/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:17,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:17,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:17,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:17,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:17,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:17,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:17,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:17,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:17,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:17,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:17,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:17,831 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:17,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:17,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:17,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:17,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:17,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:17,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:17,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:17,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:17,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:17,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:17,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:17,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:17,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:17,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:17,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:17,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:17,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:17,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:17,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:17,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:17,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:17,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:17,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:17,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:17,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:17,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:17,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:17,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:17,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:21:17,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:17,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:17,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:17,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:17,938 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:17,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:17,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:17,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:17,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:17,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:17,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:17,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:17,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:17,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:17,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:17,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:17,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:17,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:17,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:17,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:17,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:17,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:17,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:17,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:17,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:17,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:17,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:17,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:17,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:17,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:21:18,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:18,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:18,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:18,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:18,255 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:18,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-1.i [2020-10-13 10:21:18,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b6207e28/b22ae019f0ae466fa811d82034d100e5/FLAG06a1a3645 [2020-10-13 10:21:18,866 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:18,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-1.i [2020-10-13 10:21:18,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b6207e28/b22ae019f0ae466fa811d82034d100e5/FLAG06a1a3645 [2020-10-13 10:21:19,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b6207e28/b22ae019f0ae466fa811d82034d100e5 [2020-10-13 10:21:19,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:19,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:19,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:19,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:19,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:19,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ff56ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19, skipping insertion in model container [2020-10-13 10:21:19,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:19,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:19,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:19,696 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:19,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:19,827 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:19,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19 WrapperNode [2020-10-13 10:21:19,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:19,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:19,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:19,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:19,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... [2020-10-13 10:21:19,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:19,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:19,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:19,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:19,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:19,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:19,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:19,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:19,977 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:19,978 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:19,979 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:19,980 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:19,980 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:19,980 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:19,980 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:19,980 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:19,980 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:19,981 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:19,982 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:19,983 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:19,984 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:19,985 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:19,986 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:21:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:21:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:20,566 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:20,567 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-13 10:21:20,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:20 BoogieIcfgContainer [2020-10-13 10:21:20,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:20,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:20,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:20,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:20,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:19" (1/3) ... [2020-10-13 10:21:20,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aef0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:20, skipping insertion in model container [2020-10-13 10:21:20,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:19" (2/3) ... [2020-10-13 10:21:20,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aef0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:20, skipping insertion in model container [2020-10-13 10:21:20,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:20" (3/3) ... [2020-10-13 10:21:20,580 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2020-10-13 10:21:20,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:20,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-13 10:21:20,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-13 10:21:20,644 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:20,645 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:20,645 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:20,645 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:20,645 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:20,646 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:20,646 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:20,646 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-13 10:21:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:21:20,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:20,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:20,677 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:20,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:20,684 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-10-13 10:21:20,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:20,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117390046] [2020-10-13 10:21:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:20,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:21:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-13 10:21:21,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:21,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:21:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:21,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:21,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:21:21,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:21,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:21,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:21,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:21,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117390046] [2020-10-13 10:21:21,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:21,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:21:21,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458016070] [2020-10-13 10:21:21,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:21:21,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:21,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:21:21,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:21,372 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-10-13 10:21:21,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:21,519 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2020-10-13 10:21:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:21:21,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:21:21,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:21,532 INFO L225 Difference]: With dead ends: 92 [2020-10-13 10:21:21,533 INFO L226 Difference]: Without dead ends: 43 [2020-10-13 10:21:21,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:21,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-13 10:21:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-13 10:21:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 10:21:21,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-13 10:21:21,575 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2020-10-13 10:21:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:21,576 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-13 10:21:21,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:21:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-13 10:21:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:21:21,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:21,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:21,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:21,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:21,578 INFO L82 PathProgramCache]: Analyzing trace with hash 67663975, now seen corresponding path program 1 times [2020-10-13 10:21:21,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:21,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826321570] [2020-10-13 10:21:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:21:21,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:21,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 10:21:21,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:21:21,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:21,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:21,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:21,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:21,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:21,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:21,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:21,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826321570] [2020-10-13 10:21:21,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:21,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:21,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135920240] [2020-10-13 10:21:21,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:21,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:21,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:21,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:21,746 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2020-10-13 10:21:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:21,877 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-13 10:21:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:21,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-13 10:21:21,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:21,879 INFO L225 Difference]: With dead ends: 43 [2020-10-13 10:21:21,879 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 10:21:21,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 10:21:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-13 10:21:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:21:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-13 10:21:21,888 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2020-10-13 10:21:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:21,888 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-13 10:21:21,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-13 10:21:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:21:21,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:21,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:21,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:21,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2097539711, now seen corresponding path program 1 times [2020-10-13 10:21:21,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:21,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789799133] [2020-10-13 10:21:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:21,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:21:21,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:21,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 10:21:21,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:21,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:21,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:22,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:22,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:22,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:22,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789799133] [2020-10-13 10:21:22,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:22,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:22,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949578916] [2020-10-13 10:21:22,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:22,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:22,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:22,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:22,033 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2020-10-13 10:21:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:22,180 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-10-13 10:21:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:22,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-13 10:21:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:22,183 INFO L225 Difference]: With dead ends: 67 [2020-10-13 10:21:22,183 INFO L226 Difference]: Without dead ends: 65 [2020-10-13 10:21:22,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-13 10:21:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-10-13 10:21:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:21:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-13 10:21:22,193 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-10-13 10:21:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:22,194 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-13 10:21:22,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-13 10:21:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:21:22,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:22,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:22,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:22,196 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-10-13 10:21:22,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:22,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060698210] [2020-10-13 10:21:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:21:22,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:22,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 10:21:22,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:22,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:22,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:21:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:22,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:22,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:22,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:22,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:22,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060698210] [2020-10-13 10:21:22,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:22,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:22,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709503483] [2020-10-13 10:21:22,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:22,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:22,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:22,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:22,585 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-10-13 10:21:22,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:22,730 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-13 10:21:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:22,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-13 10:21:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:22,732 INFO L225 Difference]: With dead ends: 39 [2020-10-13 10:21:22,732 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 10:21:22,732 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 [2020-10-13 10:21:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 10:21:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-13 10:21:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 10:21:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-13 10:21:22,738 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 16 [2020-10-13 10:21:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:22,739 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-13 10:21:22,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-13 10:21:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:21:22,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:22,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:22,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:22,741 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash -409960037, now seen corresponding path program 1 times [2020-10-13 10:21:22,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:22,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798967345] [2020-10-13 10:21:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:21:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 10:21:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:21:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:22,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:22,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:22,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798967345] [2020-10-13 10:21:22,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:22,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:22,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475567291] [2020-10-13 10:21:22,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:22,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:22,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:22,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:22,915 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2020-10-13 10:21:23,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:23,105 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2020-10-13 10:21:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:23,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-13 10:21:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:23,106 INFO L225 Difference]: With dead ends: 72 [2020-10-13 10:21:23,106 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 10:21:23,107 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 [2020-10-13 10:21:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 10:21:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-13 10:21:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 10:21:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-13 10:21:23,114 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2020-10-13 10:21:23,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:23,115 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-13 10:21:23,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:23,115 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-13 10:21:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:23,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:23,116 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] [2020-10-13 10:21:23,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:23,117 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:23,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:23,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1407314597, now seen corresponding path program 1 times [2020-10-13 10:21:23,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:23,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651356019] [2020-10-13 10:21:23,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:23,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-13 10:21:23,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:21:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:23,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651356019] [2020-10-13 10:21:23,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:23,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:21:23,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483570816] [2020-10-13 10:21:23,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:23,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:23,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:23,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:23,360 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2020-10-13 10:21:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:23,667 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-10-13 10:21:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:23,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-13 10:21:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:23,669 INFO L225 Difference]: With dead ends: 54 [2020-10-13 10:21:23,669 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:21:23,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:21:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-13 10:21:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 10:21:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-13 10:21:23,678 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2020-10-13 10:21:23,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:23,678 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-13 10:21:23,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-13 10:21:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:23,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:23,680 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:23,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:23,681 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1742673852, now seen corresponding path program 1 times [2020-10-13 10:21:23,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:23,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960208066] [2020-10-13 10:21:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:23,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:23,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-13 10:21:23,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:21:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:24,231 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-10-13 10:21:24,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:24,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:24,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:21:24,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:24,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:24,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:24,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:24,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960208066] [2020-10-13 10:21:24,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:24,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:24,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215166740] [2020-10-13 10:21:24,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:24,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:24,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:24,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:24,305 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 7 states. [2020-10-13 10:21:24,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:24,738 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-10-13 10:21:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:24,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-13 10:21:24,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:24,739 INFO L225 Difference]: With dead ends: 62 [2020-10-13 10:21:24,740 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 10:21:24,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 10:21:24,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-13 10:21:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:21:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-13 10:21:24,752 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 20 [2020-10-13 10:21:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:24,752 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-13 10:21:24,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-13 10:21:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:24,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:24,754 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] [2020-10-13 10:21:24,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:24,754 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:24,755 INFO L82 PathProgramCache]: Analyzing trace with hash 995688324, now seen corresponding path program 1 times [2020-10-13 10:21:24,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:24,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379265311] [2020-10-13 10:21:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:25,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-13 10:21:25,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:25,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:21:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379265311] [2020-10-13 10:21:25,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:25,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:25,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570413892] [2020-10-13 10:21:25,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:25,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:25,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:25,472 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2020-10-13 10:21:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,803 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2020-10-13 10:21:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:25,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-13 10:21:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,804 INFO L225 Difference]: With dead ends: 72 [2020-10-13 10:21:25,804 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 10:21:25,805 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 [2020-10-13 10:21:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 10:21:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-13 10:21:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:21:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-13 10:21:25,818 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2020-10-13 10:21:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,820 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-13 10:21:25,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-13 10:21:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:21:25,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,822 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] [2020-10-13 10:21:25,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:25,822 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 961492076, now seen corresponding path program 1 times [2020-10-13 10:21:25,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43513953] [2020-10-13 10:21:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:21:26,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:26,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-13 10:21:26,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:21:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:21:26,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:26,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:26,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:26,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43513953] [2020-10-13 10:21:26,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:26,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:26,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892556146] [2020-10-13 10:21:26,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:26,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:26,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:26,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:26,461 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-10-13 10:21:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:26,640 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-10-13 10:21:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:26,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-13 10:21:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:26,642 INFO L225 Difference]: With dead ends: 54 [2020-10-13 10:21:26,643 INFO L226 Difference]: Without dead ends: 35 [2020-10-13 10:21:26,646 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 [2020-10-13 10:21:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-13 10:21:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-13 10:21:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 10:21:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-13 10:21:26,660 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 26 [2020-10-13 10:21:26,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:26,662 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-13 10:21:26,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-13 10:21:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:21:26,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:26,664 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] [2020-10-13 10:21:26,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:26,664 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:26,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1379228979, now seen corresponding path program 1 times [2020-10-13 10:21:26,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:26,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257279425] [2020-10-13 10:21:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:21:27,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-13 10:21:27,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:27,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:21:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:27,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:27,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:27,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:27,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:27,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:27,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257279425] [2020-10-13 10:21:27,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:27,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:27,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336274063] [2020-10-13 10:21:27,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:27,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:27,183 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2020-10-13 10:21:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:27,491 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-10-13 10:21:27,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:27,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-13 10:21:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:27,493 INFO L225 Difference]: With dead ends: 70 [2020-10-13 10:21:27,493 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:21:27,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:21:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-13 10:21:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 10:21:27,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-13 10:21:27,504 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 26 [2020-10-13 10:21:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:27,504 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-13 10:21:27,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-13 10:21:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:21:27,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:27,509 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] [2020-10-13 10:21:27,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:27,509 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:27,509 INFO L82 PathProgramCache]: Analyzing trace with hash 993748211, now seen corresponding path program 1 times [2020-10-13 10:21:27,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:27,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750868731] [2020-10-13 10:21:27,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:21:27,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-13 10:21:27,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:21:27,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:27,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:27,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:27,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:27,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750868731] [2020-10-13 10:21:27,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:27,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:27,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049412243] [2020-10-13 10:21:27,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:27,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:27,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:27,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:27,997 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 9 states. [2020-10-13 10:21:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:28,385 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-10-13 10:21:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:28,385 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-13 10:21:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:28,387 INFO L225 Difference]: With dead ends: 58 [2020-10-13 10:21:28,387 INFO L226 Difference]: Without dead ends: 39 [2020-10-13 10:21:28,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-13 10:21:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-13 10:21:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:21:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-13 10:21:28,399 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 30 [2020-10-13 10:21:28,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:28,400 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-13 10:21:28,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-13 10:21:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:21:28,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:28,405 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] [2020-10-13 10:21:28,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:28,405 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash -117947236, now seen corresponding path program 2 times [2020-10-13 10:21:28,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:28,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60892637] [2020-10-13 10:21:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:21:28,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-10-13 10:21:28,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:28,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:21:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:29,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:29,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:29,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:29,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:29,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:29,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:29,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:29,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60892637] [2020-10-13 10:21:29,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:29,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:29,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823433930] [2020-10-13 10:21:29,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:29,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:29,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:29,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:29,022 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 9 states. [2020-10-13 10:21:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:29,453 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2020-10-13 10:21:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:29,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-13 10:21:29,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:29,455 INFO L225 Difference]: With dead ends: 64 [2020-10-13 10:21:29,455 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 10:21:29,456 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 [2020-10-13 10:21:29,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 10:21:29,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-10-13 10:21:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 10:21:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-13 10:21:29,472 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 30 [2020-10-13 10:21:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:29,475 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-13 10:21:29,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-13 10:21:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 10:21:29,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:29,479 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] [2020-10-13 10:21:29,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:29,480 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:29,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:29,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1845129180, now seen corresponding path program 2 times [2020-10-13 10:21:29,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:29,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637930608] [2020-10-13 10:21:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:29,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:21:30,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-13 10:21:30,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:30,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:21:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:31,008 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-10-13 10:21:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:31,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:31,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:31,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:31,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:31,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:31,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637930608] [2020-10-13 10:21:31,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:31,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:31,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24760478] [2020-10-13 10:21:31,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:31,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:31,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:31,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:31,122 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 9 states. [2020-10-13 10:21:31,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:31,692 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-10-13 10:21:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:31,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-13 10:21:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:31,694 INFO L225 Difference]: With dead ends: 66 [2020-10-13 10:21:31,694 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 10:21:31,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 10:21:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-13 10:21:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-13 10:21:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-13 10:21:31,704 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 34 [2020-10-13 10:21:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:31,705 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-13 10:21:31,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-13 10:21:31,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-13 10:21:31,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:31,707 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] [2020-10-13 10:21:31,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:21:31,708 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:31,709 INFO L82 PathProgramCache]: Analyzing trace with hash 733433733, now seen corresponding path program 3 times [2020-10-13 10:21:31,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:31,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623935861] [2020-10-13 10:21:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 10:21:32,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-13 10:21:32,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:32,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:21:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:32,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:32,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623935861] [2020-10-13 10:21:32,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:32,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:32,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061532103] [2020-10-13 10:21:32,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:32,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:32,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:32,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:32,786 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 10 states. [2020-10-13 10:21:33,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:33,257 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-10-13 10:21:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:33,258 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-13 10:21:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:33,259 INFO L225 Difference]: With dead ends: 70 [2020-10-13 10:21:33,259 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 10:21:33,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 10:21:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-10-13 10:21:33,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:21:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-13 10:21:33,269 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 34 [2020-10-13 10:21:33,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:33,270 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-13 10:21:33,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-13 10:21:33,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:33,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:33,275 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] [2020-10-13 10:21:33,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:21:33,275 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:33,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:33,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1648105355, now seen corresponding path program 4 times [2020-10-13 10:21:33,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:33,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752867088] [2020-10-13 10:21:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:33,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-13 10:21:33,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:33,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:33,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:21:33,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:33,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:33,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:33,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752867088] [2020-10-13 10:21:33,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:33,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:33,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446324104] [2020-10-13 10:21:33,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:33,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:33,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:33,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:33,939 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 10 states. [2020-10-13 10:21:34,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:34,305 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-10-13 10:21:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:34,306 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-13 10:21:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:34,307 INFO L225 Difference]: With dead ends: 86 [2020-10-13 10:21:34,307 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 10:21:34,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:34,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 10:21:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-13 10:21:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 10:21:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-13 10:21:34,316 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 36 [2020-10-13 10:21:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:34,316 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-13 10:21:34,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-13 10:21:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:21:34,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:34,317 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] [2020-10-13 10:21:34,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:21:34,317 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:34,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1023943099, now seen corresponding path program 3 times [2020-10-13 10:21:34,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:34,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34054101] [2020-10-13 10:21:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:36,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:21:36,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1797 [2020-10-13 10:21:36,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:21:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:36,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:36,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:36,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:36,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:36,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:36,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:36,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34054101] [2020-10-13 10:21:36,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:36,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:36,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370288764] [2020-10-13 10:21:36,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:36,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:36,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:36,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:36,443 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 10 states. [2020-10-13 10:21:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:36,866 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-13 10:21:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:36,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-13 10:21:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:36,867 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:21:36,868 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 10:21:36,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:36,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 10:21:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-13 10:21:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 10:21:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-13 10:21:36,874 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 38 [2020-10-13 10:21:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:36,874 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-13 10:21:36,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-13 10:21:36,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:36,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:36,875 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] [2020-10-13 10:21:36,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:21:36,875 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:36,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:36,876 INFO L82 PathProgramCache]: Analyzing trace with hash 439169867, now seen corresponding path program 4 times [2020-10-13 10:21:36,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:36,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118220451] [2020-10-13 10:21:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:37,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:37,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-13 10:21:37,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:21:37,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:37,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:37,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:37,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:37,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:37,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:37,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118220451] [2020-10-13 10:21:37,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:37,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:37,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542972744] [2020-10-13 10:21:37,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:37,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:37,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:37,629 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 11 states. [2020-10-13 10:21:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:38,123 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-10-13 10:21:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:38,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 10:21:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:38,124 INFO L225 Difference]: With dead ends: 74 [2020-10-13 10:21:38,125 INFO L226 Difference]: Without dead ends: 49 [2020-10-13 10:21:38,125 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 [2020-10-13 10:21:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-13 10:21:38,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-13 10:21:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 10:21:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-10-13 10:21:38,131 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 40 [2020-10-13 10:21:38,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:38,131 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-10-13 10:21:38,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:38,131 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-10-13 10:21:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:38,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:38,132 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] [2020-10-13 10:21:38,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:21:38,132 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:38,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1838649268, now seen corresponding path program 5 times [2020-10-13 10:21:38,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:38,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629993795] [2020-10-13 10:21:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:38,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:38,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-13 10:21:38,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:38,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:21:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:38,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:38,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:38,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:38,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:38,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629993795] [2020-10-13 10:21:38,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:38,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:38,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291435] [2020-10-13 10:21:38,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:38,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:38,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:38,976 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 11 states. [2020-10-13 10:21:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:39,608 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-13 10:21:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:39,608 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 10:21:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:39,609 INFO L225 Difference]: With dead ends: 63 [2020-10-13 10:21:39,609 INFO L226 Difference]: Without dead ends: 61 [2020-10-13 10:21:39,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:21:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-13 10:21:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-13 10:21:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 10:21:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-13 10:21:39,620 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 40 [2020-10-13 10:21:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:39,620 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-13 10:21:39,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-13 10:21:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:21:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:39,621 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] [2020-10-13 10:21:39,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:21:39,622 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1655804172, now seen corresponding path program 5 times [2020-10-13 10:21:39,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:39,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983516640] [2020-10-13 10:21:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:41,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:21:41,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:41,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1871 [2020-10-13 10:21:41,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:41,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:41,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:21:41,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:41,869 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-13 10:21:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:42,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:42,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:42,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:42,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:42,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:42,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983516640] [2020-10-13 10:21:42,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:42,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:42,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199327414] [2020-10-13 10:21:42,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:42,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:42,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:42,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:42,047 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 11 states. [2020-10-13 10:21:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:42,647 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2020-10-13 10:21:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:42,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-13 10:21:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:42,648 INFO L225 Difference]: With dead ends: 88 [2020-10-13 10:21:42,648 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 10:21:42,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:21:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 10:21:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-13 10:21:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 10:21:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-10-13 10:21:42,662 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 44 [2020-10-13 10:21:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:42,662 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-10-13 10:21:42,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-10-13 10:21:42,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:21:42,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:42,664 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] [2020-10-13 10:21:42,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:21:42,664 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:42,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:42,665 INFO L82 PathProgramCache]: Analyzing trace with hash 210546851, now seen corresponding path program 6 times [2020-10-13 10:21:42,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:42,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707839230] [2020-10-13 10:21:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:43,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:21:43,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-13 10:21:43,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:43,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:21:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:43,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:43,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:43,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:43,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707839230] [2020-10-13 10:21:43,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:43,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:43,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680646372] [2020-10-13 10:21:43,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:43,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:43,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:43,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:43,832 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 12 states. [2020-10-13 10:21:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:44,386 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2020-10-13 10:21:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:21:44,394 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-13 10:21:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:44,395 INFO L225 Difference]: With dead ends: 102 [2020-10-13 10:21:44,395 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 10:21:44,397 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 [2020-10-13 10:21:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 10:21:44,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2020-10-13 10:21:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:21:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-10-13 10:21:44,405 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 46 [2020-10-13 10:21:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:44,406 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-10-13 10:21:44,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-10-13 10:21:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:21:44,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:44,407 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] [2020-10-13 10:21:44,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:21:44,407 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:44,407 INFO L82 PathProgramCache]: Analyzing trace with hash -257446371, now seen corresponding path program 6 times [2020-10-13 10:21:44,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:44,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645337418] [2020-10-13 10:21:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:21:47,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:47,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3073 [2020-10-13 10:21:47,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:47,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:21:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:21:48,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:48,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:48,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:48,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:48,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:48,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:48,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645337418] [2020-10-13 10:21:48,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:48,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:48,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682378288] [2020-10-13 10:21:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:48,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:48,115 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 12 states. [2020-10-13 10:21:48,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:48,837 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-10-13 10:21:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:48,838 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-13 10:21:48,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:48,839 INFO L225 Difference]: With dead ends: 92 [2020-10-13 10:21:48,839 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 10:21:48,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 10:21:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-13 10:21:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:21:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-13 10:21:48,849 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 48 [2020-10-13 10:21:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:48,849 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-13 10:21:48,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-13 10:21:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:21:48,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:48,850 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] [2020-10-13 10:21:48,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:21:48,851 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:48,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:48,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1982103453, now seen corresponding path program 7 times [2020-10-13 10:21:48,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:48,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331829127] [2020-10-13 10:21:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:21:49,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-13 10:21:49,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:21:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:49,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:49,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:49,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331829127] [2020-10-13 10:21:49,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:49,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:49,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912602690] [2020-10-13 10:21:49,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:49,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:49,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:49,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:49,931 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 13 states. [2020-10-13 10:21:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:50,577 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2020-10-13 10:21:50,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:50,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-13 10:21:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:50,580 INFO L225 Difference]: With dead ends: 90 [2020-10-13 10:21:50,580 INFO L226 Difference]: Without dead ends: 59 [2020-10-13 10:21:50,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:21:50,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-13 10:21:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-13 10:21:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 10:21:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-13 10:21:50,586 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 50 [2020-10-13 10:21:50,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:50,586 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-13 10:21:50,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:50,587 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-13 10:21:50,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:21:50,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:50,587 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] [2020-10-13 10:21:50,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:21:50,588 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash -292370036, now seen corresponding path program 7 times [2020-10-13 10:21:50,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:50,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483938923] [2020-10-13 10:21:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:21:51,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-13 10:21:51,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:21:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:51,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483938923] [2020-10-13 10:21:51,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:51,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:51,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030511541] [2020-10-13 10:21:51,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:51,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:51,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:51,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:51,843 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 13 states. [2020-10-13 10:21:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:52,636 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2020-10-13 10:21:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:52,637 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-13 10:21:52,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:52,638 INFO L225 Difference]: With dead ends: 96 [2020-10-13 10:21:52,638 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 10:21:52,638 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 [2020-10-13 10:21:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 10:21:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2020-10-13 10:21:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:21:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-10-13 10:21:52,645 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 50 [2020-10-13 10:21:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:52,646 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-10-13 10:21:52,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-10-13 10:21:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:21:52,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:52,647 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] [2020-10-13 10:21:52,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:21:52,647 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:52,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:52,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1474886860, now seen corresponding path program 8 times [2020-10-13 10:21:52,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:52,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180074511] [2020-10-13 10:21:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:54,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:21:54,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:54,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:54,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:54,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:54,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180074511] [2020-10-13 10:21:54,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:54,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:54,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151953910] [2020-10-13 10:21:54,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:54,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:54,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:54,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:54,931 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 13 states. [2020-10-13 10:21:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:55,757 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2020-10-13 10:21:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:55,758 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-13 10:21:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:55,759 INFO L225 Difference]: With dead ends: 98 [2020-10-13 10:21:55,759 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 10:21:55,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:21:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 10:21:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-10-13 10:21:55,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:21:55,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-13 10:21:55,774 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 54 [2020-10-13 10:21:55,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:55,774 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-13 10:21:55,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-13 10:21:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:21:55,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:55,775 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:55,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:21:55,775 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:55,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1130347019, now seen corresponding path program 8 times [2020-10-13 10:21:55,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:55,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498416805] [2020-10-13 10:21:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:21:56,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-13 10:21:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:21:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:21:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:57,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:57,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498416805] [2020-10-13 10:21:57,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:57,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:21:57,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129526715] [2020-10-13 10:21:57,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:21:57,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:21:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:57,372 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 14 states. [2020-10-13 10:21:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:58,275 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2020-10-13 10:21:58,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:58,276 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-13 10:21:58,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:58,277 INFO L225 Difference]: With dead ends: 102 [2020-10-13 10:21:58,277 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:21:58,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:21:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:21:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-10-13 10:21:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 10:21:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-10-13 10:21:58,286 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-10-13 10:21:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:58,287 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-10-13 10:21:58,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:21:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-10-13 10:21:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:21:58,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:58,288 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] [2020-10-13 10:21:58,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:21:58,288 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:58,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:58,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1967445893, now seen corresponding path program 9 times [2020-10-13 10:21:58,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:58,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482118196] [2020-10-13 10:21:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:21:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:59,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:59,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:59,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:59,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482118196] [2020-10-13 10:21:59,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:59,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:21:59,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585403340] [2020-10-13 10:21:59,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:21:59,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:59,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:21:59,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:59,923 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 14 states. [2020-10-13 10:22:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:01,241 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2020-10-13 10:22:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:01,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-13 10:22:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:01,243 INFO L225 Difference]: With dead ends: 118 [2020-10-13 10:22:01,243 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 10:22:01,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:01,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 10:22:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2020-10-13 10:22:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 10:22:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-10-13 10:22:01,251 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 56 [2020-10-13 10:22:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:01,252 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-10-13 10:22:01,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-10-13 10:22:01,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:22:01,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:01,253 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] [2020-10-13 10:22:01,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:22:01,253 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:01,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:01,256 INFO L82 PathProgramCache]: Analyzing trace with hash 815799477, now seen corresponding path program 9 times [2020-10-13 10:22:01,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:01,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431327936] [2020-10-13 10:22:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:03,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:22:03,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2466 [2020-10-13 10:22:03,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:22:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:04,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:04,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:04,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:04,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:04,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431327936] [2020-10-13 10:22:04,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:04,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:04,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101420196] [2020-10-13 10:22:04,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:04,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:04,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:04,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:04,358 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 14 states. [2020-10-13 10:22:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:05,366 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2020-10-13 10:22:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:05,366 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-13 10:22:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:05,367 INFO L225 Difference]: With dead ends: 108 [2020-10-13 10:22:05,367 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:22:05,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:22:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-13 10:22:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 10:22:05,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-13 10:22:05,376 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 58 [2020-10-13 10:22:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:05,377 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-13 10:22:05,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-13 10:22:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:05,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:05,378 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] [2020-10-13 10:22:05,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:22:05,378 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash -640005061, now seen corresponding path program 10 times [2020-10-13 10:22:05,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:05,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568519670] [2020-10-13 10:22:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:06,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:06,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-10-13 10:22:06,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:06,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:22:06,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:07,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:07,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:07,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:07,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:07,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:07,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568519670] [2020-10-13 10:22:07,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:07,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:07,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366772212] [2020-10-13 10:22:07,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:07,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:07,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:07,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:07,116 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 15 states. [2020-10-13 10:22:07,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:07,926 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2020-10-13 10:22:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:07,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-13 10:22:07,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:07,927 INFO L225 Difference]: With dead ends: 106 [2020-10-13 10:22:07,927 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 10:22:07,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 10:22:07,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-13 10:22:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 10:22:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-13 10:22:07,935 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 60 [2020-10-13 10:22:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:07,935 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-13 10:22:07,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-13 10:22:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:07,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:07,936 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] [2020-10-13 10:22:07,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:07,937 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:07,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:07,937 INFO L82 PathProgramCache]: Analyzing trace with hash 304738852, now seen corresponding path program 10 times [2020-10-13 10:22:07,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:07,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693447836] [2020-10-13 10:22:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:08,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1084 [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:22:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:09,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:09,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:09,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693447836] [2020-10-13 10:22:09,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:09,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:09,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550498856] [2020-10-13 10:22:09,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:09,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:09,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:09,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:09,659 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 15 states. [2020-10-13 10:22:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:10,925 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-10-13 10:22:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:10,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-13 10:22:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:10,926 INFO L225 Difference]: With dead ends: 83 [2020-10-13 10:22:10,926 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 10:22:10,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 10:22:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-10-13 10:22:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:22:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-13 10:22:10,934 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 60 [2020-10-13 10:22:10,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:10,934 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-13 10:22:10,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-13 10:22:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:22:10,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:10,935 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] [2020-10-13 10:22:10,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:10,935 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:10,936 INFO L82 PathProgramCache]: Analyzing trace with hash 336206180, now seen corresponding path program 11 times [2020-10-13 10:22:10,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:10,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44124289] [2020-10-13 10:22:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 10:22:13,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2923 [2020-10-13 10:22:13,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 10:22:13,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:14,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:14,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:14,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:14,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44124289] [2020-10-13 10:22:14,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:14,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:14,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102655262] [2020-10-13 10:22:14,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:14,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:14,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:14,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:14,485 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 15 states. [2020-10-13 10:22:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:15,694 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2020-10-13 10:22:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:15,695 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-13 10:22:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:15,696 INFO L225 Difference]: With dead ends: 85 [2020-10-13 10:22:15,696 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 10:22:15,697 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 [2020-10-13 10:22:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 10:22:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2020-10-13 10:22:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:22:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-10-13 10:22:15,704 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 64 [2020-10-13 10:22:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:15,705 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-10-13 10:22:15,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-10-13 10:22:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 10:22:15,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:15,706 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] [2020-10-13 10:22:15,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:15,706 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:15,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1022918893, now seen corresponding path program 11 times [2020-10-13 10:22:15,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:15,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030279284] [2020-10-13 10:22:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:17,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:22:17,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:17,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-13 10:22:17,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:17,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 10:22:17,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:17,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030279284] [2020-10-13 10:22:17,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:17,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:17,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715921834] [2020-10-13 10:22:17,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:17,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:17,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:17,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:17,669 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 16 states. [2020-10-13 10:22:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:18,628 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2020-10-13 10:22:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:18,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-13 10:22:18,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:18,633 INFO L225 Difference]: With dead ends: 134 [2020-10-13 10:22:18,633 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:22:18,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:18,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:22:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2020-10-13 10:22:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-13 10:22:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-10-13 10:22:18,642 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 66 [2020-10-13 10:22:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:18,642 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-10-13 10:22:18,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:22:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-10-13 10:22:18,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 10:22:18,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:18,643 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] [2020-10-13 10:22:18,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:18,643 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash -798386477, now seen corresponding path program 12 times [2020-10-13 10:22:18,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:18,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399429307] [2020-10-13 10:22:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 10:22:20,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-10-13 10:22:20,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 10:22:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:21,240 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-13 10:22:21,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:21,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:21,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:21,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:21,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399429307] [2020-10-13 10:22:21,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:21,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:22:21,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924762917] [2020-10-13 10:22:21,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:22:21,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:21,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:22:21,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:21,606 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 17 states. [2020-10-13 10:22:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:22,696 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2020-10-13 10:22:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:22,697 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-13 10:22:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:22,698 INFO L225 Difference]: With dead ends: 122 [2020-10-13 10:22:22,698 INFO L226 Difference]: Without dead ends: 79 [2020-10-13 10:22:22,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-13 10:22:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-13 10:22:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 10:22:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-13 10:22:22,707 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 70 [2020-10-13 10:22:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:22,707 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-13 10:22:22,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:22:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-13 10:22:22,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 10:22:22,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:22,708 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] [2020-10-13 10:22:22,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:22,709 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:22,709 INFO L82 PathProgramCache]: Analyzing trace with hash 877201788, now seen corresponding path program 12 times [2020-10-13 10:22:22,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:22,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737060586] [2020-10-13 10:22:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2733 [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 10:22:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,933 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-13 10:22:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:26,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:26,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:26,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:26,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:26,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:26,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:26,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737060586] [2020-10-13 10:22:26,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:26,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:22:26,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790113348] [2020-10-13 10:22:26,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:22:26,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:26,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:22:26,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:26,301 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 17 states. [2020-10-13 10:22:27,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:27,889 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-10-13 10:22:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:27,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-13 10:22:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:27,891 INFO L225 Difference]: With dead ends: 93 [2020-10-13 10:22:27,891 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 10:22:27,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 10:22:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-10-13 10:22:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 10:22:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-13 10:22:27,901 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 70 [2020-10-13 10:22:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:27,901 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-13 10:22:27,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:22:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-13 10:22:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 10:22:27,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:27,902 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] [2020-10-13 10:22:27,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:27,903 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:27,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:27,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1469957308, now seen corresponding path program 13 times [2020-10-13 10:22:27,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:27,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355024021] [2020-10-13 10:22:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:32,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:32,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 10:22:32,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4434 [2020-10-13 10:22:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:32,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 10:22:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:32,813 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-13 10:22:33,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:33,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:33,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:33,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:33,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:33,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:33,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355024021] [2020-10-13 10:22:33,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:33,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:22:33,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327076820] [2020-10-13 10:22:33,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:22:33,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:33,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:22:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:33,284 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 17 states. [2020-10-13 10:22:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:34,831 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-10-13 10:22:34,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:34,831 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2020-10-13 10:22:34,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:34,833 INFO L225 Difference]: With dead ends: 136 [2020-10-13 10:22:34,833 INFO L226 Difference]: Without dead ends: 128 [2020-10-13 10:22:34,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-13 10:22:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2020-10-13 10:22:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-13 10:22:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-10-13 10:22:34,844 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 74 [2020-10-13 10:22:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:34,844 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-10-13 10:22:34,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:22:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-10-13 10:22:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:22:34,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:34,845 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] [2020-10-13 10:22:34,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:34,846 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1885189227, now seen corresponding path program 13 times [2020-10-13 10:22:34,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:34,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074766548] [2020-10-13 10:22:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:34,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:36,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:36,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:22:36,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:36,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1909 [2020-10-13 10:22:36,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:36,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:22:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:36,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 10:22:36,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:37,287 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-13 10:22:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:37,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:37,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:37,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:37,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:37,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074766548] [2020-10-13 10:22:37,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:37,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:22:37,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712409144] [2020-10-13 10:22:37,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:22:37,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:37,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:22:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:37,585 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 18 states. [2020-10-13 10:22:39,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:39,005 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2020-10-13 10:22:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:39,005 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-13 10:22:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:39,007 INFO L225 Difference]: With dead ends: 150 [2020-10-13 10:22:39,007 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 10:22:39,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:39,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 10:22:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-10-13 10:22:39,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:22:39,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2020-10-13 10:22:39,016 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 76 [2020-10-13 10:22:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:39,016 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2020-10-13 10:22:39,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:22:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2020-10-13 10:22:39,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 10:22:39,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:39,017 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] [2020-10-13 10:22:39,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:22:39,018 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1413032411, now seen corresponding path program 14 times [2020-10-13 10:22:39,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:39,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248889205] [2020-10-13 10:22:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:42,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:42,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:22:42,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:42,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3705 [2020-10-13 10:22:42,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:22:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:42,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 10:22:42,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:43,361 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-13 10:22:43,497 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-13 10:22:43,627 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-13 10:22:43,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:43,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:43,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248889205] [2020-10-13 10:22:43,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:43,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:22:43,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098737750] [2020-10-13 10:22:43,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:22:43,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:43,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:22:43,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:43,962 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand 18 states. [2020-10-13 10:22:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:45,713 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2020-10-13 10:22:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:45,714 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-13 10:22:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:45,715 INFO L225 Difference]: With dead ends: 140 [2020-10-13 10:22:45,715 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 10:22:45,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 10:22:45,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-13 10:22:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:22:45,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-13 10:22:45,726 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 78 [2020-10-13 10:22:45,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:45,726 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-13 10:22:45,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:22:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-13 10:22:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:22:45,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:45,728 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] [2020-10-13 10:22:45,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:22:45,728 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:45,728 INFO L82 PathProgramCache]: Analyzing trace with hash -764059605, now seen corresponding path program 15 times [2020-10-13 10:22:45,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:45,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583282604] [2020-10-13 10:22:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2494 [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 10:22:48,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:49,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:49,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:49,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:49,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:49,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:49,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:49,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:49,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:49,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:49,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:49,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583282604] [2020-10-13 10:22:49,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:49,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:22:49,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655355260] [2020-10-13 10:22:49,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:22:49,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:49,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:22:49,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:49,216 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 19 states. [2020-10-13 10:22:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:50,734 INFO L93 Difference]: Finished difference Result 138 states and 139 transitions. [2020-10-13 10:22:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:50,735 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-13 10:22:50,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:50,736 INFO L225 Difference]: With dead ends: 138 [2020-10-13 10:22:50,736 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 10:22:50,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:50,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 10:22:50,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-13 10:22:50,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:22:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-10-13 10:22:50,743 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 80 [2020-10-13 10:22:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:50,743 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-10-13 10:22:50,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:22:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-10-13 10:22:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 10:22:50,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:50,744 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] [2020-10-13 10:22:50,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:22:50,744 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1585975188, now seen corresponding path program 14 times [2020-10-13 10:22:50,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:50,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260297526] [2020-10-13 10:22:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:50,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:53,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2516 [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:53,850 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-13 10:22:54,020 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-13 10:22:54,178 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-13 10:22:54,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:54,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:54,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:54,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:54,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:54,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:54,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:54,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260297526] [2020-10-13 10:22:54,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:54,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:22:54,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499230129] [2020-10-13 10:22:54,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:22:54,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:54,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:22:54,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:54,573 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 19 states. [2020-10-13 10:22:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:56,670 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2020-10-13 10:22:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:56,670 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-13 10:22:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:56,672 INFO L225 Difference]: With dead ends: 103 [2020-10-13 10:22:56,672 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 10:22:56,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:22:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 10:22:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2020-10-13 10:22:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 10:22:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-13 10:22:56,680 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 80 [2020-10-13 10:22:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:56,681 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-13 10:22:56,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:22:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-13 10:22:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 10:22:56,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:56,682 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] [2020-10-13 10:22:56,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:22:56,682 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1606680876, now seen corresponding path program 16 times [2020-10-13 10:22:56,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:56,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158513598] [2020-10-13 10:22:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:01,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 10:23:01,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 10:23:01,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:01,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-13 10:23:01,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:02,329 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-13 10:23:02,478 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 10:23:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:02,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:02,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:02,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:02,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158513598] [2020-10-13 10:23:02,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:02,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:23:02,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264686046] [2020-10-13 10:23:02,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:23:02,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:02,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:23:02,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:02,879 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 19 states. [2020-10-13 10:23:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:04,971 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-10-13 10:23:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:23:04,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2020-10-13 10:23:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:04,973 INFO L225 Difference]: With dead ends: 105 [2020-10-13 10:23:04,974 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 10:23:04,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:23:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 10:23:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-10-13 10:23:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 10:23:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-10-13 10:23:04,981 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 84 [2020-10-13 10:23:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:04,981 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-10-13 10:23:04,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:23:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-10-13 10:23:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 10:23:04,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:04,982 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] [2020-10-13 10:23:04,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:23:04,982 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:04,983 INFO L82 PathProgramCache]: Analyzing trace with hash 173394051, now seen corresponding path program 15 times [2020-10-13 10:23:04,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:04,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116038611] [2020-10-13 10:23:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:05,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:07,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 10:23:07,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2818 [2020-10-13 10:23:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:23:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 10:23:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,517 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-13 10:23:08,697 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-13 10:23:08,924 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-13 10:23:09,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:09,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:09,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:09,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116038611] [2020-10-13 10:23:09,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:09,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:23:09,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157353189] [2020-10-13 10:23:09,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:23:09,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:09,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:23:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:23:09,327 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 20 states. [2020-10-13 10:23:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:11,129 INFO L93 Difference]: Finished difference Result 166 states and 169 transitions. [2020-10-13 10:23:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:23:11,130 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2020-10-13 10:23:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:11,131 INFO L225 Difference]: With dead ends: 166 [2020-10-13 10:23:11,131 INFO L226 Difference]: Without dead ends: 150 [2020-10-13 10:23:11,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:11,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-13 10:23:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-10-13 10:23:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-13 10:23:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2020-10-13 10:23:11,143 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 86 [2020-10-13 10:23:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:11,144 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2020-10-13 10:23:11,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:23:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2020-10-13 10:23:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 10:23:11,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:11,145 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] [2020-10-13 10:23:11,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:23:11,145 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:11,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:11,146 INFO L82 PathProgramCache]: Analyzing trace with hash -879384509, now seen corresponding path program 17 times [2020-10-13 10:23:11,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:11,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531457444] [2020-10-13 10:23:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3395 [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 10:23:14,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:15,177 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-13 10:23:15,343 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-13 10:23:15,502 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-13 10:23:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:15,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:15,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:15,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:15,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:16,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531457444] [2020-10-13 10:23:16,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:16,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:23:16,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902823210] [2020-10-13 10:23:16,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:23:16,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:16,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:23:16,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:16,032 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 21 states. [2020-10-13 10:23:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:18,117 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2020-10-13 10:23:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:18,117 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-13 10:23:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:18,119 INFO L225 Difference]: With dead ends: 154 [2020-10-13 10:23:18,119 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:23:18,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:23:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:23:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-13 10:23:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 10:23:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-10-13 10:23:18,128 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 90 [2020-10-13 10:23:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:18,128 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-10-13 10:23:18,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:23:18,128 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-10-13 10:23:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 10:23:18,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:18,130 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] [2020-10-13 10:23:18,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:23:18,130 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:18,130 INFO L82 PathProgramCache]: Analyzing trace with hash -265616276, now seen corresponding path program 16 times [2020-10-13 10:23:18,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:18,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464451408] [2020-10-13 10:23:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:18,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 10:23:22,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:22,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4230 [2020-10-13 10:23:22,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:23:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:22,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-13 10:23:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:23,491 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-13 10:23:23,786 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2020-10-13 10:23:23,980 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-13 10:23:24,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:24,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464451408] [2020-10-13 10:23:24,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:24,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:23:24,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689785142] [2020-10-13 10:23:24,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:23:24,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:24,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:23:24,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:24,439 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 21 states. [2020-10-13 10:23:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:27,240 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2020-10-13 10:23:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:27,246 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-13 10:23:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:27,247 INFO L225 Difference]: With dead ends: 113 [2020-10-13 10:23:27,247 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 10:23:27,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:27,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 10:23:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2020-10-13 10:23:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 10:23:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-13 10:23:27,256 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 90 [2020-10-13 10:23:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:27,257 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-13 10:23:27,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:23:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-13 10:23:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 10:23:27,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:27,258 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] [2020-10-13 10:23:27,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:23:27,258 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash 187221932, now seen corresponding path program 18 times [2020-10-13 10:23:27,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:27,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826987700] [2020-10-13 10:23:27,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:32,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:32,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 10:23:32,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:32,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 10:23:32,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:23:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:32,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 10:23:32,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:33,354 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-10-13 10:23:33,538 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-13 10:23:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:34,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:34,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:34,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:34,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:34,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:34,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:34,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:34,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826987700] [2020-10-13 10:23:34,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:34,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:23:34,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430413194] [2020-10-13 10:23:34,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:23:34,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:34,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:23:34,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:34,115 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 21 states. [2020-10-13 10:23:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:36,856 INFO L93 Difference]: Finished difference Result 168 states and 171 transitions. [2020-10-13 10:23:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:36,857 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2020-10-13 10:23:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:36,859 INFO L225 Difference]: With dead ends: 168 [2020-10-13 10:23:36,859 INFO L226 Difference]: Without dead ends: 160 [2020-10-13 10:23:36,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-13 10:23:36,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2020-10-13 10:23:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 10:23:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2020-10-13 10:23:36,873 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 94 [2020-10-13 10:23:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:36,873 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2020-10-13 10:23:36,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:23:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2020-10-13 10:23:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:23:36,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:36,875 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] [2020-10-13 10:23:36,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:23:36,875 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:36,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:36,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1832106843, now seen corresponding path program 17 times [2020-10-13 10:23:36,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:36,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495396358] [2020-10-13 10:23:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:42,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:42,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 10:23:42,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:42,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4885 [2020-10-13 10:23:42,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:42,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:23:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 10:23:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:42,709 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-13 10:23:42,877 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-13 10:23:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:43,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:43,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:43,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:43,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:43,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:43,556 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 16 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:43,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495396358] [2020-10-13 10:23:43,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:43,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:23:43,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705385663] [2020-10-13 10:23:43,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:23:43,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:43,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:23:43,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:43,557 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand 22 states. [2020-10-13 10:23:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:46,064 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2020-10-13 10:23:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:23:46,065 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2020-10-13 10:23:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:46,067 INFO L225 Difference]: With dead ends: 182 [2020-10-13 10:23:46,067 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 10:23:46,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:23:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 10:23:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-13 10:23:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-13 10:23:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 165 transitions. [2020-10-13 10:23:46,080 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 165 transitions. Word has length 96 [2020-10-13 10:23:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:46,080 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 165 transitions. [2020-10-13 10:23:46,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:23:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 165 transitions. [2020-10-13 10:23:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 10:23:46,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:46,081 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] [2020-10-13 10:23:46,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:23:46,081 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:46,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:46,082 INFO L82 PathProgramCache]: Analyzing trace with hash 64752277, now seen corresponding path program 19 times [2020-10-13 10:23:46,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:46,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957646383] [2020-10-13 10:23:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:52,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:52,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 10:23:52,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5779 [2020-10-13 10:23:52,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:23:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 10:23:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:53,885 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 268 DAG size of output: 47 [2020-10-13 10:23:54,025 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-13 10:23:54,274 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-13 10:23:54,587 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-13 10:23:54,802 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2020-10-13 10:23:55,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:55,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:55,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:55,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:55,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:55,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957646383] [2020-10-13 10:23:55,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:55,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:23:55,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297718246] [2020-10-13 10:23:55,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:23:55,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:55,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:23:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:55,349 INFO L87 Difference]: Start difference. First operand 162 states and 165 transitions. Second operand 22 states. [2020-10-13 10:23:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:58,064 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-10-13 10:23:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:58,065 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-10-13 10:23:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:58,066 INFO L225 Difference]: With dead ends: 172 [2020-10-13 10:23:58,067 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 10:23:58,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:23:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 10:23:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2020-10-13 10:23:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-13 10:23:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2020-10-13 10:23:58,080 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 98 [2020-10-13 10:23:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:58,080 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2020-10-13 10:23:58,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:23:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2020-10-13 10:23:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 10:23:58,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:58,081 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] [2020-10-13 10:23:58,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:23:58,082 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:58,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:58,082 INFO L82 PathProgramCache]: Analyzing trace with hash -703697125, now seen corresponding path program 20 times [2020-10-13 10:23:58,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:58,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942663464] [2020-10-13 10:23:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:03,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:03,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:24:03,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 10:24:03,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:24:03,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:03,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 10:24:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:04,058 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 10:24:04,380 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-13 10:24:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:04,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:04,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:04,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:04,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:04,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:05,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942663464] [2020-10-13 10:24:05,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:05,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:24:05,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023289981] [2020-10-13 10:24:05,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:24:05,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:05,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:24:05,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:05,019 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 23 states. [2020-10-13 10:24:07,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:07,647 INFO L93 Difference]: Finished difference Result 170 states and 171 transitions. [2020-10-13 10:24:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:07,648 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-13 10:24:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:07,650 INFO L225 Difference]: With dead ends: 170 [2020-10-13 10:24:07,650 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 10:24:07,651 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 [2020-10-13 10:24:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 10:24:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-13 10:24:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 10:24:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2020-10-13 10:24:07,670 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 100 [2020-10-13 10:24:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:07,670 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2020-10-13 10:24:07,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:24:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2020-10-13 10:24:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 10:24:07,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:07,672 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] [2020-10-13 10:24:07,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:24:07,672 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash 102885380, now seen corresponding path program 18 times [2020-10-13 10:24:07,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:07,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073456926] [2020-10-13 10:24:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:13,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:24:13,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:13,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-13 10:24:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:24:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:13,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-13 10:24:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:13,814 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-13 10:24:14,060 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-13 10:24:14,281 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-13 10:24:14,597 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-13 10:24:15,040 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2020-10-13 10:24:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:15,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:15,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:15,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:15,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:15,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:15,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073456926] [2020-10-13 10:24:15,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:15,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:24:15,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847348311] [2020-10-13 10:24:15,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:24:15,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:15,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:24:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:15,648 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 23 states. [2020-10-13 10:24:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:19,317 INFO L93 Difference]: Finished difference Result 176 states and 179 transitions. [2020-10-13 10:24:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:19,318 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-13 10:24:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:19,319 INFO L225 Difference]: With dead ends: 176 [2020-10-13 10:24:19,319 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 10:24:19,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 10:24:19,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2020-10-13 10:24:19,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-13 10:24:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 169 transitions. [2020-10-13 10:24:19,334 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 169 transitions. Word has length 100 [2020-10-13 10:24:19,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:19,334 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 169 transitions. [2020-10-13 10:24:19,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:24:19,334 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 169 transitions. [2020-10-13 10:24:19,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:24:19,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:19,335 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] [2020-10-13 10:24:19,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:24:19,336 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:19,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:19,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1118560444, now seen corresponding path program 21 times [2020-10-13 10:24:19,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:19,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315252603] [2020-10-13 10:24:19,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:24,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:26,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 10:24:26,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:26,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6663 [2020-10-13 10:24:26,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:24:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:26,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 10:24:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:27,220 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-13 10:24:27,638 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-13 10:24:27,964 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2020-10-13 10:24:28,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:28,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:28,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:28,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315252603] [2020-10-13 10:24:28,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:28,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:24:28,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273562080] [2020-10-13 10:24:28,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:24:28,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:24:28,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:24:28,665 INFO L87 Difference]: Start difference. First operand 166 states and 169 transitions. Second operand 23 states. [2020-10-13 10:24:30,579 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-13 10:24:31,427 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-13 10:24:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:32,918 INFO L93 Difference]: Finished difference Result 178 states and 180 transitions. [2020-10-13 10:24:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:32,918 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 104 [2020-10-13 10:24:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:32,920 INFO L225 Difference]: With dead ends: 178 [2020-10-13 10:24:32,920 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 10:24:32,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 10:24:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 122. [2020-10-13 10:24:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-13 10:24:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-10-13 10:24:32,931 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 104 [2020-10-13 10:24:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:32,931 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-10-13 10:24:32,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:24:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-10-13 10:24:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 10:24:32,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:32,932 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:32,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:24:32,932 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:32,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:32,932 INFO L82 PathProgramCache]: Analyzing trace with hash -311977939, now seen corresponding path program 19 times [2020-10-13 10:24:32,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:32,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139324066] [2020-10-13 10:24:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:33,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:38,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:38,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 10:24:38,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 10:24:38,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:24:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:24:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:38,921 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-13 10:24:39,118 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-13 10:24:39,379 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-13 10:24:39,658 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-10-13 10:24:39,984 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-13 10:24:40,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:40,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:40,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139324066] [2020-10-13 10:24:40,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:40,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 10:24:40,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126742] [2020-10-13 10:24:40,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 10:24:40,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:40,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 10:24:40,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:24:40,703 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 24 states. [2020-10-13 10:24:43,132 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-13 10:24:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:44,591 INFO L93 Difference]: Finished difference Result 182 states and 185 transitions. [2020-10-13 10:24:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:44,592 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 104 [2020-10-13 10:24:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:44,594 INFO L225 Difference]: With dead ends: 182 [2020-10-13 10:24:44,594 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 10:24:44,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 10:24:44,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2020-10-13 10:24:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-13 10:24:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2020-10-13 10:24:44,611 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 104 [2020-10-13 10:24:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:44,611 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2020-10-13 10:24:44,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 10:24:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2020-10-13 10:24:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 10:24:44,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:44,612 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] [2020-10-13 10:24:44,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:24:44,613 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1105693939, now seen corresponding path program 20 times [2020-10-13 10:24:44,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:44,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006117911] [2020-10-13 10:24:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:49,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:49,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 10:24:49,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:49,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-13 10:24:49,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:49,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:24:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:49,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 10:24:49,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:50,457 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-13 10:24:50,632 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-13 10:24:50,896 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-13 10:24:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:51,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:51,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:51,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 18 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:51,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006117911] [2020-10-13 10:24:51,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:51,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 10:24:51,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710912451] [2020-10-13 10:24:51,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 10:24:51,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:51,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 10:24:51,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:24:51,753 INFO L87 Difference]: Start difference. First operand 172 states and 175 transitions. Second operand 24 states. [2020-10-13 10:24:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:55,046 INFO L93 Difference]: Finished difference Result 198 states and 202 transitions. [2020-10-13 10:24:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:24:55,047 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 106 [2020-10-13 10:24:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:55,049 INFO L225 Difference]: With dead ends: 198 [2020-10-13 10:24:55,049 INFO L226 Difference]: Without dead ends: 182 [2020-10-13 10:24:55,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:24:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-13 10:24:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2020-10-13 10:24:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 10:24:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 181 transitions. [2020-10-13 10:24:55,065 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 181 transitions. Word has length 106 [2020-10-13 10:24:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:55,065 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 181 transitions. [2020-10-13 10:24:55,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 10:24:55,066 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 181 transitions. [2020-10-13 10:24:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 10:24:55,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:55,067 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:55,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:24:55,067 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:55,068 INFO L82 PathProgramCache]: Analyzing trace with hash 746820333, now seen corresponding path program 22 times [2020-10-13 10:24:55,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:55,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162263120] [2020-10-13 10:24:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:00,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:00,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:25:00,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:00,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5227 [2020-10-13 10:25:00,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:25:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 10:25:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:01,490 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-13 10:25:01,655 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-13 10:25:02,046 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 98 [2020-10-13 10:25:02,264 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2020-10-13 10:25:02,512 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-13 10:25:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:03,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:03,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:03,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:03,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:03,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162263120] [2020-10-13 10:25:03,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:03,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 10:25:03,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011110768] [2020-10-13 10:25:03,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 10:25:03,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:03,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 10:25:03,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:25:03,374 INFO L87 Difference]: Start difference. First operand 178 states and 181 transitions. Second operand 24 states. [2020-10-13 10:25:05,814 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-13 10:25:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:07,555 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions. [2020-10-13 10:25:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:25:07,556 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 108 [2020-10-13 10:25:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:07,558 INFO L225 Difference]: With dead ends: 188 [2020-10-13 10:25:07,558 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 10:25:07,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=87, Invalid=1035, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:25:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 10:25:07,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2020-10-13 10:25:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-13 10:25:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2020-10-13 10:25:07,575 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 108 [2020-10-13 10:25:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:07,575 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2020-10-13 10:25:07,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 10:25:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2020-10-13 10:25:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 10:25:07,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:07,577 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:07,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:25:07,577 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:07,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1563446093, now seen corresponding path program 23 times [2020-10-13 10:25:07,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:07,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588531816] [2020-10-13 10:25:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking...