/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:38:13,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:38:13,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:38:13,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:38:13,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:38:13,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:38:13,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:38:13,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:38:13,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:38:13,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:38:13,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:38:13,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:38:13,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:38:13,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:38:13,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:38:13,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:38:13,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:38:13,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:38:13,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:38:13,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:38:13,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:38:13,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:38:13,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:38:13,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:38:13,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:38:13,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:38:13,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:38:13,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:38:13,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:38:13,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:38:13,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:38:13,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:38:13,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:38:13,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:38:13,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:38:13,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:38:13,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:38:13,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:38:13,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:38:13,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:38:13,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:38:13,765 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 [2020-10-12 15:38:13,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:38:13,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:38:13,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:38:13,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:38:13,787 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:38:13,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:38:13,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:38:13,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:38:13,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:38:13,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:38:13,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:38:13,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:38:13,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:38:13,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:38:13,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:38:13,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:38:13,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:38:13,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:38:13,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:38:13,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:38:13,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:38:13,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:38:13,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:38:13,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:38:13,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:38:13,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:38:13,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:38:13,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:38:13,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:38:13,792 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:38:14,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:38:14,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:38:14,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:38:14,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:38:14,108 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:38:14,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-2.i [2020-10-12 15:38:14,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d554be8f/23a80da8578a4b668eb441a747b49bac/FLAG74e2a1c48 [2020-10-12 15:38:14,658 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:38:14,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-token-2.i [2020-10-12 15:38:14,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d554be8f/23a80da8578a4b668eb441a747b49bac/FLAG74e2a1c48 [2020-10-12 15:38:14,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d554be8f/23a80da8578a4b668eb441a747b49bac [2020-10-12 15:38:14,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:38:14,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:38:14,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:14,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:38:14,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:38:14,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a87fceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:14, skipping insertion in model container [2020-10-12 15:38:14,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:14" (1/1) ... [2020-10-12 15:38:14,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:38:15,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:38:15,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:15,467 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:38:15,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:15,612 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:38:15,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15 WrapperNode [2020-10-12 15:38:15,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:15,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:38:15,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:38:15,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:38:15,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... [2020-10-12 15:38:15,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... [2020-10-12 15:38:15,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... [2020-10-12 15:38:15,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... [2020-10-12 15:38:15,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... [2020-10-12 15:38:15,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... [2020-10-12 15:38:15,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... [2020-10-12 15:38:15,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:38:15,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:38:15,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:38:15,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:38:15,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:38:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:38:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:38:15,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:38:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:38:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:38:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:38:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:38:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:38:15,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:38:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:38:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:38:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:38:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:38:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:38:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:38:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:38:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:38:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:38:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:38:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:38:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:38:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:38:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:38:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:38:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:38:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:38:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:38:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:38:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:38:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:38:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:38:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:38:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:38:15,744 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:38:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:38:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:38:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:38:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:38:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:38:15,745 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:38:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:38:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:38:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:38:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:38:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:38:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:38:15,746 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:38:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:38:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:38:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:38:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:38:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:38:15,747 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:38:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:38:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:38:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:38:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:38:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:38:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:38:15,748 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:38:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:38:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:38:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:38:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:38:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:38:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:38:15,749 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:38:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:38:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:38:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:38:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:38:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:38:15,750 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:38:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:38:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:38:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:38:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:38:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:38:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:38:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:38:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:38:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:38:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:38:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:38:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:38:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:38:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:38:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:38:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:38:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:38:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:38:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:38:15,753 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:38:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:38:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:38:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:38:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:38:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:38:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:38:15,754 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:38:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:38:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:38:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:38:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:38:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:38:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:38:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:38:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:38:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:38:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:38:16,269 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:38:16,269 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-12 15:38:16,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:16 BoogieIcfgContainer [2020-10-12 15:38:16,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:38:16,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:38:16,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:38:16,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:38:16,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:38:14" (1/3) ... [2020-10-12 15:38:16,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e79d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:16, skipping insertion in model container [2020-10-12 15:38:16,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:15" (2/3) ... [2020-10-12 15:38:16,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e79d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:16, skipping insertion in model container [2020-10-12 15:38:16,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:16" (3/3) ... [2020-10-12 15:38:16,283 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-2.i [2020-10-12 15:38:16,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:38:16,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-12 15:38:16,313 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-12 15:38:16,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:38:16,335 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:38:16,335 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:38:16,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:38:16,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:38:16,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:38:16,336 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:38:16,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:38:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-12 15:38:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:38:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:16,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:16,361 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:16,367 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-10-12 15:38:16,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:16,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485914250] [2020-10-12 15:38:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:16,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:16,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:16,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:38:16,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:16,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-12 15:38:16,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:38:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:16,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:38:16,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:38:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:17,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:17,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:17,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:38:17,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:17,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485914250] [2020-10-12 15:38:17,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:17,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:38:17,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299907361] [2020-10-12 15:38:17,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:38:17,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:17,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:38:17,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:38:17,086 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-12 15:38:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:17,296 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-10-12 15:38:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:38:17,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 15:38:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:17,309 INFO L225 Difference]: With dead ends: 122 [2020-10-12 15:38:17,309 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 15:38:17,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 15:38:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-10-12 15:38:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 15:38:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-12 15:38:17,358 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 10 [2020-10-12 15:38:17,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:17,358 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-12 15:38:17,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:38:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-12 15:38:17,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:38:17,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:17,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:17,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:38:17,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:17,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:17,361 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-10-12 15:38:17,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:17,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376105144] [2020-10-12 15:38:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:17,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:38:17,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-12 15:38:17,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 15:38:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:38:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:17,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:17,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:17,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:17,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:17,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:17,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376105144] [2020-10-12 15:38:17,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:17,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:38:17,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813315405] [2020-10-12 15:38:17,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:38:17,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:17,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:38:17,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:17,718 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-10-12 15:38:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:17,835 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-12 15:38:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:38:17,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-12 15:38:17,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:17,837 INFO L225 Difference]: With dead ends: 39 [2020-10-12 15:38:17,837 INFO L226 Difference]: Without dead ends: 37 [2020-10-12 15:38:17,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:38:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-12 15:38:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-12 15:38:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 15:38:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-12 15:38:17,847 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 16 [2020-10-12 15:38:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:17,848 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-12 15:38:17,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:38:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-12 15:38:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 15:38:17,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:17,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:17,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:38:17,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:17,850 INFO L82 PathProgramCache]: Analyzing trace with hash -409960037, now seen corresponding path program 1 times [2020-10-12 15:38:17,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:17,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426404031] [2020-10-12 15:38:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:17,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:38:17,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:17,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:38:17,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:17,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:18,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:18,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:18,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:18,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:18,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:18,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426404031] [2020-10-12 15:38:18,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:18,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:38:18,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12156479] [2020-10-12 15:38:18,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:38:18,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:18,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:38:18,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:18,029 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2020-10-12 15:38:18,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:18,161 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-10-12 15:38:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:38:18,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-12 15:38:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:18,162 INFO L225 Difference]: With dead ends: 72 [2020-10-12 15:38:18,163 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 15:38:18,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:38:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 15:38:18,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-12 15:38:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-12 15:38:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-12 15:38:18,173 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2020-10-12 15:38:18,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:18,173 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-12 15:38:18,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:38:18,174 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-12 15:38:18,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:38:18,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:18,175 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] [2020-10-12 15:38:18,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:38:18,175 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:18,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:18,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1407314597, now seen corresponding path program 1 times [2020-10-12 15:38:18,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:18,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692427470] [2020-10-12 15:38:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:18,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:38:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 15:38:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:38:18,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:18,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:18,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:18,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:18,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692427470] [2020-10-12 15:38:18,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:18,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:38:18,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312581472] [2020-10-12 15:38:18,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:38:18,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:38:18,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:38:18,413 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2020-10-12 15:38:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:18,603 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-10-12 15:38:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:38:18,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 15:38:18,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:18,605 INFO L225 Difference]: With dead ends: 54 [2020-10-12 15:38:18,605 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 15:38:18,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 15:38:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-12 15:38:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 15:38:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-12 15:38:18,619 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2020-10-12 15:38:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:18,621 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-12 15:38:18,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:38:18,621 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-12 15:38:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:38:18,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:18,625 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:18,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:38:18,626 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:18,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1742673852, now seen corresponding path program 1 times [2020-10-12 15:38:18,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:18,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567498288] [2020-10-12 15:38:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 15:38:18,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:18,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 15:38:18,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:18,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:38:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:18,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:18,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:18,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:18,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:18,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:18,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567498288] [2020-10-12 15:38:18,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:18,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:38:18,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664329973] [2020-10-12 15:38:18,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:38:18,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:18,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:38:18,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:38:18,976 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 7 states. [2020-10-12 15:38:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:19,265 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-10-12 15:38:19,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:38:19,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 15:38:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:19,267 INFO L225 Difference]: With dead ends: 62 [2020-10-12 15:38:19,268 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 15:38:19,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 15:38:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-12 15:38:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 15:38:19,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-12 15:38:19,276 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 20 [2020-10-12 15:38:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:19,276 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-12 15:38:19,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:38:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-12 15:38:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:38:19,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:19,278 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] [2020-10-12 15:38:19,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:38:19,279 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash 995688324, now seen corresponding path program 1 times [2020-10-12 15:38:19,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:19,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883272124] [2020-10-12 15:38:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:19,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:19,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:38:19,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:19,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-12 15:38:19,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:19,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 15:38:19,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:38:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:19,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883272124] [2020-10-12 15:38:19,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:19,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 15:38:19,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409734939] [2020-10-12 15:38:19,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:38:19,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:19,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:38:19,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:38:19,922 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2020-10-12 15:38:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:20,210 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-10-12 15:38:20,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:38:20,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-12 15:38:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:20,212 INFO L225 Difference]: With dead ends: 83 [2020-10-12 15:38:20,212 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 15:38:20,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 15:38:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-10-12 15:38:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 15:38:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-12 15:38:20,226 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 24 [2020-10-12 15:38:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:20,226 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-12 15:38:20,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:38:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-12 15:38:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:38:20,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:20,230 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] [2020-10-12 15:38:20,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:38:20,230 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:20,230 INFO L82 PathProgramCache]: Analyzing trace with hash 961492076, now seen corresponding path program 1 times [2020-10-12 15:38:20,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:20,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853115272] [2020-10-12 15:38:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:20,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:38:20,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:20,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-12 15:38:20,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:20,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:38:20,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:38:20,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:20,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:20,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:20,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:20,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:20,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:20,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:20,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:20,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:20,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853115272] [2020-10-12 15:38:20,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:20,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 15:38:20,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920644886] [2020-10-12 15:38:20,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:38:20,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:20,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:38:20,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:38:20,755 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 8 states. [2020-10-12 15:38:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:20,991 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-12 15:38:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:38:20,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-12 15:38:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:20,993 INFO L225 Difference]: With dead ends: 93 [2020-10-12 15:38:20,993 INFO L226 Difference]: Without dead ends: 89 [2020-10-12 15:38:20,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-12 15:38:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2020-10-12 15:38:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 15:38:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2020-10-12 15:38:21,003 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 26 [2020-10-12 15:38:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:21,003 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2020-10-12 15:38:21,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:38:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2020-10-12 15:38:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:38:21,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:21,004 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] [2020-10-12 15:38:21,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:38:21,005 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:21,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1379228979, now seen corresponding path program 1 times [2020-10-12 15:38:21,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:21,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056730921] [2020-10-12 15:38:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:38:21,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 15:38:21,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:21,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:38:21,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:21,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:21,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:21,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:21,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:21,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:21,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056730921] [2020-10-12 15:38:21,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:21,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:38:21,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38854493] [2020-10-12 15:38:21,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:38:21,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:21,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:38:21,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:38:21,234 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand 8 states. [2020-10-12 15:38:21,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:21,466 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-12 15:38:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:21,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-12 15:38:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:21,468 INFO L225 Difference]: With dead ends: 107 [2020-10-12 15:38:21,468 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 15:38:21,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 15:38:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2020-10-12 15:38:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 15:38:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2020-10-12 15:38:21,477 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 26 [2020-10-12 15:38:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:21,478 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2020-10-12 15:38:21,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:38:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2020-10-12 15:38:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:38:21,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:21,479 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] [2020-10-12 15:38:21,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:38:21,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:21,480 INFO L82 PathProgramCache]: Analyzing trace with hash 622688967, now seen corresponding path program 1 times [2020-10-12 15:38:21,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:21,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892867067] [2020-10-12 15:38:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:38:22,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:38:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-10-12 15:38:22,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:38:22,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:38:22,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:22,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:22,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:22,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:22,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:22,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:22,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:22,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892867067] [2020-10-12 15:38:22,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:22,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:22,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286434385] [2020-10-12 15:38:22,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:22,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:22,790 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 10 states. [2020-10-12 15:38:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:23,103 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-10-12 15:38:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:38:23,104 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-12 15:38:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:23,105 INFO L225 Difference]: With dead ends: 107 [2020-10-12 15:38:23,105 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 15:38:23,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 15:38:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2020-10-12 15:38:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 15:38:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-10-12 15:38:23,126 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 28 [2020-10-12 15:38:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:23,126 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-10-12 15:38:23,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-10-12 15:38:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:38:23,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:23,128 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:23,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:38:23,128 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:23,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2125419219, now seen corresponding path program 2 times [2020-10-12 15:38:23,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:23,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888337986] [2020-10-12 15:38:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:23,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:23,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:38:23,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-10-12 15:38:23,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:38:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:23,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:23,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:23,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:23,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:23,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:23,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:23,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888337986] [2020-10-12 15:38:23,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:23,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:38:23,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902579092] [2020-10-12 15:38:23,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:38:23,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:23,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:38:23,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:38:23,773 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 8 states. [2020-10-12 15:38:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:23,972 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-12 15:38:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 15:38:23,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-12 15:38:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:23,973 INFO L225 Difference]: With dead ends: 97 [2020-10-12 15:38:23,973 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 15:38:23,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 15:38:23,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-10-12 15:38:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 15:38:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 15:38:23,981 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 28 [2020-10-12 15:38:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:23,981 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 15:38:23,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:38:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 15:38:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:38:23,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:23,982 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:23,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:38:23,983 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:23,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1450415714, now seen corresponding path program 2 times [2020-10-12 15:38:23,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:23,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511699083] [2020-10-12 15:38:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:24,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:38:24,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-12 15:38:24,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:24,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:38:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:38:24,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:25,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:38:25,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511699083] [2020-10-12 15:38:25,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:25,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 15:38:25,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946403646] [2020-10-12 15:38:25,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:38:25,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:38:25,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:38:25,064 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 8 states. [2020-10-12 15:38:25,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:25,244 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2020-10-12 15:38:25,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:38:25,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-12 15:38:25,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:25,245 INFO L225 Difference]: With dead ends: 89 [2020-10-12 15:38:25,245 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 15:38:25,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 15:38:25,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-10-12 15:38:25,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 15:38:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-12 15:38:25,258 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 30 [2020-10-12 15:38:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:25,258 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-12 15:38:25,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:38:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-12 15:38:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:38:25,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:25,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:25,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:38:25,263 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash 993748211, now seen corresponding path program 1 times [2020-10-12 15:38:25,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:25,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819858417] [2020-10-12 15:38:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:38:25,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-12 15:38:25,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:38:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:38:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:25,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:25,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:25,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:25,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:25,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819858417] [2020-10-12 15:38:25,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:25,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:25,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344489122] [2020-10-12 15:38:25,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:25,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:25,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:25,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:25,562 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 9 states. [2020-10-12 15:38:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:25,768 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2020-10-12 15:38:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:38:25,768 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-12 15:38:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:25,769 INFO L225 Difference]: With dead ends: 68 [2020-10-12 15:38:25,770 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 15:38:25,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:25,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 15:38:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-12 15:38:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 15:38:25,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-10-12 15:38:25,776 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 30 [2020-10-12 15:38:25,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:25,777 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-10-12 15:38:25,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-10-12 15:38:25,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 15:38:25,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:25,778 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:25,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:38:25,778 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:25,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:25,779 INFO L82 PathProgramCache]: Analyzing trace with hash -117947236, now seen corresponding path program 2 times [2020-10-12 15:38:25,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:25,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154430573] [2020-10-12 15:38:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:38:25,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 15:38:25,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:38:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:25,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:38:25,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:26,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:26,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:26,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:26,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:26,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:26,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:26,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:26,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:26,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154430573] [2020-10-12 15:38:26,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:26,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:26,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218338480] [2020-10-12 15:38:26,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:26,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:26,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:26,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:26,079 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 9 states. [2020-10-12 15:38:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:26,379 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-12 15:38:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:26,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-12 15:38:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:26,380 INFO L225 Difference]: With dead ends: 89 [2020-10-12 15:38:26,381 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 15:38:26,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 15:38:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2020-10-12 15:38:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 15:38:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-12 15:38:26,387 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 30 [2020-10-12 15:38:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:26,388 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-12 15:38:26,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-12 15:38:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:38:26,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:26,389 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:26,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:38:26,389 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:26,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:26,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1845129180, now seen corresponding path program 2 times [2020-10-12 15:38:26,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:26,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277407257] [2020-10-12 15:38:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:26,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:26,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:38:26,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:26,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-12 15:38:26,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:38:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:38:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:26,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:26,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:26,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:26,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:26,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:26,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:26,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:26,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277407257] [2020-10-12 15:38:26,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:26,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:26,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863011898] [2020-10-12 15:38:26,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:26,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:26,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:26,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:26,963 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 9 states. [2020-10-12 15:38:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:27,258 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-12 15:38:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:27,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-12 15:38:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:27,259 INFO L225 Difference]: With dead ends: 99 [2020-10-12 15:38:27,259 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 15:38:27,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 15:38:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-10-12 15:38:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 15:38:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 15:38:27,266 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 34 [2020-10-12 15:38:27,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:27,266 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 15:38:27,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 15:38:27,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:38:27,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:27,267 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:27,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:38:27,268 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:27,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:27,268 INFO L82 PathProgramCache]: Analyzing trace with hash 733433733, now seen corresponding path program 3 times [2020-10-12 15:38:27,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:27,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910409992] [2020-10-12 15:38:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:38:27,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 15:38:27,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:27,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:38:27,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:27,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:27,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:27,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,630 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:27,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910409992] [2020-10-12 15:38:27,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:27,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:27,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332893529] [2020-10-12 15:38:27,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:27,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:27,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:27,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:27,632 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 10 states. [2020-10-12 15:38:27,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:27,996 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-12 15:38:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:27,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-12 15:38:27,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:27,997 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:38:27,997 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 15:38:27,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:27,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 15:38:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2020-10-12 15:38:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 15:38:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-12 15:38:28,009 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 34 [2020-10-12 15:38:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:28,009 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-12 15:38:28,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-12 15:38:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:38:28,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:28,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:28,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:38:28,011 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:28,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1280806396, now seen corresponding path program 1 times [2020-10-12 15:38:28,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:28,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346496120] [2020-10-12 15:38:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:28,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:38:28,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:28,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-12 15:38:28,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:28,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:38:28,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:38:28,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:28,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:28,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:28,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:28,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:28,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:28,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:28,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:38:28,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346496120] [2020-10-12 15:38:28,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:28,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 15:38:28,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14474316] [2020-10-12 15:38:28,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 15:38:28,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:28,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 15:38:28,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:38:28,566 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 8 states. [2020-10-12 15:38:28,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:28,779 INFO L93 Difference]: Finished difference Result 97 states and 102 transitions. [2020-10-12 15:38:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:28,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-12 15:38:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:28,780 INFO L225 Difference]: With dead ends: 97 [2020-10-12 15:38:28,780 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 15:38:28,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 15:38:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2020-10-12 15:38:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 15:38:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2020-10-12 15:38:28,788 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 36 [2020-10-12 15:38:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:28,789 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2020-10-12 15:38:28,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 15:38:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2020-10-12 15:38:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:38:28,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:28,789 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] [2020-10-12 15:38:28,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:38:28,790 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:28,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1648105355, now seen corresponding path program 4 times [2020-10-12 15:38:28,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:28,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931924204] [2020-10-12 15:38:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:29,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:38:29,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:29,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-12 15:38:29,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:29,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:38:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:29,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:29,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:29,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:29,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:29,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:29,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:29,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:29,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:29,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:29,217 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:29,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931924204] [2020-10-12 15:38:29,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:29,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:29,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099298742] [2020-10-12 15:38:29,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:29,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:29,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:29,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:29,221 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 10 states. [2020-10-12 15:38:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:29,573 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2020-10-12 15:38:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:38:29,574 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-12 15:38:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:29,575 INFO L225 Difference]: With dead ends: 123 [2020-10-12 15:38:29,575 INFO L226 Difference]: Without dead ends: 97 [2020-10-12 15:38:29,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-12 15:38:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2020-10-12 15:38:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 15:38:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2020-10-12 15:38:29,583 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 36 [2020-10-12 15:38:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:29,584 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2020-10-12 15:38:29,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2020-10-12 15:38:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:38:29,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:29,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:29,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:38:29,585 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:29,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1847439967, now seen corresponding path program 1 times [2020-10-12 15:38:29,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:29,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111810292] [2020-10-12 15:38:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:29,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:30,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:38:30,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-10-12 15:38:30,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:38:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:38:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:30,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:30,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:30,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:30,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:38:30,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111810292] [2020-10-12 15:38:30,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:30,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:30,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624882250] [2020-10-12 15:38:30,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:30,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:30,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:30,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:30,768 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand 10 states. [2020-10-12 15:38:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:31,049 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-12 15:38:31,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:31,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-12 15:38:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:31,050 INFO L225 Difference]: With dead ends: 113 [2020-10-12 15:38:31,050 INFO L226 Difference]: Without dead ends: 109 [2020-10-12 15:38:31,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:31,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-12 15:38:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-12 15:38:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-12 15:38:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2020-10-12 15:38:31,059 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 38 [2020-10-12 15:38:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:31,059 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2020-10-12 15:38:31,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2020-10-12 15:38:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:38:31,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:31,060 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:31,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:38:31,060 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:31,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1023943099, now seen corresponding path program 3 times [2020-10-12 15:38:31,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:31,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129123460] [2020-10-12 15:38:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:31,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:38:31,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 659 [2020-10-12 15:38:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:38:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:32,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:32,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:32,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:32,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:32,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:32,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:32,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129123460] [2020-10-12 15:38:32,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:32,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:32,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584633321] [2020-10-12 15:38:32,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:32,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:32,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:32,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:32,037 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand 10 states. [2020-10-12 15:38:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:32,437 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-12 15:38:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:32,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-12 15:38:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:32,438 INFO L225 Difference]: With dead ends: 119 [2020-10-12 15:38:32,438 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:38:32,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:38:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-12 15:38:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 15:38:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-12 15:38:32,446 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 38 [2020-10-12 15:38:32,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:32,447 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-12 15:38:32,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-12 15:38:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:38:32,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:32,447 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:32,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:38:32,448 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:32,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1615087610, now seen corresponding path program 2 times [2020-10-12 15:38:32,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:32,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165482038] [2020-10-12 15:38:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:38:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:38:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2848 [2020-10-12 15:38:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:38:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:38:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:35,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:35,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:35,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:35,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:35,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:35,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:38:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:38:35,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165482038] [2020-10-12 15:38:35,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:35,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:35,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053898840] [2020-10-12 15:38:35,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:35,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:35,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:35,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:35,448 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 12 states. [2020-10-12 15:38:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:35,846 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-12 15:38:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:35,847 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-12 15:38:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:35,848 INFO L225 Difference]: With dead ends: 119 [2020-10-12 15:38:35,848 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 15:38:35,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:38:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 15:38:35,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2020-10-12 15:38:35,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 15:38:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-12 15:38:35,855 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 40 [2020-10-12 15:38:35,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:35,855 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-12 15:38:35,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-12 15:38:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:38:35,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:35,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:35,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:38:35,856 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:35,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:35,857 INFO L82 PathProgramCache]: Analyzing trace with hash 439169867, now seen corresponding path program 4 times [2020-10-12 15:38:35,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:35,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277576880] [2020-10-12 15:38:35,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:35,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:36,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:36,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:38:36,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:36,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 15:38:36,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:36,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:38:36,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:36,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:36,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:36,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:36,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:36,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:36,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277576880] [2020-10-12 15:38:36,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:36,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:36,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542740206] [2020-10-12 15:38:36,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:36,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:36,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:36,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:36,326 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 11 states. [2020-10-12 15:38:36,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:36,693 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2020-10-12 15:38:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:36,693 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-12 15:38:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:36,694 INFO L225 Difference]: With dead ends: 109 [2020-10-12 15:38:36,694 INFO L226 Difference]: Without dead ends: 107 [2020-10-12 15:38:36,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-12 15:38:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-12 15:38:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 15:38:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-12 15:38:36,702 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 40 [2020-10-12 15:38:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:36,702 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-12 15:38:36,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-12 15:38:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:38:36,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:36,703 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:36,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:38:36,704 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:36,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1838649268, now seen corresponding path program 5 times [2020-10-12 15:38:36,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:36,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972842550] [2020-10-12 15:38:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:38:36,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:36,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 15:38:36,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:38:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:37,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:37,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972842550] [2020-10-12 15:38:37,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:37,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:37,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062747845] [2020-10-12 15:38:37,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:37,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:37,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:37,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:37,172 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 11 states. [2020-10-12 15:38:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:37,723 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-12 15:38:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:37,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-12 15:38:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:37,726 INFO L225 Difference]: With dead ends: 119 [2020-10-12 15:38:37,726 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 15:38:37,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:38:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 15:38:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2020-10-12 15:38:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-12 15:38:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2020-10-12 15:38:37,736 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 40 [2020-10-12 15:38:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:37,737 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2020-10-12 15:38:37,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2020-10-12 15:38:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:38:37,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:37,738 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:37,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:38:37,738 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:37,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1662771925, now seen corresponding path program 3 times [2020-10-12 15:38:37,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:37,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116054581] [2020-10-12 15:38:37,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:37,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:39,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 15:38:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-12 15:38:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:38:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:38:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:39,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:39,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:39,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:39,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:39,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:39,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:39,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 15:38:39,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116054581] [2020-10-12 15:38:39,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:39,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:39,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550691206] [2020-10-12 15:38:39,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:39,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:39,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:39,494 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand 10 states. [2020-10-12 15:38:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:39,765 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-10-12 15:38:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:39,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-12 15:38:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:39,766 INFO L225 Difference]: With dead ends: 119 [2020-10-12 15:38:39,766 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 15:38:39,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 15:38:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-12 15:38:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 15:38:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2020-10-12 15:38:39,779 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 42 [2020-10-12 15:38:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:39,780 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2020-10-12 15:38:39,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2020-10-12 15:38:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:38:39,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:39,780 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-12 15:38:39,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:38:39,781 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:39,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1655804172, now seen corresponding path program 5 times [2020-10-12 15:38:39,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:39,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508071201] [2020-10-12 15:38:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:40,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:40,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:38:40,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:40,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-12 15:38:40,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:40,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:40,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:38:40,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:40,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:40,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:40,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:40,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508071201] [2020-10-12 15:38:40,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:40,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:40,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189003882] [2020-10-12 15:38:40,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:40,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:40,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:40,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:40,550 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 11 states. [2020-10-12 15:38:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:41,094 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2020-10-12 15:38:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:41,094 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-12 15:38:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:41,095 INFO L225 Difference]: With dead ends: 131 [2020-10-12 15:38:41,095 INFO L226 Difference]: Without dead ends: 113 [2020-10-12 15:38:41,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:38:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-12 15:38:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2020-10-12 15:38:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-12 15:38:41,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2020-10-12 15:38:41,106 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 44 [2020-10-12 15:38:41,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:41,107 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2020-10-12 15:38:41,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:41,107 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2020-10-12 15:38:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:38:41,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:41,110 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:41,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:38:41,110 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:41,110 INFO L82 PathProgramCache]: Analyzing trace with hash 210546851, now seen corresponding path program 6 times [2020-10-12 15:38:41,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:41,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508253128] [2020-10-12 15:38:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:38:41,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-12 15:38:41,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:38:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:41,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:41,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:41,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:41,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508253128] [2020-10-12 15:38:41,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:41,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:41,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962680536] [2020-10-12 15:38:41,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:41,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:41,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:41,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:41,606 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 12 states. [2020-10-12 15:38:42,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:42,234 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2020-10-12 15:38:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:38:42,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-12 15:38:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:42,236 INFO L225 Difference]: With dead ends: 145 [2020-10-12 15:38:42,237 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 15:38:42,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 15:38:42,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2020-10-12 15:38:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-12 15:38:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2020-10-12 15:38:42,261 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 46 [2020-10-12 15:38:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:42,267 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2020-10-12 15:38:42,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2020-10-12 15:38:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:38:42,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:42,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:42,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:38:42,269 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash -723015497, now seen corresponding path program 4 times [2020-10-12 15:38:42,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:42,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089487522] [2020-10-12 15:38:42,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:43,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:43,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:38:43,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1267 [2020-10-12 15:38:43,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:38:43,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:43,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:43,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:43,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:43,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:43,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:43,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:43,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:43,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:43,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:43,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 15:38:43,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089487522] [2020-10-12 15:38:43,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:43,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:43,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200890815] [2020-10-12 15:38:43,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:43,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:43,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:43,756 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand 10 states. [2020-10-12 15:38:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:44,114 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-10-12 15:38:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:44,115 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-12 15:38:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:44,116 INFO L225 Difference]: With dead ends: 121 [2020-10-12 15:38:44,117 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 15:38:44,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:38:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 15:38:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-12 15:38:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 15:38:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2020-10-12 15:38:44,128 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 48 [2020-10-12 15:38:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:44,128 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2020-10-12 15:38:44,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2020-10-12 15:38:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:38:44,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:44,129 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:44,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:38:44,130 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash -257446371, now seen corresponding path program 6 times [2020-10-12 15:38:44,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:44,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805449586] [2020-10-12 15:38:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:44,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:44,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:44,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:38:44,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-12 15:38:44,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:38:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:45,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:45,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:45,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 15:38:45,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805449586] [2020-10-12 15:38:45,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:45,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:45,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043699184] [2020-10-12 15:38:45,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:45,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:45,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:45,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:45,161 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand 11 states. [2020-10-12 15:38:45,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:45,640 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-12 15:38:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:45,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-12 15:38:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:45,641 INFO L225 Difference]: With dead ends: 139 [2020-10-12 15:38:45,641 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 15:38:45,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:38:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 15:38:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-10-12 15:38:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 15:38:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2020-10-12 15:38:45,651 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 48 [2020-10-12 15:38:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:45,651 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2020-10-12 15:38:45,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2020-10-12 15:38:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:38:45,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:45,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:45,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:38:45,658 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:45,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1013581906, now seen corresponding path program 5 times [2020-10-12 15:38:45,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:45,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041270421] [2020-10-12 15:38:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:45,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:47,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:47,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:38:47,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:47,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-12 15:38:47,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:38:47,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:38:47,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:47,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:47,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:47,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:47,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 15:38:47,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041270421] [2020-10-12 15:38:47,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:47,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:47,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930018103] [2020-10-12 15:38:47,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:47,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:47,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:47,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:47,446 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand 12 states. [2020-10-12 15:38:47,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:47,831 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2020-10-12 15:38:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:38:47,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-12 15:38:47,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:47,832 INFO L225 Difference]: With dead ends: 131 [2020-10-12 15:38:47,832 INFO L226 Difference]: Without dead ends: 127 [2020-10-12 15:38:47,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:38:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-12 15:38:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 121. [2020-10-12 15:38:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 15:38:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2020-10-12 15:38:47,846 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 50 [2020-10-12 15:38:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:47,847 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2020-10-12 15:38:47,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2020-10-12 15:38:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:38:47,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:47,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:47,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:38:47,850 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:47,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:47,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1982103453, now seen corresponding path program 7 times [2020-10-12 15:38:47,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:47,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676157427] [2020-10-12 15:38:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-12 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:38:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:38:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:48,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:48,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:48,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:48,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:48,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:48,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:48,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:48,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:48,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:48,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676157427] [2020-10-12 15:38:48,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:48,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:38:48,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385015244] [2020-10-12 15:38:48,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:38:48,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:48,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:38:48,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:48,546 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand 13 states. [2020-10-12 15:38:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:48,999 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2020-10-12 15:38:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:38:48,999 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-12 15:38:48,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:49,000 INFO L225 Difference]: With dead ends: 131 [2020-10-12 15:38:49,000 INFO L226 Difference]: Without dead ends: 129 [2020-10-12 15:38:49,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-12 15:38:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2020-10-12 15:38:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-12 15:38:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 131 transitions. [2020-10-12 15:38:49,009 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 131 transitions. Word has length 50 [2020-10-12 15:38:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:49,010 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 131 transitions. [2020-10-12 15:38:49,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:38:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2020-10-12 15:38:49,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:38:49,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:49,011 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:49,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:38:49,011 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:49,012 INFO L82 PathProgramCache]: Analyzing trace with hash -292370036, now seen corresponding path program 7 times [2020-10-12 15:38:49,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:49,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914794098] [2020-10-12 15:38:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:49,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:49,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:38:49,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:49,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 15:38:49,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:38:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:49,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:38:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:49,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:49,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:49,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:49,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:49,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914794098] [2020-10-12 15:38:49,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:49,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:38:49,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132919338] [2020-10-12 15:38:49,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:38:49,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:49,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:38:49,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:49,650 INFO L87 Difference]: Start difference. First operand 127 states and 131 transitions. Second operand 13 states. [2020-10-12 15:38:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:50,336 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2020-10-12 15:38:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:38:50,337 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-12 15:38:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:50,338 INFO L225 Difference]: With dead ends: 141 [2020-10-12 15:38:50,339 INFO L226 Difference]: Without dead ends: 139 [2020-10-12 15:38:50,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:38:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-12 15:38:50,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2020-10-12 15:38:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-12 15:38:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2020-10-12 15:38:50,348 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 50 [2020-10-12 15:38:50,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:50,348 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2020-10-12 15:38:50,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:38:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2020-10-12 15:38:50,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:38:50,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:50,349 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:50,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:38:50,349 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:50,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:50,350 INFO L82 PathProgramCache]: Analyzing trace with hash -858591955, now seen corresponding path program 6 times [2020-10-12 15:38:50,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:50,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535268878] [2020-10-12 15:38:50,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:50,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:50,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:51,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:55,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:38:55,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:38:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4925 [2020-10-12 15:38:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:38:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:38:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:38:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:55,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:55,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:55,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:55,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:55,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:55,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:55,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:55,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:55,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 15:38:55,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535268878] [2020-10-12 15:38:55,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:55,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:38:55,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307127764] [2020-10-12 15:38:55,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:38:55,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:55,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:38:55,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:55,483 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand 14 states. [2020-10-12 15:38:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:56,068 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-12 15:38:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:56,068 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-12 15:38:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:56,070 INFO L225 Difference]: With dead ends: 149 [2020-10-12 15:38:56,070 INFO L226 Difference]: Without dead ends: 145 [2020-10-12 15:38:56,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:38:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-12 15:38:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 135. [2020-10-12 15:38:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-12 15:38:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2020-10-12 15:38:56,081 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 52 [2020-10-12 15:38:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:56,081 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2020-10-12 15:38:56,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:38:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2020-10-12 15:38:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:38:56,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:56,082 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:56,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:38:56,082 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:56,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:56,083 INFO L82 PathProgramCache]: Analyzing trace with hash -426375352, now seen corresponding path program 7 times [2020-10-12 15:38:56,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:56,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496604853] [2020-10-12 15:38:56,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:56,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:56,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:58,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:58,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 15:38:58,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:58,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2492 [2020-10-12 15:38:58,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 15:38:58,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:38:58,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:58,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:58,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:58,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:58,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:58,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 15:38:58,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496604853] [2020-10-12 15:38:58,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:58,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:58,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861649039] [2020-10-12 15:38:58,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:58,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:58,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:58,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:58,713 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand 12 states. [2020-10-12 15:38:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:59,102 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-12 15:38:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:38:59,103 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-12 15:38:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:59,103 INFO L225 Difference]: With dead ends: 145 [2020-10-12 15:38:59,104 INFO L226 Difference]: Without dead ends: 106 [2020-10-12 15:38:59,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:38:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-12 15:38:59,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-12 15:38:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-12 15:38:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-10-12 15:38:59,112 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 54 [2020-10-12 15:38:59,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:59,112 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-10-12 15:38:59,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-10-12 15:38:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:38:59,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:59,113 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-10-12 15:38:59,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:38:59,114 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:59,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1474886860, now seen corresponding path program 8 times [2020-10-12 15:38:59,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:59,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658586021] [2020-10-12 15:38:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:59,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:59,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:59,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 15:38:59,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-12 15:38:59,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:38:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:59,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:38:59,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:00,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:00,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:00,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:00,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:00,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:00,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:00,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658586021] [2020-10-12 15:39:00,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:00,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:00,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836308720] [2020-10-12 15:39:00,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:00,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:00,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:00,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:00,117 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 13 states. [2020-10-12 15:39:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:00,758 INFO L93 Difference]: Finished difference Result 157 states and 163 transitions. [2020-10-12 15:39:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:39:00,758 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-12 15:39:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:00,760 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:39:00,760 INFO L226 Difference]: Without dead ends: 137 [2020-10-12 15:39:00,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:39:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-12 15:39:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2020-10-12 15:39:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-12 15:39:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 138 transitions. [2020-10-12 15:39:00,769 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 138 transitions. Word has length 54 [2020-10-12 15:39:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:00,770 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 138 transitions. [2020-10-12 15:39:00,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 138 transitions. [2020-10-12 15:39:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 15:39:00,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:00,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:00,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:39:00,771 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:00,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:00,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1967445893, now seen corresponding path program 8 times [2020-10-12 15:39:00,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:00,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556781820] [2020-10-12 15:39:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:01,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:01,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:39:01,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-12 15:39:01,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:01,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 15:39:01,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:01,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:01,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:01,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:01,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:01,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:01,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556781820] [2020-10-12 15:39:01,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:01,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:39:01,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802306276] [2020-10-12 15:39:01,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:39:01,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:01,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:39:01,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:01,624 INFO L87 Difference]: Start difference. First operand 133 states and 138 transitions. Second operand 14 states. [2020-10-12 15:39:02,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:02,218 INFO L93 Difference]: Finished difference Result 171 states and 178 transitions. [2020-10-12 15:39:02,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:39:02,218 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-12 15:39:02,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:02,219 INFO L225 Difference]: With dead ends: 171 [2020-10-12 15:39:02,220 INFO L226 Difference]: Without dead ends: 143 [2020-10-12 15:39:02,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:39:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-12 15:39:02,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2020-10-12 15:39:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-12 15:39:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 144 transitions. [2020-10-12 15:39:02,229 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 144 transitions. Word has length 56 [2020-10-12 15:39:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:02,230 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 144 transitions. [2020-10-12 15:39:02,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:39:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 144 transitions. [2020-10-12 15:39:02,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 15:39:02,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:02,231 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:02,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:39:02,231 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:02,231 INFO L82 PathProgramCache]: Analyzing trace with hash 815799477, now seen corresponding path program 9 times [2020-10-12 15:39:02,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:02,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874332659] [2020-10-12 15:39:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:02,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:03,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 15:39:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:03,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:03,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:03,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:03,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:03,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:03,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:03,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:03,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:03,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874332659] [2020-10-12 15:39:03,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:03,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:39:03,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101459099] [2020-10-12 15:39:03,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:39:03,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:03,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:39:03,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:03,444 INFO L87 Difference]: Start difference. First operand 139 states and 144 transitions. Second operand 14 states. [2020-10-12 15:39:04,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:04,129 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-12 15:39:04,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:39:04,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-12 15:39:04,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:04,131 INFO L225 Difference]: With dead ends: 161 [2020-10-12 15:39:04,131 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 15:39:04,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:39:04,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 15:39:04,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2020-10-12 15:39:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-12 15:39:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 143 transitions. [2020-10-12 15:39:04,140 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 143 transitions. Word has length 58 [2020-10-12 15:39:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:04,140 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 143 transitions. [2020-10-12 15:39:04,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:39:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 143 transitions. [2020-10-12 15:39:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:39:04,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:04,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:04,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:39:04,142 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:04,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:04,142 INFO L82 PathProgramCache]: Analyzing trace with hash 701290346, now seen corresponding path program 8 times [2020-10-12 15:39:04,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:04,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178156731] [2020-10-12 15:39:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:04,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:04,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:06,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2249 [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 15:39:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:06,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:06,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:06,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:06,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:06,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:06,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:06,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:06,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:39:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 15:39:06,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178156731] [2020-10-12 15:39:06,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:06,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:06,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339555162] [2020-10-12 15:39:06,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:06,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:06,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:06,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:06,699 INFO L87 Difference]: Start difference. First operand 139 states and 143 transitions. Second operand 12 states. [2020-10-12 15:39:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:07,206 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2020-10-12 15:39:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:39:07,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-12 15:39:07,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:07,208 INFO L225 Difference]: With dead ends: 145 [2020-10-12 15:39:07,208 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 15:39:07,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:39:07,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 15:39:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-10-12 15:39:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-12 15:39:07,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 145 transitions. [2020-10-12 15:39:07,219 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 145 transitions. Word has length 60 [2020-10-12 15:39:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:07,220 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 145 transitions. [2020-10-12 15:39:07,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 145 transitions. [2020-10-12 15:39:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:39:07,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:07,221 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:07,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:39:07,221 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:07,222 INFO L82 PathProgramCache]: Analyzing trace with hash -640005061, now seen corresponding path program 10 times [2020-10-12 15:39:07,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:07,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454033954] [2020-10-12 15:39:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:07,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:07,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:07,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:39:07,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-12 15:39:07,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:39:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:08,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:08,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:08,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454033954] [2020-10-12 15:39:08,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:08,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:39:08,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737673965] [2020-10-12 15:39:08,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:39:08,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:39:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:39:08,324 INFO L87 Difference]: Start difference. First operand 141 states and 145 transitions. Second operand 15 states. [2020-10-12 15:39:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:08,990 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2020-10-12 15:39:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:08,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-12 15:39:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:08,992 INFO L225 Difference]: With dead ends: 151 [2020-10-12 15:39:08,992 INFO L226 Difference]: Without dead ends: 149 [2020-10-12 15:39:08,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-12 15:39:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-10-12 15:39:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 15:39:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 125 transitions. [2020-10-12 15:39:09,003 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 125 transitions. Word has length 60 [2020-10-12 15:39:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:09,003 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 125 transitions. [2020-10-12 15:39:09,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:39:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 125 transitions. [2020-10-12 15:39:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:39:09,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:09,004 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:09,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:39:09,004 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:09,004 INFO L82 PathProgramCache]: Analyzing trace with hash 304738852, now seen corresponding path program 9 times [2020-10-12 15:39:09,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:09,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715095314] [2020-10-12 15:39:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:09,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:39:09,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:09,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:09,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:09,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:09,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:09,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715095314] [2020-10-12 15:39:09,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:09,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:39:09,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670822897] [2020-10-12 15:39:09,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:39:09,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:39:09,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:39:09,996 INFO L87 Difference]: Start difference. First operand 121 states and 125 transitions. Second operand 15 states. [2020-10-12 15:39:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:10,959 INFO L93 Difference]: Finished difference Result 141 states and 146 transitions. [2020-10-12 15:39:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:10,959 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-12 15:39:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:10,960 INFO L225 Difference]: With dead ends: 141 [2020-10-12 15:39:10,961 INFO L226 Difference]: Without dead ends: 139 [2020-10-12 15:39:10,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:39:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-12 15:39:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2020-10-12 15:39:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-12 15:39:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2020-10-12 15:39:10,973 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 60 [2020-10-12 15:39:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:10,973 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2020-10-12 15:39:10,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:39:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2020-10-12 15:39:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:39:10,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:10,974 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2020-10-12 15:39:10,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 15:39:10,975 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash -323070395, now seen corresponding path program 9 times [2020-10-12 15:39:10,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:10,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133248201] [2020-10-12 15:39:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:11,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:11,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:14,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:39:14,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:39:14,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3027 [2020-10-12 15:39:14,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:39:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:39:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:14,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:14,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 15:39:14,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133248201] [2020-10-12 15:39:14,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:14,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:39:14,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617352811] [2020-10-12 15:39:14,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:39:14,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:14,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:39:14,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:14,201 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand 14 states. [2020-10-12 15:39:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:14,716 INFO L93 Difference]: Finished difference Result 167 states and 172 transitions. [2020-10-12 15:39:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:14,717 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-12 15:39:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:14,718 INFO L225 Difference]: With dead ends: 167 [2020-10-12 15:39:14,718 INFO L226 Difference]: Without dead ends: 163 [2020-10-12 15:39:14,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:39:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-12 15:39:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2020-10-12 15:39:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 15:39:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 162 transitions. [2020-10-12 15:39:14,730 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 162 transitions. Word has length 62 [2020-10-12 15:39:14,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:14,730 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 162 transitions. [2020-10-12 15:39:14,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:39:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 162 transitions. [2020-10-12 15:39:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 15:39:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:14,731 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 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] [2020-10-12 15:39:14,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 15:39:14,732 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:14,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1186231712, now seen corresponding path program 10 times [2020-10-12 15:39:14,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:14,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918210566] [2020-10-12 15:39:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:15,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:19,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:19,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:39:19,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:39:19,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 15:39:19,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:19,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:39:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:39:19,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:39:19,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:19,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:20,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:20,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 15:39:20,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918210566] [2020-10-12 15:39:20,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:20,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:39:20,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790095280] [2020-10-12 15:39:20,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:39:20,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:39:20,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:20,016 INFO L87 Difference]: Start difference. First operand 157 states and 162 transitions. Second operand 16 states. [2020-10-12 15:39:20,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:20,688 INFO L93 Difference]: Finished difference Result 175 states and 180 transitions. [2020-10-12 15:39:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:20,689 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-10-12 15:39:20,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:20,690 INFO L225 Difference]: With dead ends: 175 [2020-10-12 15:39:20,690 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 15:39:20,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:39:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 15:39:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 159. [2020-10-12 15:39:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-12 15:39:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 164 transitions. [2020-10-12 15:39:20,701 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 164 transitions. Word has length 64 [2020-10-12 15:39:20,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:20,701 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 164 transitions. [2020-10-12 15:39:20,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:39:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 164 transitions. [2020-10-12 15:39:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 15:39:20,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:20,702 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:20,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 15:39:20,702 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash 336206180, now seen corresponding path program 11 times [2020-10-12 15:39:20,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:20,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938995783] [2020-10-12 15:39:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:20,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:21,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:39:21,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:21,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-12 15:39:21,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:39:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:22,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:22,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:22,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:22,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:22,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:22,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:22,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:22,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:22,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938995783] [2020-10-12 15:39:22,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:22,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:39:22,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164922807] [2020-10-12 15:39:22,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:39:22,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:22,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:39:22,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:39:22,238 INFO L87 Difference]: Start difference. First operand 159 states and 164 transitions. Second operand 15 states. [2020-10-12 15:39:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:23,168 INFO L93 Difference]: Finished difference Result 218 states and 225 transitions. [2020-10-12 15:39:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:23,169 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-12 15:39:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:23,170 INFO L225 Difference]: With dead ends: 218 [2020-10-12 15:39:23,171 INFO L226 Difference]: Without dead ends: 196 [2020-10-12 15:39:23,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:39:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-12 15:39:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2020-10-12 15:39:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-12 15:39:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 198 transitions. [2020-10-12 15:39:23,185 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 198 transitions. Word has length 64 [2020-10-12 15:39:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:23,185 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 198 transitions. [2020-10-12 15:39:23,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:39:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 198 transitions. [2020-10-12 15:39:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:39:23,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:23,187 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 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] [2020-10-12 15:39:23,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 15:39:23,187 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:23,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:23,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1755569221, now seen corresponding path program 11 times [2020-10-12 15:39:23,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:23,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38693831] [2020-10-12 15:39:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:23,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:28,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 15:39:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:28,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:28,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:28,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:28,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:28,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-12 15:39:28,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38693831] [2020-10-12 15:39:28,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:28,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:39:28,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630946696] [2020-10-12 15:39:28,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:39:28,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:28,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:39:28,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:28,392 INFO L87 Difference]: Start difference. First operand 192 states and 198 transitions. Second operand 14 states. [2020-10-12 15:39:28,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:28,896 INFO L93 Difference]: Finished difference Result 204 states and 210 transitions. [2020-10-12 15:39:28,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:28,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-12 15:39:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:28,897 INFO L225 Difference]: With dead ends: 204 [2020-10-12 15:39:28,897 INFO L226 Difference]: Without dead ends: 157 [2020-10-12 15:39:28,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:39:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-12 15:39:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-12 15:39:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-12 15:39:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 162 transitions. [2020-10-12 15:39:28,909 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 162 transitions. Word has length 66 [2020-10-12 15:39:28,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:28,910 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 162 transitions. [2020-10-12 15:39:28,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:39:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 162 transitions. [2020-10-12 15:39:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 15:39:28,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:28,913 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:28,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 15:39:28,914 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:28,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1022918893, now seen corresponding path program 10 times [2020-10-12 15:39:28,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:28,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248698162] [2020-10-12 15:39:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:29,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:29,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 15:39:29,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-12 15:39:29,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:39:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:39:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:30,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:30,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248698162] [2020-10-12 15:39:30,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:30,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:39:30,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760289339] [2020-10-12 15:39:30,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:39:30,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:30,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:39:30,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:30,276 INFO L87 Difference]: Start difference. First operand 157 states and 162 transitions. Second operand 16 states. [2020-10-12 15:39:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:31,090 INFO L93 Difference]: Finished difference Result 197 states and 204 transitions. [2020-10-12 15:39:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:31,090 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-12 15:39:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:31,092 INFO L225 Difference]: With dead ends: 197 [2020-10-12 15:39:31,092 INFO L226 Difference]: Without dead ends: 167 [2020-10-12 15:39:31,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:39:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-12 15:39:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2020-10-12 15:39:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-12 15:39:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 168 transitions. [2020-10-12 15:39:31,105 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 168 transitions. Word has length 66 [2020-10-12 15:39:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:31,107 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 168 transitions. [2020-10-12 15:39:31,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:39:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 168 transitions. [2020-10-12 15:39:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:39:31,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:31,108 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:31,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 15:39:31,108 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:31,109 INFO L82 PathProgramCache]: Analyzing trace with hash -372430323, now seen corresponding path program 12 times [2020-10-12 15:39:31,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:31,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660511597] [2020-10-12 15:39:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:31,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:32,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:32,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:39:32,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:32,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-12 15:39:32,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:39:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:32,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:39:32,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:33,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:33,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:33,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:33,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:33,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:33,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:33,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660511597] [2020-10-12 15:39:33,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:33,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:39:33,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194622820] [2020-10-12 15:39:33,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:39:33,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:33,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:39:33,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:33,107 INFO L87 Difference]: Start difference. First operand 163 states and 168 transitions. Second operand 16 states. [2020-10-12 15:39:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:34,059 INFO L93 Difference]: Finished difference Result 187 states and 192 transitions. [2020-10-12 15:39:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:34,060 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-12 15:39:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:34,061 INFO L225 Difference]: With dead ends: 187 [2020-10-12 15:39:34,061 INFO L226 Difference]: Without dead ends: 165 [2020-10-12 15:39:34,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:39:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-12 15:39:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2020-10-12 15:39:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-12 15:39:34,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 167 transitions. [2020-10-12 15:39:34,073 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 167 transitions. Word has length 68 [2020-10-12 15:39:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:34,073 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 167 transitions. [2020-10-12 15:39:34,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:39:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 167 transitions. [2020-10-12 15:39:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 15:39:34,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:34,074 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:34,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 15:39:34,075 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:34,075 INFO L82 PathProgramCache]: Analyzing trace with hash -798386477, now seen corresponding path program 13 times [2020-10-12 15:39:34,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:34,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626667628] [2020-10-12 15:39:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:34,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:34,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:34,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 15:39:34,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-12 15:39:34,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:39:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:39:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:35,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:35,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:35,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:35,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:35,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:35,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:35,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:35,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626667628] [2020-10-12 15:39:35,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:35,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:39:35,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050025381] [2020-10-12 15:39:35,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:39:35,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:35,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:39:35,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:39:35,487 INFO L87 Difference]: Start difference. First operand 163 states and 167 transitions. Second operand 17 states. [2020-10-12 15:39:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:36,382 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2020-10-12 15:39:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:39:36,383 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-12 15:39:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:36,384 INFO L225 Difference]: With dead ends: 173 [2020-10-12 15:39:36,384 INFO L226 Difference]: Without dead ends: 171 [2020-10-12 15:39:36,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:39:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-12 15:39:36,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 137. [2020-10-12 15:39:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-12 15:39:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2020-10-12 15:39:36,394 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 70 [2020-10-12 15:39:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:36,395 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2020-10-12 15:39:36,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:39:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2020-10-12 15:39:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 15:39:36,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:36,396 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:36,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 15:39:36,396 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:36,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:36,396 INFO L82 PathProgramCache]: Analyzing trace with hash 877201788, now seen corresponding path program 11 times [2020-10-12 15:39:36,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:36,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373014550] [2020-10-12 15:39:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:37,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:37,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 15:39:37,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-12 15:39:37,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:39:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:37,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:39:37,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:37,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:37,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:37,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:37,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:37,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:37,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:37,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:37,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:37,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373014550] [2020-10-12 15:39:37,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:37,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:39:37,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755606026] [2020-10-12 15:39:37,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:39:37,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:37,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:39:37,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:39:37,681 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand 17 states. [2020-10-12 15:39:39,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:39,124 INFO L93 Difference]: Finished difference Result 157 states and 162 transitions. [2020-10-12 15:39:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:39:39,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-12 15:39:39,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:39,127 INFO L225 Difference]: With dead ends: 157 [2020-10-12 15:39:39,127 INFO L226 Difference]: Without dead ends: 155 [2020-10-12 15:39:39,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:39:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-12 15:39:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 143. [2020-10-12 15:39:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-12 15:39:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 148 transitions. [2020-10-12 15:39:39,136 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 148 transitions. Word has length 70 [2020-10-12 15:39:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:39,136 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 148 transitions. [2020-10-12 15:39:39,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:39:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 148 transitions. [2020-10-12 15:39:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 15:39:39,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:39,137 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:39,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 15:39:39,138 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:39,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1416764957, now seen corresponding path program 12 times [2020-10-12 15:39:39,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370629992] [2020-10-12 15:39:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:39,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:39,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:44,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:39:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:44,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:44,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:44,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:44,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:44,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:44,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:39:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:39:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-12 15:39:44,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370629992] [2020-10-12 15:39:44,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:44,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:39:44,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858939422] [2020-10-12 15:39:44,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:39:44,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:44,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:39:44,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:44,676 INFO L87 Difference]: Start difference. First operand 143 states and 148 transitions. Second operand 14 states. [2020-10-12 15:39:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:45,486 INFO L93 Difference]: Finished difference Result 173 states and 178 transitions. [2020-10-12 15:39:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:45,487 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 72 [2020-10-12 15:39:45,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:45,488 INFO L225 Difference]: With dead ends: 173 [2020-10-12 15:39:45,488 INFO L226 Difference]: Without dead ends: 169 [2020-10-12 15:39:45,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:39:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-12 15:39:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 145. [2020-10-12 15:39:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-12 15:39:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 150 transitions. [2020-10-12 15:39:45,499 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 150 transitions. Word has length 72 [2020-10-12 15:39:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:45,499 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 150 transitions. [2020-10-12 15:39:45,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:39:45,499 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 150 transitions. [2020-10-12 15:39:45,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 15:39:45,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:45,500 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:45,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 15:39:45,500 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash 53263416, now seen corresponding path program 13 times [2020-10-12 15:39:45,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:45,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012398182] [2020-10-12 15:39:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:50,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:50,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 15:39:50,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:39:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4940 [2020-10-12 15:39:50,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:39:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 15:39:50,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 15:39:50,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:50,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:50,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:50,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:50,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:50,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 15:39:50,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012398182] [2020-10-12 15:39:50,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:50,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:39:50,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396355513] [2020-10-12 15:39:50,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:39:50,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:50,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:39:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:50,701 INFO L87 Difference]: Start difference. First operand 145 states and 150 transitions. Second operand 16 states. [2020-10-12 15:39:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:51,361 INFO L93 Difference]: Finished difference Result 193 states and 198 transitions. [2020-10-12 15:39:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:39:51,361 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-12 15:39:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:51,363 INFO L225 Difference]: With dead ends: 193 [2020-10-12 15:39:51,363 INFO L226 Difference]: Without dead ends: 189 [2020-10-12 15:39:51,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:39:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-12 15:39:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181. [2020-10-12 15:39:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-12 15:39:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 186 transitions. [2020-10-12 15:39:51,377 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 186 transitions. Word has length 74 [2020-10-12 15:39:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:51,377 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 186 transitions. [2020-10-12 15:39:51,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:39:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 186 transitions. [2020-10-12 15:39:51,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 15:39:51,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:51,378 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:51,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 15:39:51,379 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:51,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1469957308, now seen corresponding path program 14 times [2020-10-12 15:39:51,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:51,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143173762] [2020-10-12 15:39:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:52,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:39:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:53,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:53,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:53,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:53,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:53,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:53,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:53,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:53,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:53,607 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:53,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143173762] [2020-10-12 15:39:53,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:53,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 15:39:53,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458419439] [2020-10-12 15:39:53,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 15:39:53,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:53,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 15:39:53,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:39:53,608 INFO L87 Difference]: Start difference. First operand 181 states and 186 transitions. Second operand 17 states. [2020-10-12 15:39:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:54,898 INFO L93 Difference]: Finished difference Result 248 states and 255 transitions. [2020-10-12 15:39:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:39:54,898 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2020-10-12 15:39:54,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:54,900 INFO L225 Difference]: With dead ends: 248 [2020-10-12 15:39:54,900 INFO L226 Difference]: Without dead ends: 224 [2020-10-12 15:39:54,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:39:54,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-12 15:39:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2020-10-12 15:39:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-12 15:39:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 226 transitions. [2020-10-12 15:39:54,916 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 226 transitions. Word has length 74 [2020-10-12 15:39:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:54,917 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 226 transitions. [2020-10-12 15:39:54,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 15:39:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 226 transitions. [2020-10-12 15:39:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 15:39:54,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:54,918 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:54,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 15:39:54,918 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:54,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:54,919 INFO L82 PathProgramCache]: Analyzing trace with hash -306692205, now seen corresponding path program 14 times [2020-10-12 15:39:54,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:54,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901308891] [2020-10-12 15:39:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:55,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:59,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:59,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 15:39:59,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:39:59,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 15:39:59,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:39:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 15:39:59,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 15:39:59,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:00,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:00,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:00,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:00,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:00,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:00,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:00,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:00,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 15:40:00,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901308891] [2020-10-12 15:40:00,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:00,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:40:00,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440790244] [2020-10-12 15:40:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:40:00,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:00,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:40:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:40:00,284 INFO L87 Difference]: Start difference. First operand 220 states and 226 transitions. Second operand 18 states. [2020-10-12 15:40:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:01,105 INFO L93 Difference]: Finished difference Result 240 states and 246 transitions. [2020-10-12 15:40:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:40:01,106 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-12 15:40:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:01,107 INFO L225 Difference]: With dead ends: 240 [2020-10-12 15:40:01,108 INFO L226 Difference]: Without dead ends: 236 [2020-10-12 15:40:01,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:40:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-12 15:40:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 222. [2020-10-12 15:40:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-12 15:40:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 228 transitions. [2020-10-12 15:40:01,126 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 228 transitions. Word has length 76 [2020-10-12 15:40:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:01,127 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 228 transitions. [2020-10-12 15:40:01,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:40:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 228 transitions. [2020-10-12 15:40:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 15:40:01,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:01,128 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:01,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 15:40:01,129 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:01,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1885189227, now seen corresponding path program 12 times [2020-10-12 15:40:01,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:01,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575832349] [2020-10-12 15:40:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:01,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:02,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:02,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 15:40:02,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:02,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-12 15:40:02,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:02,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:40:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:02,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 15:40:02,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:02,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:02,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:02,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:02,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:02,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:02,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:02,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:40:02,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575832349] [2020-10-12 15:40:02,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:02,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:40:02,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827296039] [2020-10-12 15:40:02,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:40:02,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:02,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:40:02,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:40:02,928 INFO L87 Difference]: Start difference. First operand 222 states and 228 transitions. Second operand 18 states. [2020-10-12 15:40:04,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:04,128 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2020-10-12 15:40:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:40:04,128 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-12 15:40:04,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:04,130 INFO L225 Difference]: With dead ends: 264 [2020-10-12 15:40:04,130 INFO L226 Difference]: Without dead ends: 232 [2020-10-12 15:40:04,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:40:04,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-12 15:40:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2020-10-12 15:40:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-12 15:40:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 234 transitions. [2020-10-12 15:40:04,143 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 234 transitions. Word has length 76 [2020-10-12 15:40:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:04,143 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 234 transitions. [2020-10-12 15:40:04,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:40:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 234 transitions. [2020-10-12 15:40:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 15:40:04,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:04,145 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:04,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 15:40:04,145 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:04,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:04,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1668306990, now seen corresponding path program 15 times [2020-10-12 15:40:04,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:04,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544794635] [2020-10-12 15:40:04,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:04,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:09,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:09,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 15:40:09,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:40:09,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 15:40:09,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:40:09,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-12 15:40:09,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 15:40:09,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:09,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:09,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:09,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 20 proven. 64 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-12 15:40:09,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544794635] [2020-10-12 15:40:09,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:09,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:40:09,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551381426] [2020-10-12 15:40:09,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:40:09,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:09,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:40:09,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:40:09,422 INFO L87 Difference]: Start difference. First operand 228 states and 234 transitions. Second operand 16 states. [2020-10-12 15:40:10,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:10,245 INFO L93 Difference]: Finished difference Result 242 states and 248 transitions. [2020-10-12 15:40:10,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:40:10,246 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2020-10-12 15:40:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:10,247 INFO L225 Difference]: With dead ends: 242 [2020-10-12 15:40:10,248 INFO L226 Difference]: Without dead ends: 187 [2020-10-12 15:40:10,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:40:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-12 15:40:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-12 15:40:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-12 15:40:10,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 192 transitions. [2020-10-12 15:40:10,269 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 192 transitions. Word has length 78 [2020-10-12 15:40:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:10,269 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 192 transitions. [2020-10-12 15:40:10,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:40:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 192 transitions. [2020-10-12 15:40:10,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 15:40:10,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:10,271 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:10,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 15:40:10,272 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:10,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:10,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1413032411, now seen corresponding path program 15 times [2020-10-12 15:40:10,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:10,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176526047] [2020-10-12 15:40:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:10,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:11,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:11,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 15:40:11,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:40:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1408 [2020-10-12 15:40:11,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:40:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:11,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 15:40:11,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:12,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:12,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:12,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:40:12,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176526047] [2020-10-12 15:40:12,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:12,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:40:12,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068790952] [2020-10-12 15:40:12,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:40:12,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:12,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:40:12,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:40:12,701 INFO L87 Difference]: Start difference. First operand 187 states and 192 transitions. Second operand 18 states. [2020-10-12 15:40:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:14,068 INFO L93 Difference]: Finished difference Result 213 states and 218 transitions. [2020-10-12 15:40:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:40:14,069 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-12 15:40:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:14,071 INFO L225 Difference]: With dead ends: 213 [2020-10-12 15:40:14,071 INFO L226 Difference]: Without dead ends: 189 [2020-10-12 15:40:14,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:40:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-12 15:40:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2020-10-12 15:40:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-12 15:40:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 191 transitions. [2020-10-12 15:40:14,092 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 191 transitions. Word has length 78 [2020-10-12 15:40:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:14,092 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 191 transitions. [2020-10-12 15:40:14,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:40:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 191 transitions. [2020-10-12 15:40:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 15:40:14,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:14,094 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:14,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 15:40:14,094 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash -764059605, now seen corresponding path program 16 times [2020-10-12 15:40:14,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:14,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134752161] [2020-10-12 15:40:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:14,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:40:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:16,099 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-10-12 15:40:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:16,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:16,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:16,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:40:16,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134752161] [2020-10-12 15:40:16,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:16,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:40:16,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063417115] [2020-10-12 15:40:16,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:40:16,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:16,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:40:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:40:16,520 INFO L87 Difference]: Start difference. First operand 187 states and 191 transitions. Second operand 19 states. [2020-10-12 15:40:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:17,739 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2020-10-12 15:40:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:40:17,739 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-12 15:40:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:17,741 INFO L225 Difference]: With dead ends: 197 [2020-10-12 15:40:17,741 INFO L226 Difference]: Without dead ends: 195 [2020-10-12 15:40:17,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:40:17,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-12 15:40:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 155. [2020-10-12 15:40:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-12 15:40:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2020-10-12 15:40:17,753 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 80 [2020-10-12 15:40:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:17,753 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2020-10-12 15:40:17,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:40:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2020-10-12 15:40:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 15:40:17,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:17,754 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:17,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 15:40:17,754 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:17,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:17,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1585975188, now seen corresponding path program 13 times [2020-10-12 15:40:17,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:17,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232118278] [2020-10-12 15:40:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:17,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:18,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:18,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 15:40:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-12 15:40:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:40:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:40:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:19,384 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-12 15:40:19,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:19,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:19,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:19,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:19,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:40:19,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232118278] [2020-10-12 15:40:19,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:19,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:40:19,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952501840] [2020-10-12 15:40:19,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:40:19,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:19,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:40:19,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:40:19,815 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand 19 states. [2020-10-12 15:40:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:21,651 INFO L93 Difference]: Finished difference Result 175 states and 180 transitions. [2020-10-12 15:40:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:40:21,651 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-12 15:40:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:21,653 INFO L225 Difference]: With dead ends: 175 [2020-10-12 15:40:21,653 INFO L226 Difference]: Without dead ends: 173 [2020-10-12 15:40:21,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:40:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-12 15:40:21,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 161. [2020-10-12 15:40:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-12 15:40:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 166 transitions. [2020-10-12 15:40:21,666 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 166 transitions. Word has length 80 [2020-10-12 15:40:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:21,666 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 166 transitions. [2020-10-12 15:40:21,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:40:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 166 transitions. [2020-10-12 15:40:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 15:40:21,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:21,667 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:21,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 15:40:21,668 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:21,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1703306032, now seen corresponding path program 16 times [2020-10-12 15:40:21,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:21,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863468636] [2020-10-12 15:40:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:21,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:22,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:26,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:26,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 15:40:26,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:40:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:40:26,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:40:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 15:40:26,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 15:40:26,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:26,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:26,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:26,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:26,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:26,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 15:40:26,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863468636] [2020-10-12 15:40:26,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:26,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:40:26,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542565140] [2020-10-12 15:40:26,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:40:26,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:26,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:40:26,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:40:26,936 INFO L87 Difference]: Start difference. First operand 161 states and 166 transitions. Second operand 16 states. [2020-10-12 15:40:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:27,634 INFO L93 Difference]: Finished difference Result 197 states and 202 transitions. [2020-10-12 15:40:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:40:27,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-12 15:40:27,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:27,636 INFO L225 Difference]: With dead ends: 197 [2020-10-12 15:40:27,636 INFO L226 Difference]: Without dead ends: 193 [2020-10-12 15:40:27,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:40:27,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-12 15:40:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 163. [2020-10-12 15:40:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-12 15:40:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 168 transitions. [2020-10-12 15:40:27,649 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 168 transitions. Word has length 84 [2020-10-12 15:40:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:27,649 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 168 transitions. [2020-10-12 15:40:27,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:40:27,649 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 168 transitions. [2020-10-12 15:40:27,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 15:40:27,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:27,650 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:27,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 15:40:27,650 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:27,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1606680876, now seen corresponding path program 17 times [2020-10-12 15:40:27,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:27,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812582171] [2020-10-12 15:40:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:29,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:29,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 15:40:29,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:40:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2074 [2020-10-12 15:40:29,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:40:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:29,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:40:29,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:30,169 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-12 15:40:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:30,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:30,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:30,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:40:30,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812582171] [2020-10-12 15:40:30,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:30,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:40:30,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940744727] [2020-10-12 15:40:30,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:40:30,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:30,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:40:30,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:40:30,794 INFO L87 Difference]: Start difference. First operand 163 states and 168 transitions. Second operand 19 states. [2020-10-12 15:40:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:32,481 INFO L93 Difference]: Finished difference Result 278 states and 285 transitions. [2020-10-12 15:40:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:40:32,482 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2020-10-12 15:40:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:32,484 INFO L225 Difference]: With dead ends: 278 [2020-10-12 15:40:32,484 INFO L226 Difference]: Without dead ends: 252 [2020-10-12 15:40:32,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:40:32,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-12 15:40:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 208. [2020-10-12 15:40:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-12 15:40:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 214 transitions. [2020-10-12 15:40:32,500 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 214 transitions. Word has length 84 [2020-10-12 15:40:32,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:32,501 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 214 transitions. [2020-10-12 15:40:32,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:40:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 214 transitions. [2020-10-12 15:40:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 15:40:32,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:32,502 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:32,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 15:40:32,502 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:32,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:32,502 INFO L82 PathProgramCache]: Analyzing trace with hash -447784405, now seen corresponding path program 17 times [2020-10-12 15:40:32,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:32,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969506727] [2020-10-12 15:40:32,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:32,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:33,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:37,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 15:40:37,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:37,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:37,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:37,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 15:40:37,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969506727] [2020-10-12 15:40:37,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:37,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:40:37,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331333225] [2020-10-12 15:40:37,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:40:37,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:40:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:40:37,858 INFO L87 Difference]: Start difference. First operand 208 states and 214 transitions. Second operand 18 states. [2020-10-12 15:40:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:38,728 INFO L93 Difference]: Finished difference Result 264 states and 270 transitions. [2020-10-12 15:40:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:40:38,729 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 86 [2020-10-12 15:40:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:38,731 INFO L225 Difference]: With dead ends: 264 [2020-10-12 15:40:38,731 INFO L226 Difference]: Without dead ends: 260 [2020-10-12 15:40:38,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:40:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-12 15:40:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 250. [2020-10-12 15:40:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-12 15:40:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 256 transitions. [2020-10-12 15:40:38,750 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 256 transitions. Word has length 86 [2020-10-12 15:40:38,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:38,750 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 256 transitions. [2020-10-12 15:40:38,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:40:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 256 transitions. [2020-10-12 15:40:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 15:40:38,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:38,752 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:38,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 15:40:38,752 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:38,752 INFO L82 PathProgramCache]: Analyzing trace with hash 173394051, now seen corresponding path program 14 times [2020-10-12 15:40:38,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:38,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490623089] [2020-10-12 15:40:38,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:39,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1114 [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 15:40:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:40,569 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-10-12 15:40:40,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:40,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:40,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:40,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:40,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:40:41,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490623089] [2020-10-12 15:40:41,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:41,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:40:41,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764043259] [2020-10-12 15:40:41,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:40:41,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:40:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:40:41,008 INFO L87 Difference]: Start difference. First operand 250 states and 256 transitions. Second operand 20 states. [2020-10-12 15:40:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:42,628 INFO L93 Difference]: Finished difference Result 294 states and 302 transitions. [2020-10-12 15:40:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:40:42,629 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2020-10-12 15:40:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:42,630 INFO L225 Difference]: With dead ends: 294 [2020-10-12 15:40:42,630 INFO L226 Difference]: Without dead ends: 260 [2020-10-12 15:40:42,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:40:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-12 15:40:42,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2020-10-12 15:40:42,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-12 15:40:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 262 transitions. [2020-10-12 15:40:42,648 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 262 transitions. Word has length 86 [2020-10-12 15:40:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:42,648 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 262 transitions. [2020-10-12 15:40:42,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:40:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 262 transitions. [2020-10-12 15:40:42,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 15:40:42,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:42,649 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:42,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 15:40:42,650 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:42,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:42,650 INFO L82 PathProgramCache]: Analyzing trace with hash -777311034, now seen corresponding path program 18 times [2020-10-12 15:40:42,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:42,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979919177] [2020-10-12 15:40:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:42,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:43,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:45,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:47,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:47,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 15:40:47,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:40:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 15:40:47,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:40:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 15:40:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 15:40:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:48,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:48,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:48,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 15:40:48,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979919177] [2020-10-12 15:40:48,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:48,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:40:48,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245926508] [2020-10-12 15:40:48,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:40:48,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:48,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:40:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:40:48,094 INFO L87 Difference]: Start difference. First operand 256 states and 262 transitions. Second operand 20 states. [2020-10-12 15:40:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:49,193 INFO L93 Difference]: Finished difference Result 278 states and 284 transitions. [2020-10-12 15:40:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:40:49,193 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-10-12 15:40:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:49,195 INFO L225 Difference]: With dead ends: 278 [2020-10-12 15:40:49,195 INFO L226 Difference]: Without dead ends: 274 [2020-10-12 15:40:49,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:40:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-12 15:40:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 258. [2020-10-12 15:40:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-12 15:40:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 264 transitions. [2020-10-12 15:40:49,212 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 264 transitions. Word has length 88 [2020-10-12 15:40:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:49,213 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 264 transitions. [2020-10-12 15:40:49,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:40:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 264 transitions. [2020-10-12 15:40:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 15:40:49,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:49,214 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:49,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 15:40:49,214 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash -690937603, now seen corresponding path program 18 times [2020-10-12 15:40:49,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:49,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042350697] [2020-10-12 15:40:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:51,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:51,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 15:40:51,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:40:51,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2476 [2020-10-12 15:40:51,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:40:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:51,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 15:40:51,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:52,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:52,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:52,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:40:52,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042350697] [2020-10-12 15:40:52,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:52,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:40:52,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389244716] [2020-10-12 15:40:52,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:40:52,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:52,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:40:52,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:40:52,877 INFO L87 Difference]: Start difference. First operand 258 states and 264 transitions. Second operand 20 states. [2020-10-12 15:40:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:54,672 INFO L93 Difference]: Finished difference Result 286 states and 292 transitions. [2020-10-12 15:40:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:40:54,673 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-10-12 15:40:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:54,675 INFO L225 Difference]: With dead ends: 286 [2020-10-12 15:40:54,675 INFO L226 Difference]: Without dead ends: 260 [2020-10-12 15:40:54,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:40:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-12 15:40:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2020-10-12 15:40:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-12 15:40:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 263 transitions. [2020-10-12 15:40:54,690 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 263 transitions. Word has length 88 [2020-10-12 15:40:54,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:54,690 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 263 transitions. [2020-10-12 15:40:54,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:40:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 263 transitions. [2020-10-12 15:40:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 15:40:54,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:54,692 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:54,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-12 15:40:54,692 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 375178401, now seen corresponding path program 19 times [2020-10-12 15:40:54,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:54,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380991911] [2020-10-12 15:40:54,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:54,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:59,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:59,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 15:40:59,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:40:59,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 15:40:59,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:59,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:40:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 15:40:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 15:40:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:00,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:00,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:00,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:00,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:00,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:00,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:00,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:00,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:00,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:00,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 24 proven. 100 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 15:41:00,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380991911] [2020-10-12 15:41:00,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:00,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:41:00,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816718905] [2020-10-12 15:41:00,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:41:00,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:41:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:41:00,065 INFO L87 Difference]: Start difference. First operand 258 states and 263 transitions. Second operand 18 states. [2020-10-12 15:41:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:00,882 INFO L93 Difference]: Finished difference Result 274 states and 279 transitions. [2020-10-12 15:41:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:41:00,882 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-10-12 15:41:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:00,884 INFO L225 Difference]: With dead ends: 274 [2020-10-12 15:41:00,884 INFO L226 Difference]: Without dead ends: 211 [2020-10-12 15:41:00,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:41:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-12 15:41:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-10-12 15:41:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-12 15:41:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 215 transitions. [2020-10-12 15:41:00,900 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 215 transitions. Word has length 90 [2020-10-12 15:41:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:00,900 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 215 transitions. [2020-10-12 15:41:00,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:41:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 215 transitions. [2020-10-12 15:41:00,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 15:41:00,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:00,901 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:00,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-12 15:41:00,901 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash -879384509, now seen corresponding path program 19 times [2020-10-12 15:41:00,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:00,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012392166] [2020-10-12 15:41:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:02,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1304 [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 15:41:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:02,847 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-12 15:41:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:03,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:03,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:03,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:03,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:03,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:03,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012392166] [2020-10-12 15:41:03,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:03,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:41:03,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821572475] [2020-10-12 15:41:03,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:41:03,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:03,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:41:03,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:41:03,454 INFO L87 Difference]: Start difference. First operand 211 states and 215 transitions. Second operand 21 states. [2020-10-12 15:41:05,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:05,012 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2020-10-12 15:41:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:41:05,013 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-12 15:41:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:05,014 INFO L225 Difference]: With dead ends: 221 [2020-10-12 15:41:05,015 INFO L226 Difference]: Without dead ends: 219 [2020-10-12 15:41:05,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:41:05,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-12 15:41:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 173. [2020-10-12 15:41:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-12 15:41:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 177 transitions. [2020-10-12 15:41:05,029 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 177 transitions. Word has length 90 [2020-10-12 15:41:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:05,030 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 177 transitions. [2020-10-12 15:41:05,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:41:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 177 transitions. [2020-10-12 15:41:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 15:41:05,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:05,030 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:05,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-12 15:41:05,031 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:05,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:05,031 INFO L82 PathProgramCache]: Analyzing trace with hash -265616276, now seen corresponding path program 15 times [2020-10-12 15:41:05,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:05,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659282377] [2020-10-12 15:41:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:06,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 15:41:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:07,459 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-12 15:41:07,629 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-12 15:41:08,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:08,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:08,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:08,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:08,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659282377] [2020-10-12 15:41:08,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:08,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:41:08,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391881899] [2020-10-12 15:41:08,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:41:08,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:08,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:41:08,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:41:08,194 INFO L87 Difference]: Start difference. First operand 173 states and 177 transitions. Second operand 21 states. [2020-10-12 15:41:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:10,532 INFO L93 Difference]: Finished difference Result 193 states and 198 transitions. [2020-10-12 15:41:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:41:10,533 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-12 15:41:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:10,535 INFO L225 Difference]: With dead ends: 193 [2020-10-12 15:41:10,535 INFO L226 Difference]: Without dead ends: 191 [2020-10-12 15:41:10,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:41:10,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-12 15:41:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 179. [2020-10-12 15:41:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-12 15:41:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 184 transitions. [2020-10-12 15:41:10,546 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 184 transitions. Word has length 90 [2020-10-12 15:41:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:10,547 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 184 transitions. [2020-10-12 15:41:10,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:41:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 184 transitions. [2020-10-12 15:41:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 15:41:10,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:10,548 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:10,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-12 15:41:10,548 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:10,548 INFO L82 PathProgramCache]: Analyzing trace with hash 187221932, now seen corresponding path program 20 times [2020-10-12 15:41:10,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:10,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598965960] [2020-10-12 15:41:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:10,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:13,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3160 [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 15:41:13,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:14,415 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-12 15:41:15,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:15,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:15,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:15,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:15,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:15,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598965960] [2020-10-12 15:41:15,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:15,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:41:15,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832632654] [2020-10-12 15:41:15,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:41:15,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:15,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:41:15,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:41:15,185 INFO L87 Difference]: Start difference. First operand 179 states and 184 transitions. Second operand 21 states. [2020-10-12 15:41:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:17,636 INFO L93 Difference]: Finished difference Result 306 states and 313 transitions. [2020-10-12 15:41:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:41:17,637 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2020-10-12 15:41:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:17,638 INFO L225 Difference]: With dead ends: 306 [2020-10-12 15:41:17,638 INFO L226 Difference]: Without dead ends: 280 [2020-10-12 15:41:17,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:41:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-12 15:41:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 230. [2020-10-12 15:41:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-12 15:41:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 236 transitions. [2020-10-12 15:41:17,651 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 236 transitions. Word has length 94 [2020-10-12 15:41:17,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:17,651 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 236 transitions. [2020-10-12 15:41:17,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:41:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 236 transitions. [2020-10-12 15:41:17,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 15:41:17,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:17,652 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:17,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-12 15:41:17,653 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:17,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1962052733, now seen corresponding path program 20 times [2020-10-12 15:41:17,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:17,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051564923] [2020-10-12 15:41:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:17,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:22,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:22,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:41:22,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:41:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 15:41:22,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:22,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:41:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 15:41:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 15:41:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:22,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:22,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:22,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:22,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 15:41:23,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051564923] [2020-10-12 15:41:23,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:23,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:41:23,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760279700] [2020-10-12 15:41:23,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:41:23,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:23,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:41:23,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:41:23,018 INFO L87 Difference]: Start difference. First operand 230 states and 236 transitions. Second operand 18 states. [2020-10-12 15:41:23,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:23,956 INFO L93 Difference]: Finished difference Result 272 states and 278 transitions. [2020-10-12 15:41:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:41:23,956 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 96 [2020-10-12 15:41:23,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:23,958 INFO L225 Difference]: With dead ends: 272 [2020-10-12 15:41:23,958 INFO L226 Difference]: Without dead ends: 268 [2020-10-12 15:41:23,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:41:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-12 15:41:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 232. [2020-10-12 15:41:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-12 15:41:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 238 transitions. [2020-10-12 15:41:23,976 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 238 transitions. Word has length 96 [2020-10-12 15:41:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:23,977 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 238 transitions. [2020-10-12 15:41:23,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:41:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 238 transitions. [2020-10-12 15:41:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 15:41:23,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:23,978 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:23,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-12 15:41:23,978 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:23,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:23,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1832106843, now seen corresponding path program 16 times [2020-10-12 15:41:23,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:23,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399981786] [2020-10-12 15:41:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:24,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:25,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1599 [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 15:41:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:26,351 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-12 15:41:26,573 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-12 15:41:26,756 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-10-12 15:41:26,983 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2020-10-12 15:41:27,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:27,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 16 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:27,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399981786] [2020-10-12 15:41:27,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:27,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:41:27,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725909285] [2020-10-12 15:41:27,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:41:27,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:27,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:41:27,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:41:27,550 INFO L87 Difference]: Start difference. First operand 232 states and 238 transitions. Second operand 22 states. [2020-10-12 15:41:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:29,802 INFO L93 Difference]: Finished difference Result 320 states and 328 transitions. [2020-10-12 15:41:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:41:29,803 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2020-10-12 15:41:29,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:29,804 INFO L225 Difference]: With dead ends: 320 [2020-10-12 15:41:29,804 INFO L226 Difference]: Without dead ends: 284 [2020-10-12 15:41:29,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:41:29,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-12 15:41:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 238. [2020-10-12 15:41:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-12 15:41:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 244 transitions. [2020-10-12 15:41:29,818 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 244 transitions. Word has length 96 [2020-10-12 15:41:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:29,818 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 244 transitions. [2020-10-12 15:41:29,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:41:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 244 transitions. [2020-10-12 15:41:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 15:41:29,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:29,820 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:29,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-12 15:41:29,820 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:29,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:29,820 INFO L82 PathProgramCache]: Analyzing trace with hash 4739102, now seen corresponding path program 21 times [2020-10-12 15:41:29,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:29,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761422012] [2020-10-12 15:41:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:30,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:30,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:34,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 15:41:34,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:35,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:35,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:35,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:35,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:35,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 15:41:35,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761422012] [2020-10-12 15:41:35,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:35,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:41:35,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927354288] [2020-10-12 15:41:35,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:41:35,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:35,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:41:35,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:41:35,286 INFO L87 Difference]: Start difference. First operand 238 states and 244 transitions. Second operand 20 states. [2020-10-12 15:41:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:36,396 INFO L93 Difference]: Finished difference Result 302 states and 308 transitions. [2020-10-12 15:41:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:41:36,397 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2020-10-12 15:41:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:36,399 INFO L225 Difference]: With dead ends: 302 [2020-10-12 15:41:36,399 INFO L226 Difference]: Without dead ends: 298 [2020-10-12 15:41:36,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:41:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-12 15:41:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 286. [2020-10-12 15:41:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-12 15:41:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 292 transitions. [2020-10-12 15:41:36,419 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 292 transitions. Word has length 98 [2020-10-12 15:41:36,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:36,420 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 292 transitions. [2020-10-12 15:41:36,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:41:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 292 transitions. [2020-10-12 15:41:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 15:41:36,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:36,421 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:36,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-12 15:41:36,421 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:36,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:36,421 INFO L82 PathProgramCache]: Analyzing trace with hash 64752277, now seen corresponding path program 21 times [2020-10-12 15:41:36,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:36,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181879892] [2020-10-12 15:41:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:36,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:39,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3273 [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 15:41:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:40,373 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-12 15:41:40,603 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-12 15:41:41,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:41,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:41,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:41,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181879892] [2020-10-12 15:41:41,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:41,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:41:41,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338680853] [2020-10-12 15:41:41,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:41:41,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:41,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:41:41,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:41:41,375 INFO L87 Difference]: Start difference. First operand 286 states and 292 transitions. Second operand 22 states. [2020-10-12 15:41:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:43,681 INFO L93 Difference]: Finished difference Result 316 states and 322 transitions. [2020-10-12 15:41:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:41:43,683 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-10-12 15:41:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:43,684 INFO L225 Difference]: With dead ends: 316 [2020-10-12 15:41:43,684 INFO L226 Difference]: Without dead ends: 288 [2020-10-12 15:41:43,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:41:43,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-12 15:41:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2020-10-12 15:41:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-12 15:41:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 291 transitions. [2020-10-12 15:41:43,700 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 291 transitions. Word has length 98 [2020-10-12 15:41:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:43,700 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 291 transitions. [2020-10-12 15:41:43,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:41:43,700 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 291 transitions. [2020-10-12 15:41:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 15:41:43,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:43,701 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:43,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-12 15:41:43,702 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:43,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:43,702 INFO L82 PathProgramCache]: Analyzing trace with hash 306082297, now seen corresponding path program 22 times [2020-10-12 15:41:43,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:43,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678986212] [2020-10-12 15:41:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:43,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 15:41:48,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:41:48,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 15:41:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:41:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 15:41:48,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 15:41:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:49,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:49,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:49,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:49,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:49,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:49,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 14 proven. 144 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-12 15:41:49,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678986212] [2020-10-12 15:41:49,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:49,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 15:41:49,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637627841] [2020-10-12 15:41:49,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 15:41:49,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:49,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 15:41:49,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:41:49,168 INFO L87 Difference]: Start difference. First operand 286 states and 291 transitions. Second operand 20 states. [2020-10-12 15:41:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:50,253 INFO L93 Difference]: Finished difference Result 304 states and 309 transitions. [2020-10-12 15:41:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:41:50,254 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 100 [2020-10-12 15:41:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:50,255 INFO L225 Difference]: With dead ends: 304 [2020-10-12 15:41:50,255 INFO L226 Difference]: Without dead ends: 235 [2020-10-12 15:41:50,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:41:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-12 15:41:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2020-10-12 15:41:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-12 15:41:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 239 transitions. [2020-10-12 15:41:50,273 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 239 transitions. Word has length 100 [2020-10-12 15:41:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:50,274 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 239 transitions. [2020-10-12 15:41:50,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 15:41:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 239 transitions. [2020-10-12 15:41:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 15:41:50,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:50,275 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:50,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-12 15:41:50,275 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:50,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:50,275 INFO L82 PathProgramCache]: Analyzing trace with hash -703697125, now seen corresponding path program 22 times [2020-10-12 15:41:50,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:50,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006211255] [2020-10-12 15:41:50,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:50,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:52,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:52,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 15:41:52,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1760 [2020-10-12 15:41:52,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:41:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:52,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 15:41:52,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:53,182 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-12 15:41:53,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:53,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:53,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:53,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:53,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:53,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:53,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:53,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006211255] [2020-10-12 15:41:53,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:53,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:41:53,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585016432] [2020-10-12 15:41:53,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:41:53,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:53,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:41:53,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:41:53,769 INFO L87 Difference]: Start difference. First operand 235 states and 239 transitions. Second operand 23 states. [2020-10-12 15:41:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:41:55,821 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2020-10-12 15:41:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:41:55,822 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-12 15:41:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:41:55,823 INFO L225 Difference]: With dead ends: 245 [2020-10-12 15:41:55,823 INFO L226 Difference]: Without dead ends: 243 [2020-10-12 15:41:55,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:41:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-12 15:41:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 191. [2020-10-12 15:41:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-12 15:41:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 195 transitions. [2020-10-12 15:41:55,840 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 195 transitions. Word has length 100 [2020-10-12 15:41:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:41:55,841 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 195 transitions. [2020-10-12 15:41:55,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:41:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 195 transitions. [2020-10-12 15:41:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 15:41:55,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:41:55,841 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:41:55,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-12 15:41:55,841 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:41:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:41:55,842 INFO L82 PathProgramCache]: Analyzing trace with hash 102885380, now seen corresponding path program 17 times [2020-10-12 15:41:55,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:41:55,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776611000] [2020-10-12 15:41:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:41:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:56,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 15:41:57,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:58,445 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-10-12 15:41:58,859 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-10-12 15:41:59,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:59,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:59,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:59,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:59,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:59,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:59,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:59,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:59,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:41:59,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776611000] [2020-10-12 15:41:59,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:41:59,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:41:59,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184751297] [2020-10-12 15:41:59,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:41:59,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:41:59,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:41:59,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:41:59,411 INFO L87 Difference]: Start difference. First operand 191 states and 195 transitions. Second operand 23 states. [2020-10-12 15:42:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:02,402 INFO L93 Difference]: Finished difference Result 205 states and 210 transitions. [2020-10-12 15:42:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:42:02,403 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-12 15:42:02,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:02,404 INFO L225 Difference]: With dead ends: 205 [2020-10-12 15:42:02,404 INFO L226 Difference]: Without dead ends: 203 [2020-10-12 15:42:02,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:42:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-12 15:42:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-10-12 15:42:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-12 15:42:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 202 transitions. [2020-10-12 15:42:02,417 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 202 transitions. Word has length 100 [2020-10-12 15:42:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:02,417 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 202 transitions. [2020-10-12 15:42:02,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:42:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 202 transitions. [2020-10-12 15:42:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 15:42:02,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:02,418 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:02,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-12 15:42:02,418 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:02,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:02,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1118560444, now seen corresponding path program 23 times [2020-10-12 15:42:02,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:02,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922486191] [2020-10-12 15:42:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:02,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:04,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:06,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:06,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 15:42:06,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:42:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3881 [2020-10-12 15:42:06,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:42:06,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:42:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 15:42:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:07,212 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-12 15:42:07,430 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-12 15:42:07,709 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-10-12 15:42:07,954 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-12 15:42:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:42:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:42:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:42:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:42:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:42:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:42:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:42:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:42:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:42:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:42:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:42:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:42:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:42:08,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922486191] [2020-10-12 15:42:08,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:42:08,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:42:08,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024200283] [2020-10-12 15:42:08,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:42:08,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:42:08,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:42:08,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:42:08,586 INFO L87 Difference]: Start difference. First operand 197 states and 202 transitions. Second operand 23 states. [2020-10-12 15:42:11,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:42:11,736 INFO L93 Difference]: Finished difference Result 279 states and 284 transitions. [2020-10-12 15:42:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:42:11,737 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 104 [2020-10-12 15:42:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:42:11,739 INFO L225 Difference]: With dead ends: 279 [2020-10-12 15:42:11,739 INFO L226 Difference]: Without dead ends: 251 [2020-10-12 15:42:11,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:42:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-12 15:42:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 197. [2020-10-12 15:42:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-12 15:42:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 201 transitions. [2020-10-12 15:42:11,752 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 201 transitions. Word has length 104 [2020-10-12 15:42:11,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:42:11,752 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 201 transitions. [2020-10-12 15:42:11,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:42:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 201 transitions. [2020-10-12 15:42:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 15:42:11,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:42:11,753 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:42:11,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-12 15:42:11,753 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:42:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:42:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1105693939, now seen corresponding path program 18 times [2020-10-12 15:42:11,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:42:11,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087540915] [2020-10-12 15:42:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:42:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat