/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/list-simple/sll2n_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:42:15,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:42:15,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:42:15,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:42:15,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:42:15,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:42:15,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:42:15,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:42:15,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:42:15,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:42:15,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:42:15,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:42:15,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:42:15,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:42:15,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:42:15,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:42:15,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:42:15,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:42:15,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:42:15,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:42:15,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:42:15,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:42:15,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:42:15,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:42:15,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:42:15,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:42:15,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:42:15,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:42:15,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:42:15,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:42:15,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:42:15,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:42:15,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:42:15,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:42:15,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:42:15,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:42:15,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:42:15,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:42:15,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:42:15,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:42:15,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:42:15,741 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 [2020-10-14 23:42:15,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:42:15,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:42:15,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:42:15,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:42:15,766 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:42:15,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:42:15,766 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:42:15,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:42:15,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:42:15,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:42:15,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:42:15,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:42:15,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:42:15,768 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:42:15,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:42:15,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:42:15,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:42:15,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:42:15,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:42:15,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:42:15,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:42:15,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:42:15,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:42:15,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:42:15,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:42:15,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:42:15,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:42:15,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:42:15,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:42:15,771 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:42:16,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:42:16,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:42:16,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:42:16,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:42:16,165 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:42:16,166 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_equal.i [2020-10-14 23:42:16,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ffa7402/a82e58e2584d41989696faa28bcaf2ac/FLAG12b05469a [2020-10-14 23:42:16,825 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:42:16,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_prepend_equal.i [2020-10-14 23:42:16,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ffa7402/a82e58e2584d41989696faa28bcaf2ac/FLAG12b05469a [2020-10-14 23:42:17,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c6ffa7402/a82e58e2584d41989696faa28bcaf2ac [2020-10-14 23:42:17,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:42:17,126 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:42:17,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:42:17,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:42:17,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:42:17,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587e17fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17, skipping insertion in model container [2020-10-14 23:42:17,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:42:17,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:42:17,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:42:17,681 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:42:17,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:42:17,795 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:42:17,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17 WrapperNode [2020-10-14 23:42:17,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:42:17,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:42:17,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:42:17,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:42:17,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (1/1) ... [2020-10-14 23:42:17,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:42:17,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:42:17,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:42:17,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:42:17,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (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 [2020-10-14 23:42:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:42:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:42:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:42:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:42:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:42:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:42:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 23:42:17,937 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 23:42:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2020-10-14 23:42:17,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:42:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:42:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:42:17,938 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:42:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:42:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:42:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:42:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:42:17,939 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:42:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:42:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:42:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:42:17,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:42:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:42:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:42:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:42:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:42:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:42:17,941 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:42:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:42:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:42:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:42:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:42:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:42:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:42:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:42:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:42:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:42:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:42:17,943 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:42:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:42:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:42:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:42:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:42:17,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:42:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:42:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:42:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:42:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:42:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:42:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:42:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:42:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:42:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:42:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:42:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:42:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:42:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:42:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:42:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:42:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:42:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:42:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:42:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:42:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:42:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:42:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:42:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:42:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:42:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:42:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:42:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:42:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:42:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:42:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:42:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:42:17,949 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:42:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:42:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:42:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:42:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:42:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:42:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:42:17,950 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:42:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:42:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:42:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:42:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:42:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:42:17,951 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:42:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:42:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:42:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:42:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:42:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:42:17,952 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:42:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:42:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:42:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:42:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:42:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:42:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:42:17,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:42:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:42:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:42:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:42:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:42:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:42:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:42:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 23:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 23:42:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:42:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:42:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2020-10-14 23:42:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:42:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:42:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:42:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:42:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:42:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:42:18,284 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:42:18,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:42:18,527 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:42:18,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:42:18 BoogieIcfgContainer [2020-10-14 23:42:18,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:42:18,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:42:18,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:42:18,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:42:18,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:42:17" (1/3) ... [2020-10-14 23:42:18,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb0555e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:42:18, skipping insertion in model container [2020-10-14 23:42:18,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:17" (2/3) ... [2020-10-14 23:42:18,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb0555e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:42:18, skipping insertion in model container [2020-10-14 23:42:18,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:42:18" (3/3) ... [2020-10-14 23:42:18,541 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_equal.i [2020-10-14 23:42:18,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:42:18,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:42:18,578 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:42:18,605 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:42:18,606 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:42:18,606 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:42:18,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:42:18,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:42:18,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:42:18,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:42:18,607 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:42:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-14 23:42:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:42:18,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:18,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:18,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1741018156, now seen corresponding path program 1 times [2020-10-14 23:42:18,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:18,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597187649] [2020-10-14 23:42:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:42:19,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:19,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-14 23:42:19,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:42:19,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:19,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:42:19,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:42:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:19,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:19,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:42:19,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:19,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:19,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:19,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 23:42:19,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:19,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:19,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 23:42:20,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:20,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:42:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:42:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:20,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:20,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:20,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:20,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:42:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:20,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597187649] [2020-10-14 23:42:20,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:20,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 23:42:20,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654044147] [2020-10-14 23:42:20,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:42:20,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:42:20,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:42:20,385 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 13 states. [2020-10-14 23:42:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:21,188 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2020-10-14 23:42:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:42:21,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2020-10-14 23:42:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:21,201 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:42:21,201 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 23:42:21,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:42:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 23:42:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-14 23:42:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 23:42:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-14 23:42:21,256 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 28 [2020-10-14 23:42:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:21,257 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-14 23:42:21,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:42:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-14 23:42:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 23:42:21,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:21,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:21,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:42:21,261 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:21,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1529573970, now seen corresponding path program 1 times [2020-10-14 23:42:21,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:21,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421457375] [2020-10-14 23:42:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:22,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:22,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:42:22,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:22,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-14 23:42:22,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:22,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:42:22,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 23:42:22,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:42:22,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:22,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:22,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:22,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:42:22,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:22,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:22,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:22,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:22,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:22,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:22,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:22,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:42:22,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:22,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:22,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:22,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:22,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:22,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:22,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:22,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 23:42:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:22,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:22,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:42:22,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:22,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:22,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:22,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:22,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:42:22,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:22,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:22,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421457375] [2020-10-14 23:42:22,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:22,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 23:42:22,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002390923] [2020-10-14 23:42:22,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:42:22,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:22,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:42:22,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:42:22,722 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 11 states. [2020-10-14 23:42:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:23,007 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-14 23:42:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:42:23,008 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-14 23:42:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:23,010 INFO L225 Difference]: With dead ends: 43 [2020-10-14 23:42:23,012 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 23:42:23,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:42:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 23:42:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-14 23:42:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-14 23:42:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-14 23:42:23,036 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 28 [2020-10-14 23:42:23,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:23,037 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-14 23:42:23,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:42:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-14 23:42:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:42:23,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:23,040 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] [2020-10-14 23:42:23,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:42:23,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:23,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1043425015, now seen corresponding path program 1 times [2020-10-14 23:42:23,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:23,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135696393] [2020-10-14 23:42:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:42:24,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:24,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-10-14 23:42:24,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:42:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:42:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:42:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:24,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:24,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:24,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:24,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:24,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:24,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:24,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:24,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:42:24,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:24,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:24,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:24,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 23:42:24,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:24,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:42:24,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:42:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:29,040 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 221 DAG size of output: 126 [2020-10-14 23:42:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:29,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:29,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 23:42:29,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:29,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:29,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135696393] [2020-10-14 23:42:29,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:29,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 23:42:29,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032965004] [2020-10-14 23:42:29,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:42:29,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:29,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:42:29,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:42:29,365 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 18 states. [2020-10-14 23:42:30,903 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 23:42:32,842 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 23:42:34,402 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 159 [2020-10-14 23:42:36,147 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 23:42:37,706 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 152 [2020-10-14 23:42:37,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:37,896 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-10-14 23:42:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:42:37,899 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 30 [2020-10-14 23:42:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:37,901 INFO L225 Difference]: With dead ends: 57 [2020-10-14 23:42:37,901 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:42:37,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:42:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:42:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-14 23:42:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 23:42:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-14 23:42:37,914 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 30 [2020-10-14 23:42:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:37,915 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-14 23:42:37,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:42:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-14 23:42:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:42:37,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:37,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:37,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:42:37,917 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:37,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:37,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1043423341, now seen corresponding path program 1 times [2020-10-14 23:42:37,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:37,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916246528] [2020-10-14 23:42:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:37,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:37,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:38,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:42:38,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:38,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 23:42:38,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:38,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:38,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:38,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:38,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:38,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:38,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:38,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:38,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:38,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:38,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:38,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:38,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:38,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:38,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:42:38,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:38,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:38,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:38,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:38,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:38,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:38,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:42:38,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:38,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:42:38,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:38,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:38,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:38,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:38,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:42:38,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:38,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:38,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:38,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:42:38,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916246528] [2020-10-14 23:42:38,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:38,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:42:38,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276105208] [2020-10-14 23:42:38,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:42:38,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:38,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:42:38,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:42:38,130 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 7 states. [2020-10-14 23:42:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:38,348 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-10-14 23:42:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:42:38,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-14 23:42:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:38,350 INFO L225 Difference]: With dead ends: 61 [2020-10-14 23:42:38,350 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 23:42:38,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:42:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 23:42:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-10-14 23:42:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 23:42:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-14 23:42:38,364 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 30 [2020-10-14 23:42:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:38,364 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-14 23:42:38,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:42:38,365 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-14 23:42:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:42:38,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:38,367 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] [2020-10-14 23:42:38,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:42:38,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:38,368 INFO L82 PathProgramCache]: Analyzing trace with hash 965876786, now seen corresponding path program 1 times [2020-10-14 23:42:38,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:38,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758460678] [2020-10-14 23:42:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:42:39,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1262 [2020-10-14 23:42:39,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:42:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:42:39,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:39,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:39,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:39,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:39,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:39,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:40,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:40,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-14 23:42:40,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:42:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:40,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:42:40,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:40,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:42:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:40,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:40,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:42:40,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 23:42:40,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:42:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:42:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:42,301 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2020-10-14 23:43:02,532 WARN L193 SmtUtils]: Spent 19.21 s on a formula simplification. DAG size of input: 437 DAG size of output: 226 [2020-10-14 23:43:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:43:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:03,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 23:43:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:03,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:43:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:03,887 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-14 23:43:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:43:03,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758460678] [2020-10-14 23:43:03,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:43:03,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:43:03,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652740213] [2020-10-14 23:43:03,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:43:03,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:03,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:43:03,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:43:03,921 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 23 states. [2020-10-14 23:43:10,673 WARN L193 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 222 [2020-10-14 23:43:17,967 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 243 [2020-10-14 23:43:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:27,745 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-10-14 23:43:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:43:27,751 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 39 [2020-10-14 23:43:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:27,753 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:43:27,753 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:43:27,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:43:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:43:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2020-10-14 23:43:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:43:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-14 23:43:27,777 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 39 [2020-10-14 23:43:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:27,778 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-14 23:43:27,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:43:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-14 23:43:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:43:27,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:27,780 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:43:27,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:43:27,780 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash 965875112, now seen corresponding path program 1 times [2020-10-14 23:43:27,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:27,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782488973] [2020-10-14 23:43:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:27,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:29,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:29,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:43:29,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:29,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-14 23:43:29,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:29,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:29,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:43:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:43:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:43:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:30,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:43:30,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:30,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:43:30,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:30,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:30,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:30,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:43:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:30,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:30,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:43:30,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:30,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 23:43:30,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:30,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:43:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:43:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:43:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:30,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:30,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:30,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:30,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:43:30,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:30,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:30,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:43:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:30,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:43:30,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:30,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:43:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:30,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:30,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:43:30,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 23:43:30,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:30,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:43:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:43:30,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:43:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:30,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:30,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:30,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:30,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 23:43:30,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:30,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:30,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:43:30,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:30,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:43:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:43:31,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782488973] [2020-10-14 23:43:31,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:43:31,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:43:31,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594656357] [2020-10-14 23:43:31,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:43:31,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:31,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:43:31,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:43:31,217 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 21 states. [2020-10-14 23:43:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:33,086 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-14 23:43:33,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:43:33,090 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 39 [2020-10-14 23:43:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:33,091 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:43:33,091 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:43:33,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:43:33,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:43:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-14 23:43:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:43:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-14 23:43:33,104 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 39 [2020-10-14 23:43:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:33,104 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-14 23:43:33,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:43:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-14 23:43:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:43:33,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:33,106 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] [2020-10-14 23:43:33,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:43:33,106 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:33,107 INFO L82 PathProgramCache]: Analyzing trace with hash 494701773, now seen corresponding path program 2 times [2020-10-14 23:43:33,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:33,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865334580] [2020-10-14 23:43:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:33,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:33,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:36,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:43:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3113 [2020-10-14 23:43:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:36,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 23:43:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:43:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:43:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:36,476 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-10-14 23:43:36,622 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-10-14 23:43:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:37,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:37,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:43:37,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:37,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:43:37,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:37,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:37,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:37,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:43:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:37,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:37,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:37,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:43:37,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:37,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 23:43:37,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:37,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:43:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:37,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:43:37,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:43:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:37,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:37,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:37,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:37,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:43:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:37,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:43:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:43:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:43:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:37,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:43:37,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:37,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 23:43:37,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:37,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:43:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:37,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:43:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:50,996 WARN L193 SmtUtils]: Spent 11.65 s on a formula simplification. DAG size of input: 327 DAG size of output: 217 [2020-10-14 23:43:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:43:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:52,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:52,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:52,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:43:52,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:52,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:52,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:43:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:52,349 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-14 23:43:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:43:52,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865334580] [2020-10-14 23:43:52,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:43:52,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:43:52,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400119876] [2020-10-14 23:43:52,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:43:52,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:52,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:43:52,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:43:52,374 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 24 states. [2020-10-14 23:43:57,400 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 219 [2020-10-14 23:44:02,591 WARN L193 SmtUtils]: Spent 3.57 s on a formula simplification that was a NOOP. DAG size: 226 [2020-10-14 23:44:05,646 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-14 23:44:06,178 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-14 23:44:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:06,916 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-10-14 23:44:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:44:06,916 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 41 [2020-10-14 23:44:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:06,917 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:44:06,917 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 23:44:06,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:44:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 23:44:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-14 23:44:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:44:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-10-14 23:44:06,930 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 41 [2020-10-14 23:44:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:06,930 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-10-14 23:44:06,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:44:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-10-14 23:44:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:44:06,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:06,932 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] [2020-10-14 23:44:06,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:44:06,932 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:06,933 INFO L82 PathProgramCache]: Analyzing trace with hash 494700099, now seen corresponding path program 2 times [2020-10-14 23:44:06,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:06,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310448108] [2020-10-14 23:44:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:06,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:44:07,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:07,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 23:44:07,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:44:07,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:07,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:44:07,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:07,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:07,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:07,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:44:07,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:44:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:44:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:07,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:44:07,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:44:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:44:07,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:44:07,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:44:07,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:07,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:44:07,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:07,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:44:07,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310448108] [2020-10-14 23:44:07,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:07,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:44:07,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565669776] [2020-10-14 23:44:07,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:44:07,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:07,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:44:07,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:44:07,628 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 12 states. [2020-10-14 23:44:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:08,136 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-14 23:44:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:44:08,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-14 23:44:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:08,139 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:44:08,139 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:44:08,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:44:08,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:44:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-14 23:44:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:44:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-14 23:44:08,154 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 41 [2020-10-14 23:44:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:08,155 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-14 23:44:08,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:44:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-14 23:44:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:44:08,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:08,157 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:44:08,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:44:08,157 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:08,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1142561111, now seen corresponding path program 3 times [2020-10-14 23:44:08,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:08,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604335132] [2020-10-14 23:44:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:08,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:08,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:44:08,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-10-14 23:44:08,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:08,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 23:44:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:44:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:09,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 23:44:09,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:44:09,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:44:09,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:09,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:44:09,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:09,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:09,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:09,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:44:09,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:44:09,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:09,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:44:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:09,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:09,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:44:09,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:09,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:09,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:10,130 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-10-14 23:44:10,536 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-14 23:44:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:10,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:10,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:10,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:10,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:44:10,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:10,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:10,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:10,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:11,254 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-14 23:44:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:44:11,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604335132] [2020-10-14 23:44:11,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:11,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:44:11,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080271308] [2020-10-14 23:44:11,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:44:11,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:11,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:44:11,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:44:11,267 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 23 states. [2020-10-14 23:44:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:13,288 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-14 23:44:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:44:13,290 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 48 [2020-10-14 23:44:13,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:13,291 INFO L225 Difference]: With dead ends: 44 [2020-10-14 23:44:13,292 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:44:13,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=123, Invalid=1209, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:44:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:44:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-14 23:44:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 23:44:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-14 23:44:13,301 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 48 [2020-10-14 23:44:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:13,301 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-14 23:44:13,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:44:13,302 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-14 23:44:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:44:13,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:13,303 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:44:13,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:44:13,303 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:13,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1510353742, now seen corresponding path program 4 times [2020-10-14 23:44:13,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:13,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19079133] [2020-10-14 23:44:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:15,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:44:15,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2381 [2020-10-14 23:44:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:15,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:44:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:44:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:16,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:16,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:16,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:16,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:16,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:16,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:16,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:16,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:16,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:16,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:16,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:16,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:16,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-14 23:44:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:16,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:44:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:16,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:44:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:16,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:16,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:16,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:16,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:16,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:16,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:44:16,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:16,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:44:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:16,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:16,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:17,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:44:17,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:17,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:44:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:17,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:44:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:17,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:17,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:44:17,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 23:44:17,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:17,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:44:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:17,978 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-14 23:44:19,773 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 124 DAG size of output: 103 [2020-10-14 23:44:19,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:19,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:19,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:19,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:44:19,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:19,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:20,726 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 39 [2020-10-14 23:44:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:44:20,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19079133] [2020-10-14 23:44:20,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:20,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 23:44:20,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934377770] [2020-10-14 23:44:20,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 23:44:20,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:20,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 23:44:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:44:20,749 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 28 states. [2020-10-14 23:44:21,580 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-14 23:44:24,401 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-14 23:44:24,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:24,473 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-14 23:44:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:44:24,475 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 50 [2020-10-14 23:44:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:24,476 INFO L225 Difference]: With dead ends: 52 [2020-10-14 23:44:24,476 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:44:24,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:44:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:44:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-10-14 23:44:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:44:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-14 23:44:24,485 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 50 [2020-10-14 23:44:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:24,486 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-14 23:44:24,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 23:44:24,486 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-14 23:44:24,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:44:24,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:24,487 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:44:24,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:44:24,488 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:24,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1510355416, now seen corresponding path program 3 times [2020-10-14 23:44:24,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:24,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933335338] [2020-10-14 23:44:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:24,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:26,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 23:44:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:26,289 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-14 23:44:26,459 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-14 23:44:26,584 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-14 23:44:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:26,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:26,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:26,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:26,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:26,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:26,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:44:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:27,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:27,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:27,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:27,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:27,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:27,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:44:27,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:27,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:44:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:44:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:27,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:27,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:44:27,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 23:44:27,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:27,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:44:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:28,425 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-14 23:44:30,124 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-10-14 23:44:30,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:30,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:44:30,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:30,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:44:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:30,922 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-14 23:44:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:44:30,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933335338] [2020-10-14 23:44:30,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:30,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:44:30,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174797521] [2020-10-14 23:44:30,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:44:30,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:30,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:44:30,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:44:30,941 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 27 states. [2020-10-14 23:44:31,848 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-14 23:44:32,881 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-14 23:44:33,490 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-14 23:44:33,770 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-14 23:44:34,036 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 23:44:34,426 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 23:44:34,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:34,903 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-14 23:44:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:44:34,905 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2020-10-14 23:44:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:34,906 INFO L225 Difference]: With dead ends: 50 [2020-10-14 23:44:34,906 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:44:34,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:44:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:44:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-14 23:44:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:44:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-14 23:44:34,916 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 50 [2020-10-14 23:44:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:34,917 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-14 23:44:34,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:44:34,917 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-14 23:44:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:44:34,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:34,918 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-14 23:44:34,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:44:34,919 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:34,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash 249046349, now seen corresponding path program 5 times [2020-10-14 23:44:34,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:34,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569793038] [2020-10-14 23:44:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:35,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:36,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:44:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:37,035 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-14 23:44:37,323 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2020-10-14 23:44:37,696 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2020-10-14 23:44:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:37,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:37,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:37,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:37,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:37,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:37,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:37,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:38,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:38,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:38,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:44:38,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:38,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:38,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:38,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:38,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:44:38,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:38,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:44:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:38,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:38,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:38,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:44:38,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:38,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:38,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:39,320 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-14 23:44:39,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:44:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:39,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:39,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:44:39,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 23:44:39,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:39,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:44:39,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:44:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:40,593 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2020-10-14 23:45:12,481 WARN L193 SmtUtils]: Spent 30.60 s on a formula simplification. DAG size of input: 558 DAG size of output: 334 [2020-10-14 23:45:14,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:45:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:14,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:14,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:14,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:45:14,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:14,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:45:14,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:14,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:45:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:45:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:45:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:14,500 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-10-14 23:45:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:45:14,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569793038] [2020-10-14 23:45:14,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:45:14,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:45:14,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939383712] [2020-10-14 23:45:14,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:45:14,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:14,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:45:14,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=798, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:45:14,537 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 30 states. [2020-10-14 23:45:32,755 WARN L193 SmtUtils]: Spent 17.23 s on a formula simplification. DAG size of input: 327 DAG size of output: 326 [2020-10-14 23:45:33,996 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-14 23:45:49,491 WARN L193 SmtUtils]: Spent 14.74 s on a formula simplification. DAG size of input: 336 DAG size of output: 329 [2020-10-14 23:45:50,864 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-14 23:45:54,331 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-14 23:45:54,748 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-14 23:45:55,114 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-14 23:45:55,508 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-14 23:45:55,887 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-14 23:45:56,282 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-14 23:45:56,553 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-10-14 23:45:57,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:57,238 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-10-14 23:45:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:45:57,244 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 52 [2020-10-14 23:45:57,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:57,245 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:45:57,246 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:45:57,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 73.4s TimeCoverageRelationStatistics Valid=188, Invalid=2068, Unknown=0, NotChecked=0, Total=2256 [2020-10-14 23:45:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:45:57,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2020-10-14 23:45:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:45:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-14 23:45:57,262 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 52 [2020-10-14 23:45:57,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:57,262 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-14 23:45:57,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:45:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-14 23:45:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:45:57,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:57,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-14 23:45:57,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:45:57,264 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:57,264 INFO L82 PathProgramCache]: Analyzing trace with hash 249044675, now seen corresponding path program 4 times [2020-10-14 23:45:57,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:57,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250021686] [2020-10-14 23:45:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:57,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:57,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:45:57,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:45:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-14 23:45:57,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:57,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:45:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:45:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:45:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:57,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:45:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:57,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:57,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:45:57,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:57,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:45:57,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:57,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:57,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:57,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:57,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:45:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:57,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:58,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:58,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:45:58,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:45:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 23:45:58,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:58,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:45:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:45:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:58,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:58,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:58,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:45:58,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:58,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:45:58,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:58,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:58,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:58,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:45:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:58,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:58,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:58,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:45:58,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:58,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:45:58,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:58,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:58,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:58,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:45:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:58,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:58,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:45:58,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:45:58,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:58,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:45:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:58,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:45:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:45:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:58,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:45:58,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:45:58,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:45:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:45:58,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:45:58,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:45:58,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:45:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:45:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:45:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:45:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 23:45:58,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250021686] [2020-10-14 23:45:58,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:45:58,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:45:58,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052812786] [2020-10-14 23:45:58,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:45:58,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:45:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:45:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:45:58,161 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 9 states. [2020-10-14 23:45:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:45:58,801 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-14 23:45:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:45:58,806 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-14 23:45:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:45:58,807 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:45:58,807 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:45:58,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:45:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:45:58,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-14 23:45:58,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:45:58,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-14 23:45:58,824 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 52 [2020-10-14 23:45:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:45:58,824 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-14 23:45:58,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:45:58,824 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-14 23:45:58,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 23:45:58,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:45:58,825 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-14 23:45:58,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:45:58,826 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:45:58,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:45:58,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1828809800, now seen corresponding path program 6 times [2020-10-14 23:45:58,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:45:58,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447017318] [2020-10-14 23:45:58,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:45:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:45:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:45:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:03,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:03,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:46:03,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:46:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 23:46:03,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:03,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:46:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:46:03,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 23:46:03,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:46:04,164 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-14 23:46:04,413 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-14 23:46:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:46:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:04,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:04,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:46:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:46:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:04,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:46:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:46:04,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:46:04,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:05,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:46:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:05,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:05,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:46:05,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:05,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 23:46:05,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:05,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:46:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:46:05,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:46:05,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:06,219 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-14 23:46:06,568 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-14 23:46:06,924 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-14 23:46:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:46:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:06,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:06,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:46:06,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:06,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:46:06,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:06,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:46:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:46:06,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:46:06,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:46:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:07,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:07,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:46:07,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 23:46:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:07,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:46:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:46:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:46:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:07,736 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-10-14 23:46:07,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:46:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:07,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:07,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:07,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:46:07,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:46:07,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:07,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:46:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:46:07,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:46:07,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:08,126 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-10-14 23:46:08,842 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-10-14 23:46:08,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:46:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:08,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:46:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 23:46:08,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:08,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:46:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:46:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:46:08,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:09,936 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2020-10-14 23:46:12,476 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 126 DAG size of output: 105 [2020-10-14 23:46:12,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:46:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:12,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:46:12,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:46:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:46:13,442 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-10-14 23:46:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:46:13,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447017318] [2020-10-14 23:46:13,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:46:13,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 23:46:13,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481061819] [2020-10-14 23:46:13,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 23:46:13,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:46:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 23:46:13,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=1052, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:46:13,477 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 34 states. [2020-10-14 23:46:15,186 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-14 23:46:16,588 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-14 23:46:16,953 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-14 23:46:17,615 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-14 23:46:18,938 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-14 23:46:20,683 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-14 23:46:21,264 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 23:46:22,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:46:22,420 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-14 23:46:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:46:22,424 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 61 [2020-10-14 23:46:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:46:22,425 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:46:22,425 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:46:22,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=197, Invalid=2559, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:46:22,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:46:22,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-14 23:46:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 23:46:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-14 23:46:22,435 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 61 [2020-10-14 23:46:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:46:22,436 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-14 23:46:22,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 23:46:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-14 23:46:22,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 23:46:22,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:46:22,436 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-14 23:46:22,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:46:22,437 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:46:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:46:22,437 INFO L82 PathProgramCache]: Analyzing trace with hash 844640099, now seen corresponding path program 7 times [2020-10-14 23:46:22,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:46:22,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211126902] [2020-10-14 23:46:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:46:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:46:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:22,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:46:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking...