13 10:25:00,836 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 914 transitions. Word has length 54 [2020-10-13 10:25:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:00,837 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 914 transitions. [2020-10-13 10:25:00,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:25:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 914 transitions. [2020-10-13 10:25:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:25:00,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:00,838 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 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 10:25:00,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-13 10:25:00,838 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:00,838 INFO L82 PathProgramCache]: Analyzing trace with hash 280203499, now seen corresponding path program 2 times [2020-10-13 10:25:00,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:00,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110932675] [2020-10-13 10:25:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:01,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:04,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:25:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:25:04,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3581 [2020-10-13 10:25:04,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:25:04,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:25:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:04,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:04,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:04,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:04,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:04,740 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 10:25:04,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110932675] [2020-10-13 10:25:04,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:04,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:25:04,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923348235] [2020-10-13 10:25:04,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:25:04,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:04,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:25:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:25:04,742 INFO L87 Difference]: Start difference. First operand 739 states and 914 transitions. Second operand 11 states. [2020-10-13 10:25:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:05,463 INFO L93 Difference]: Finished difference Result 834 states and 1016 transitions. [2020-10-13 10:25:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:25:05,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2020-10-13 10:25:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:05,468 INFO L225 Difference]: With dead ends: 834 [2020-10-13 10:25:05,468 INFO L226 Difference]: Without dead ends: 756 [2020-10-13 10:25:05,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:25:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-13 10:25:05,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 733. [2020-10-13 10:25:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-13 10:25:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 905 transitions. [2020-10-13 10:25:05,531 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 905 transitions. Word has length 54 [2020-10-13 10:25:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:05,531 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 905 transitions. [2020-10-13 10:25:05,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:25:05,531 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 905 transitions. [2020-10-13 10:25:05,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:25:05,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:05,533 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:05,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-13 10:25:05,533 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:05,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1070509875, now seen corresponding path program 1 times [2020-10-13 10:25:05,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:05,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279800203] [2020-10-13 10:25:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:06,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:07,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:10,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:10,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:25:10,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:25:10,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 10:25:10,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:10,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:25:10,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:10,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:25:10,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:11,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:11,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:11,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:11,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:11,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:11,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:11,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:11,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:25:11,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279800203] [2020-10-13 10:25:11,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:11,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:25:11,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230892837] [2020-10-13 10:25:11,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:25:11,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:11,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:25:11,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:25:11,210 INFO L87 Difference]: Start difference. First operand 733 states and 905 transitions. Second operand 15 states.