/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/sll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:22:08,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:22:08,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:22:08,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:22:08,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:22:08,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:22:08,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:22:08,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:22:08,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:22:08,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:22:08,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:22:08,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:22:08,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:22:08,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:22:08,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:22:08,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:22:08,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:22:08,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:22:08,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:22:08,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:22:08,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:22:08,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:22:08,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:22:08,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:22:08,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:22:08,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:22:08,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:22:08,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:22:08,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:22:08,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:22:08,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:22:08,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:22:08,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:22:08,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:22:08,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:22:08,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:22:08,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:22:08,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:22:08,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:22:08,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:22:08,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:22:08,814 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 10:22:08,838 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:22:08,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:22:08,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:22:08,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:22:08,840 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:22:08,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:22:08,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:22:08,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:22:08,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:22:08,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:22:08,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:22:08,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:22:08,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:22:08,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:22:08,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:22:08,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:22:08,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:22:08,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:22:08,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:22:08,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:22:08,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:22:08,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:22:08,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:22:08,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:22:08,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:22:08,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:22:08,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:22:08,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:22:08,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:22:08,845 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 10:22:09,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:22:09,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:22:09,189 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:22:09,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:22:09,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:22:09,194 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2020-10-13 10:22:09,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08b99e7c/4070851962964c1f9edc7f7b8eacbc98/FLAG2d6e97c04 [2020-10-13 10:22:09,804 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:22:09,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-1.i [2020-10-13 10:22:09,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08b99e7c/4070851962964c1f9edc7f7b8eacbc98/FLAG2d6e97c04 [2020-10-13 10:22:10,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08b99e7c/4070851962964c1f9edc7f7b8eacbc98 [2020-10-13 10:22:10,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:22:10,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:22:10,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:22:10,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:22:10,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:22:10,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d733b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10, skipping insertion in model container [2020-10-13 10:22:10,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:22:10,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:22:10,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:22:10,664 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:22:10,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:22:10,765 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:22:10,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10 WrapperNode [2020-10-13 10:22:10,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:22:10,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:22:10,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:22:10,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:22:10,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (1/1) ... [2020-10-13 10:22:10,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:22:10,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:22:10,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:22:10,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:22:10,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (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 10:22:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:22:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:22:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:22:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:22:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:22:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:22:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:22:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:22:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:22:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:22:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:22:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:22:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:22:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:22:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:22:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:22:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:22:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:22:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:22:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:22:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:22:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:22:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:22:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:22:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:22:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:22:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:22:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:22:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:22:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:22:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:22:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:22:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:22:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:22:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:22:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:22:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:22:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:22:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:22:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:22:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:22:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:22:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:22:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:22:10,903 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:22:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:22:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:22:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:22:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:22:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:22:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:22:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:22:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:22:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:22:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:22:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:22:10,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:22:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:22:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:22:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:22:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:22:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:22:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:22:10,906 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:22:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:22:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:22:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:22:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:22:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:22:10,907 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:22:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:22:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:22:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:22:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:22:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:22:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:22:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:22:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:22:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:22:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:22:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:22:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:22:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:22:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:22:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:22:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:22:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:22:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:22:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:22:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:22:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:22:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:22:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:22:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:22:10,911 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:22:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:22:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:22:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:22:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:22:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:22:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:22:10,912 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:22:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:22:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:22:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:22:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:22:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:22:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:22:10,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:22:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:22:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:22:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:22:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:22:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:22:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:22:10,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:22:10,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:22:11,506 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:22:11,506 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-13 10:22:11,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:22:11 BoogieIcfgContainer [2020-10-13 10:22:11,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:22:11,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:22:11,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:22:11,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:22:11,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:22:10" (1/3) ... [2020-10-13 10:22:11,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11e5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:22:11, skipping insertion in model container [2020-10-13 10:22:11,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:22:10" (2/3) ... [2020-10-13 10:22:11,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c11e5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:22:11, skipping insertion in model container [2020-10-13 10:22:11,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:22:11" (3/3) ... [2020-10-13 10:22:11,519 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2020-10-13 10:22:11,531 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:22:11,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-13 10:22:11,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-13 10:22:11,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:22:11,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:22:11,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:22:11,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:22:11,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:22:11,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:22:11,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:22:11,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:22:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-13 10:22:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:22:11,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:11,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:11,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:11,616 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-10-13 10:22:11,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:11,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750560167] [2020-10-13 10:22:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:22:12,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-13 10:22:12,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:22:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 10:22:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:12,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:22:12,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:12,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,194 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 10:22:12,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750560167] [2020-10-13 10:22:12,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:22:12,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:22:12,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084812569] [2020-10-13 10:22:12,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:22:12,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:12,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:22:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:22:12,222 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-13 10:22:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:12,348 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-10-13 10:22:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:22:12,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:22:12,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:12,360 INFO L225 Difference]: With dead ends: 67 [2020-10-13 10:22:12,360 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 10:22:12,364 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 10:22:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 10:22:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 10:22:12,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 10:22:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-13 10:22:12,407 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-10-13 10:22:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:12,407 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-13 10:22:12,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:22:12,408 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-13 10:22:12,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:22:12,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:12,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:12,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:22:12,409 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:12,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:12,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-10-13 10:22:12,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:12,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408447118] [2020-10-13 10:22:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:22:12,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-13 10:22:12,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:22:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:12,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:22:12,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:12,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:12,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:12,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,656 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 10:22:12,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408447118] [2020-10-13 10:22:12,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:22:12,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:22:12,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126317310] [2020-10-13 10:22:12,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:22:12,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:12,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:22:12,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:22:12,660 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-10-13 10:22:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:12,764 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-13 10:22:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:22:12,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-13 10:22:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:12,766 INFO L225 Difference]: With dead ends: 37 [2020-10-13 10:22:12,767 INFO L226 Difference]: Without dead ends: 35 [2020-10-13 10:22:12,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 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 10:22:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-13 10:22:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-10-13 10:22:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 10:22:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-13 10:22:12,774 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-10-13 10:22:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:12,774 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-13 10:22:12,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:22:12,775 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-13 10:22:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:22:12,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:12,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:12,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:22:12,776 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:12,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-10-13 10:22:12,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:12,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013148898] [2020-10-13 10:22:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:22:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 10:22:12,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:22:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:22:12,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:12,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:12,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:12,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:12,938 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 10:22:12,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013148898] [2020-10-13 10:22:12,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:22:12,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:22:12,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141107548] [2020-10-13 10:22:12,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:22:12,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:12,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:22:12,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:22:12,943 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-13 10:22:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:13,166 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-13 10:22:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:22:13,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-13 10:22:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:13,168 INFO L225 Difference]: With dead ends: 54 [2020-10-13 10:22:13,168 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:22:13,169 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 10:22:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:22:13,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-10-13 10:22:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 10:22:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-13 10:22:13,177 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-10-13 10:22:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:13,178 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-13 10:22:13,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:22:13,178 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-13 10:22:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:22:13,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:13,180 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:13,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:22:13,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:13,181 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-10-13 10:22:13,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:13,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709248026] [2020-10-13 10:22:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:22:13,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:13,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-13 10:22:13,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:22:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:13,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:22:13,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,736 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 10:22:13,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709248026] [2020-10-13 10:22:13,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:13,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:22:13,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639028558] [2020-10-13 10:22:13,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:22:13,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:13,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:22:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:22:13,742 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-10-13 10:22:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:13,971 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-13 10:22:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:22:13,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-13 10:22:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:13,972 INFO L225 Difference]: With dead ends: 39 [2020-10-13 10:22:13,972 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 10:22:13,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 10:22:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-13 10:22:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 10:22:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-13 10:22:13,978 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-13 10:22:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:13,979 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-13 10:22:13,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:22:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-13 10:22:13,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:22:13,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:13,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:13,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:22:13,981 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:13,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:13,981 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-10-13 10:22:13,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:13,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748458967] [2020-10-13 10:22:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:22:14,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 10:22:14,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:22:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:22:14,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:22:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:14,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:14,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:14,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,213 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 10:22:14,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748458967] [2020-10-13 10:22:14,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:22:14,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:22:14,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180007297] [2020-10-13 10:22:14,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:22:14,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:14,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:22:14,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:22:14,215 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-10-13 10:22:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:14,334 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 10:22:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:22:14,334 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-13 10:22:14,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:14,336 INFO L225 Difference]: With dead ends: 42 [2020-10-13 10:22:14,336 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 10:22:14,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 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 10:22:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 10:22:14,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 10:22:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 10:22:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-13 10:22:14,346 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-10-13 10:22:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:14,347 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-13 10:22:14,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:22:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-13 10:22:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:22:14,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:14,349 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] [2020-10-13 10:22:14,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:22:14,350 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:14,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-10-13 10:22:14,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:14,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124146925] [2020-10-13 10:22:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:22:14,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:14,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 10:22:14,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:22:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:22:14,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:14,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:22:14,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:14,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:14,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:14,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124146925] [2020-10-13 10:22:14,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:14,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:22:14,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197471902] [2020-10-13 10:22:14,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:22:14,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:22:14,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:22:14,592 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-13 10:22:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:14,721 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-13 10:22:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:22:14,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 10:22:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:14,723 INFO L225 Difference]: With dead ends: 53 [2020-10-13 10:22:14,723 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 10:22:14,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:22:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 10:22:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 10:22:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 10:22:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-13 10:22:14,729 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-10-13 10:22:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:14,729 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-13 10:22:14,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:22:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-13 10:22:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:22:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:14,731 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] [2020-10-13 10:22:14,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:22:14,731 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:14,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-10-13 10:22:14,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:14,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842271735] [2020-10-13 10:22:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:22:14,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 10:22:14,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:14,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:22:14,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:15,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:15,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:15,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:15,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:15,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:15,145 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 10:22:15,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842271735] [2020-10-13 10:22:15,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:15,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:15,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41667381] [2020-10-13 10:22:15,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:15,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:15,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:15,149 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-10-13 10:22:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:15,650 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2020-10-13 10:22:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:22:15,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-13 10:22:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:15,652 INFO L225 Difference]: With dead ends: 88 [2020-10-13 10:22:15,653 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 10:22:15,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 10:22:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 46. [2020-10-13 10:22:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:22:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-13 10:22:15,669 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2020-10-13 10:22:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:15,670 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-13 10:22:15,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-13 10:22:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:22:15,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:15,671 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] [2020-10-13 10:22:15,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:22:15,672 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:15,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-10-13 10:22:15,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:15,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870070284] [2020-10-13 10:22:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:15,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:22:15,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-13 10:22:15,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:15,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:22:15,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:16,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:16,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:16,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:22:16,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:16,192 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 10:22:16,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870070284] [2020-10-13 10:22:16,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:16,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:16,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120933853] [2020-10-13 10:22:16,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:16,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:16,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:16,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:16,196 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 9 states. [2020-10-13 10:22:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:16,683 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-13 10:22:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:22:16,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-13 10:22:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:16,686 INFO L225 Difference]: With dead ends: 84 [2020-10-13 10:22:16,686 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 10:22:16,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 10:22:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-13 10:22:16,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 10:22:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-13 10:22:16,704 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2020-10-13 10:22:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:16,704 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-13 10:22:16,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-13 10:22:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:22:16,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:16,705 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] [2020-10-13 10:22:16,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:22:16,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:16,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-10-13 10:22:16,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:16,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824786282] [2020-10-13 10:22:16,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:17,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:22:17,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:17,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-13 10:22:17,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:22:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:22:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:17,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:17,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:17,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:17,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:17,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:17,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:17,231 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 10:22:17,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824786282] [2020-10-13 10:22:17,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:17,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:22:17,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131136461] [2020-10-13 10:22:17,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:22:17,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:22:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:22:17,239 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2020-10-13 10:22:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:17,657 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-10-13 10:22:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:17,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-13 10:22:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:17,659 INFO L225 Difference]: With dead ends: 82 [2020-10-13 10:22:17,659 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 10:22:17,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 10:22:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-10-13 10:22:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:22:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-13 10:22:17,667 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 27 [2020-10-13 10:22:17,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:17,668 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-13 10:22:17,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:22:17,668 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-13 10:22:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:22:17,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:17,669 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:17,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:22:17,670 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1670120370, now seen corresponding path program 2 times [2020-10-13 10:22:17,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:17,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253706748] [2020-10-13 10:22:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:18,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:18,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:22:18,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:18,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-13 10:22:18,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:18,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:18,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:22:18,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:18,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:18,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:18,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:18,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:18,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:18,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:18,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:18,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:18,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253706748] [2020-10-13 10:22:18,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:18,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:18,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108270181] [2020-10-13 10:22:18,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:18,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:18,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:18,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:18,232 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 9 states. [2020-10-13 10:22:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:18,643 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-13 10:22:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:18,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-13 10:22:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:18,646 INFO L225 Difference]: With dead ends: 87 [2020-10-13 10:22:18,646 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:22:18,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:22:18,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2020-10-13 10:22:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:22:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-13 10:22:18,666 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 27 [2020-10-13 10:22:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:18,667 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-13 10:22:18,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-13 10:22:18,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:22:18,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:18,669 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:18,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:22:18,669 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:18,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1148340406, now seen corresponding path program 3 times [2020-10-13 10:22:18,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:18,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309573514] [2020-10-13 10:22:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:22:19,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:19,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-13 10:22:19,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:19,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:22:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:19,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:19,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:19,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:19,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309573514] [2020-10-13 10:22:19,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:19,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:19,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95856357] [2020-10-13 10:22:19,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:19,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:19,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:19,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:19,353 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 11 states. [2020-10-13 10:22:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:19,895 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2020-10-13 10:22:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:19,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-13 10:22:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:19,897 INFO L225 Difference]: With dead ends: 95 [2020-10-13 10:22:19,897 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 10:22:19,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 10:22:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-10-13 10:22:19,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 10:22:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-13 10:22:19,907 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 27 [2020-10-13 10:22:19,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:19,908 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-13 10:22:19,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-13 10:22:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:22:19,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:19,909 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:19,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:22:19,910 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash 18823372, now seen corresponding path program 2 times [2020-10-13 10:22:19,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:19,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769364670] [2020-10-13 10:22:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:19,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:22:20,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:20,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 10:22:20,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:20,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:22:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:20,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:20,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:20,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:20,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:20,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:20,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:20,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769364670] [2020-10-13 10:22:20,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:20,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:20,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994666601] [2020-10-13 10:22:20,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:20,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:20,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:20,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:20,285 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 9 states. [2020-10-13 10:22:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:20,659 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-13 10:22:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:22:20,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-13 10:22:20,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:20,661 INFO L225 Difference]: With dead ends: 80 [2020-10-13 10:22:20,662 INFO L226 Difference]: Without dead ends: 55 [2020-10-13 10:22:20,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:20,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-13 10:22:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-13 10:22:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 10:22:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-13 10:22:20,687 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 27 [2020-10-13 10:22:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:20,688 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-13 10:22:20,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-13 10:22:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:20,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:20,691 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:20,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:22:20,695 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:20,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:20,695 INFO L82 PathProgramCache]: Analyzing trace with hash 798514594, now seen corresponding path program 2 times [2020-10-13 10:22:20,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:20,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009127414] [2020-10-13 10:22:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:21,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:21,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:21,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-13 10:22:21,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:21,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:22:21,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:21,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009127414] [2020-10-13 10:22:21,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:21,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:21,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238193068] [2020-10-13 10:22:21,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:21,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:21,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:21,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:21,607 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 12 states. [2020-10-13 10:22:22,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:22,174 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2020-10-13 10:22:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:22,176 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-13 10:22:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:22,177 INFO L225 Difference]: With dead ends: 96 [2020-10-13 10:22:22,177 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 10:22:22,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 10:22:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2020-10-13 10:22:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 10:22:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-13 10:22:22,192 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 30 [2020-10-13 10:22:22,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:22,192 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-13 10:22:22,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-13 10:22:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:22,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:22,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:22,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:22:22,198 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:22,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1913600758, now seen corresponding path program 4 times [2020-10-13 10:22:22,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:22,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640705445] [2020-10-13 10:22:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:23,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:23,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1410 [2020-10-13 10:22:23,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:22:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:23,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:23,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640705445] [2020-10-13 10:22:23,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:23,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:23,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951267955] [2020-10-13 10:22:23,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:23,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:23,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:23,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:23,901 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 11 states. [2020-10-13 10:22:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:24,514 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-10-13 10:22:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:24,514 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:24,515 INFO L225 Difference]: With dead ends: 117 [2020-10-13 10:22:24,515 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 10:22:24,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 10:22:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72. [2020-10-13 10:22:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:22:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-13 10:22:24,524 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 30 [2020-10-13 10:22:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:24,524 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-13 10:22:24,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-13 10:22:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:24,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:24,526 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:24,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:22:24,526 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:24,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:24,526 INFO L82 PathProgramCache]: Analyzing trace with hash 579659876, now seen corresponding path program 1 times [2020-10-13 10:22:24,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:24,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038052284] [2020-10-13 10:22:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:24,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:24,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:24,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:24,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 10:22:24,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:24,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:24,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:22:24,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:25,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:25,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:25,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038052284] [2020-10-13 10:22:25,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:25,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:25,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801091850] [2020-10-13 10:22:25,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:25,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:25,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:25,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:25,029 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 11 states. [2020-10-13 10:22:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:25,469 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-10-13 10:22:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:25,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:25,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:25,470 INFO L225 Difference]: With dead ends: 98 [2020-10-13 10:22:25,471 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 10:22:25,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 10:22:25,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 72. [2020-10-13 10:22:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:22:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-13 10:22:25,479 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 30 [2020-10-13 10:22:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:25,479 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-13 10:22:25,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-13 10:22:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:25,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:25,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:25,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:22:25,480 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:25,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1694746040, now seen corresponding path program 1 times [2020-10-13 10:22:25,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:25,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799551673] [2020-10-13 10:22:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-13 10:22:25,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:25,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:22:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:26,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:26,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:26,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:26,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:26,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:26,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:26,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799551673] [2020-10-13 10:22:26,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:26,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:26,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170310354] [2020-10-13 10:22:26,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:26,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:26,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:26,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:26,037 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 11 states. [2020-10-13 10:22:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:26,741 INFO L93 Difference]: Finished difference Result 154 states and 173 transitions. [2020-10-13 10:22:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:26,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:26,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:26,743 INFO L225 Difference]: With dead ends: 154 [2020-10-13 10:22:26,743 INFO L226 Difference]: Without dead ends: 152 [2020-10-13 10:22:26,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-13 10:22:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 89. [2020-10-13 10:22:26,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:22:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2020-10-13 10:22:26,752 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 30 [2020-10-13 10:22:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:26,752 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2020-10-13 10:22:26,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2020-10-13 10:22:26,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:26,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:26,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:26,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:22:26,754 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:26,754 INFO L82 PathProgramCache]: Analyzing trace with hash -911277514, now seen corresponding path program 3 times [2020-10-13 10:22:26,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:26,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224400289] [2020-10-13 10:22:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:26,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:26,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:26,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 10:22:26,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:26,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:22:26,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:27,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:27,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:27,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:22:27,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:27,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:27,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:27,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224400289] [2020-10-13 10:22:27,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:27,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:27,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478326238] [2020-10-13 10:22:27,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:27,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:27,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:27,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:27,223 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 11 states. [2020-10-13 10:22:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:27,689 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-10-13 10:22:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:27,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:27,691 INFO L225 Difference]: With dead ends: 146 [2020-10-13 10:22:27,691 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 10:22:27,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:27,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 10:22:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 100. [2020-10-13 10:22:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:22:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2020-10-13 10:22:27,702 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 30 [2020-10-13 10:22:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:27,703 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2020-10-13 10:22:27,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2020-10-13 10:22:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:22:27,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:27,704 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:27,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:22:27,704 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash 499848564, now seen corresponding path program 1 times [2020-10-13 10:22:27,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:27,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796630137] [2020-10-13 10:22:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:22:28,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:22:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:28,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:28,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:28,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796630137] [2020-10-13 10:22:28,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:28,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:22:28,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529037718] [2020-10-13 10:22:28,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:22:28,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:28,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:22:28,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:22:28,175 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 10 states. [2020-10-13 10:22:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:28,546 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-10-13 10:22:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:22:28,547 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-13 10:22:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:28,548 INFO L225 Difference]: With dead ends: 130 [2020-10-13 10:22:28,548 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:22:28,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:22:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-13 10:22:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:22:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-10-13 10:22:28,563 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 32 [2020-10-13 10:22:28,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:28,563 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-10-13 10:22:28,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:22:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-10-13 10:22:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:28,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:28,564 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:28,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:22:28,565 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash -862405126, now seen corresponding path program 3 times [2020-10-13 10:22:28,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:28,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978413055] [2020-10-13 10:22:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:29,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:29,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:29,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-13 10:22:29,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:29,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:29,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:22:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:29,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:29,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:29,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978413055] [2020-10-13 10:22:29,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:29,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:29,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330097498] [2020-10-13 10:22:29,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:29,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:29,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:29,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:29,699 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 14 states. [2020-10-13 10:22:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:30,252 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2020-10-13 10:22:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:30,252 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-13 10:22:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:30,253 INFO L225 Difference]: With dead ends: 120 [2020-10-13 10:22:30,253 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:22:30,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:30,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:22:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2020-10-13 10:22:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:22:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-13 10:22:30,262 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 33 [2020-10-13 10:22:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:30,262 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-13 10:22:30,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-13 10:22:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:30,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:30,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:30,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:22:30,263 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash 842705248, now seen corresponding path program 2 times [2020-10-13 10:22:30,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:30,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286759916] [2020-10-13 10:22:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:30,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:30,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:30,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:30,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-13 10:22:30,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:30,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:30,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:22:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:30,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:30,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:30,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:30,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:30,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:30,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286759916] [2020-10-13 10:22:30,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:30,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:30,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110822942] [2020-10-13 10:22:30,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:30,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:30,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:30,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:30,820 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 12 states. [2020-10-13 10:22:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:31,448 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2020-10-13 10:22:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:31,448 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-13 10:22:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:31,450 INFO L225 Difference]: With dead ends: 114 [2020-10-13 10:22:31,450 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 10:22:31,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 10:22:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 85. [2020-10-13 10:22:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 10:22:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-10-13 10:22:31,458 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 33 [2020-10-13 10:22:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:31,458 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-10-13 10:22:31,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-10-13 10:22:31,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:31,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:31,459 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] [2020-10-13 10:22:31,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:22:31,459 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:31,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1957791412, now seen corresponding path program 2 times [2020-10-13 10:22:31,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:31,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828459813] [2020-10-13 10:22:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:32,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:32,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:32,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 794 [2020-10-13 10:22:32,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:22:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:32,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:32,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:32,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:32,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:32,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:32,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828459813] [2020-10-13 10:22:32,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:32,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:32,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159368395] [2020-10-13 10:22:32,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:32,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:32,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:32,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:32,627 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 11 states. [2020-10-13 10:22:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:33,362 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-13 10:22:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:33,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-13 10:22:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:33,364 INFO L225 Difference]: With dead ends: 119 [2020-10-13 10:22:33,364 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 10:22:33,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 10:22:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2020-10-13 10:22:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:22:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-13 10:22:33,372 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 33 [2020-10-13 10:22:33,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:33,372 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-13 10:22:33,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:33,373 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-13 10:22:33,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:33,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:33,374 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:33,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:22:33,374 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:33,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:33,374 INFO L82 PathProgramCache]: Analyzing trace with hash 112132428, now seen corresponding path program 3 times [2020-10-13 10:22:33,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:33,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782462123] [2020-10-13 10:22:33,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:33,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:33,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-13 10:22:33,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:22:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:34,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:34,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:34,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:34,328 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 10:22:34,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782462123] [2020-10-13 10:22:34,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:34,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:34,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247104076] [2020-10-13 10:22:34,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:34,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:34,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:34,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:34,330 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 13 states. [2020-10-13 10:22:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:35,059 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2020-10-13 10:22:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:35,063 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-13 10:22:35,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:35,065 INFO L225 Difference]: With dead ends: 132 [2020-10-13 10:22:35,065 INFO L226 Difference]: Without dead ends: 130 [2020-10-13 10:22:35,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-13 10:22:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 89. [2020-10-13 10:22:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:22:35,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2020-10-13 10:22:35,074 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 33 [2020-10-13 10:22:35,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:35,074 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2020-10-13 10:22:35,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:35,074 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2020-10-13 10:22:35,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:35,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:35,075 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:35,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:22:35,075 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:35,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1738936694, now seen corresponding path program 4 times [2020-10-13 10:22:35,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:35,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62025217] [2020-10-13 10:22:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:35,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:35,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:35,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-13 10:22:35,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:22:35,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:35,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:35,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:35,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:35,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:35,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62025217] [2020-10-13 10:22:35,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:35,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:35,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854657103] [2020-10-13 10:22:35,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:35,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:35,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:35,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:35,720 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 11 states. [2020-10-13 10:22:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:36,167 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2020-10-13 10:22:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:36,167 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-13 10:22:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:36,168 INFO L225 Difference]: With dead ends: 103 [2020-10-13 10:22:36,168 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:22:36,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:22:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-13 10:22:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:22:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-13 10:22:36,181 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 33 [2020-10-13 10:22:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:36,182 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-13 10:22:36,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-13 10:22:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:22:36,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:36,182 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:36,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:22:36,183 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:36,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2083831756, now seen corresponding path program 2 times [2020-10-13 10:22:36,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:36,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488332916] [2020-10-13 10:22:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:36,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:36,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:22:36,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-13 10:22:36,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:36,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:36,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:36,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:36,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:37,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:37,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:37,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:37,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:37,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:37,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:37,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:37,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488332916] [2020-10-13 10:22:37,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:37,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:37,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15213217] [2020-10-13 10:22:37,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:37,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:37,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:37,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:37,150 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 13 states. [2020-10-13 10:22:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:38,192 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2020-10-13 10:22:38,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:38,192 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-13 10:22:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:38,194 INFO L225 Difference]: With dead ends: 208 [2020-10-13 10:22:38,194 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 10:22:38,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 10:22:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 111. [2020-10-13 10:22:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 10:22:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-10-13 10:22:38,206 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 35 [2020-10-13 10:22:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:38,207 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-10-13 10:22:38,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-10-13 10:22:38,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:22:38,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:38,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:38,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:22:38,208 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:38,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2077122034, now seen corresponding path program 1 times [2020-10-13 10:22:38,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:38,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114488053] [2020-10-13 10:22:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:38,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:38,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:22:38,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:38,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 10:22:38,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:22:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:38,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:38,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:38,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:38,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:38,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114488053] [2020-10-13 10:22:38,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:38,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:38,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136231338] [2020-10-13 10:22:38,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:38,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:38,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:38,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:38,914 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 13 states. [2020-10-13 10:22:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:39,732 INFO L93 Difference]: Finished difference Result 189 states and 209 transitions. [2020-10-13 10:22:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:39,733 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-13 10:22:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:39,735 INFO L225 Difference]: With dead ends: 189 [2020-10-13 10:22:39,735 INFO L226 Difference]: Without dead ends: 177 [2020-10-13 10:22:39,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-13 10:22:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-13 10:22:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 10:22:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 165 transitions. [2020-10-13 10:22:39,753 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 165 transitions. Word has length 35 [2020-10-13 10:22:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:39,753 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 165 transitions. [2020-10-13 10:22:39,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 165 transitions. [2020-10-13 10:22:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:22:39,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:39,754 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:39,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:22:39,755 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:39,755 INFO L82 PathProgramCache]: Analyzing trace with hash -943401652, now seen corresponding path program 3 times [2020-10-13 10:22:39,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:39,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24241166] [2020-10-13 10:22:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:40,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:40,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:22:40,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:40,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-13 10:22:40,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:40,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:22:40,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:40,848 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 10:22:40,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24241166] [2020-10-13 10:22:40,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:40,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:40,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858008168] [2020-10-13 10:22:40,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:40,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:40,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:40,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:40,850 INFO L87 Difference]: Start difference. First operand 148 states and 165 transitions. Second operand 14 states. [2020-10-13 10:22:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:41,852 INFO L93 Difference]: Finished difference Result 201 states and 225 transitions. [2020-10-13 10:22:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:41,853 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-13 10:22:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:41,854 INFO L225 Difference]: With dead ends: 201 [2020-10-13 10:22:41,855 INFO L226 Difference]: Without dead ends: 199 [2020-10-13 10:22:41,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-13 10:22:41,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 165. [2020-10-13 10:22:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 10:22:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-10-13 10:22:41,869 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 36 [2020-10-13 10:22:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:41,870 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-10-13 10:22:41,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-10-13 10:22:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:22:41,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:41,871 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:41,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:22:41,871 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash 171684512, now seen corresponding path program 4 times [2020-10-13 10:22:41,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:41,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021544409] [2020-10-13 10:22:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:41,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:43,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:22:43,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:43,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-13 10:22:43,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:43,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:43,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:22:43,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:43,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:43,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:43,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:43,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:43,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:43,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:43,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:43,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:43,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021544409] [2020-10-13 10:22:43,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:43,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:43,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473516381] [2020-10-13 10:22:43,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:43,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:43,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:43,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:43,578 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 13 states. [2020-10-13 10:22:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:44,254 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2020-10-13 10:22:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:44,254 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-13 10:22:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:44,255 INFO L225 Difference]: With dead ends: 216 [2020-10-13 10:22:44,256 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 10:22:44,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 10:22:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 168. [2020-10-13 10:22:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-13 10:22:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2020-10-13 10:22:44,271 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 36 [2020-10-13 10:22:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:44,272 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2020-10-13 10:22:44,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2020-10-13 10:22:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:22:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:44,273 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:44,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:22:44,273 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:44,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1083950262, now seen corresponding path program 4 times [2020-10-13 10:22:44,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:44,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113378776] [2020-10-13 10:22:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:44,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:44,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:22:44,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-13 10:22:44,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:22:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:45,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:45,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:45,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:45,078 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 10:22:45,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113378776] [2020-10-13 10:22:45,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:45,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:45,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025897736] [2020-10-13 10:22:45,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:45,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:45,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:45,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:45,080 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 13 states. [2020-10-13 10:22:45,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:45,677 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2020-10-13 10:22:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:45,677 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-13 10:22:45,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:45,679 INFO L225 Difference]: With dead ends: 211 [2020-10-13 10:22:45,679 INFO L226 Difference]: Without dead ends: 198 [2020-10-13 10:22:45,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-13 10:22:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-10-13 10:22:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-13 10:22:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 182 transitions. [2020-10-13 10:22:45,698 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 182 transitions. Word has length 36 [2020-10-13 10:22:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:45,699 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 182 transitions. [2020-10-13 10:22:45,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 182 transitions. [2020-10-13 10:22:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:45,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:45,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:45,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:45,700 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:45,700 INFO L82 PathProgramCache]: Analyzing trace with hash -21461300, now seen corresponding path program 1 times [2020-10-13 10:22:45,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:45,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317840711] [2020-10-13 10:22:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:46,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:46,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:46,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:46,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-13 10:22:46,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:46,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:46,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:22:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:46,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:46,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:46,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:46,501 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 10:22:46,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317840711] [2020-10-13 10:22:46,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:46,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:46,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899093754] [2020-10-13 10:22:46,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:46,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:46,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:46,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:46,502 INFO L87 Difference]: Start difference. First operand 163 states and 182 transitions. Second operand 14 states. [2020-10-13 10:22:47,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:47,663 INFO L93 Difference]: Finished difference Result 214 states and 236 transitions. [2020-10-13 10:22:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:22:47,663 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-13 10:22:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:47,665 INFO L225 Difference]: With dead ends: 214 [2020-10-13 10:22:47,665 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 10:22:47,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 10:22:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 171. [2020-10-13 10:22:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-13 10:22:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 191 transitions. [2020-10-13 10:22:47,697 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 191 transitions. Word has length 38 [2020-10-13 10:22:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:47,698 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 191 transitions. [2020-10-13 10:22:47,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 191 transitions. [2020-10-13 10:22:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:47,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:47,699 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:47,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:47,700 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1093624864, now seen corresponding path program 3 times [2020-10-13 10:22:47,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:47,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924684573] [2020-10-13 10:22:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:47,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:48,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1173 [2020-10-13 10:22:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:48,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:22:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:49,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:49,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:49,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:49,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:49,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:49,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:49,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:49,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:49,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:49,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:49,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924684573] [2020-10-13 10:22:49,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:49,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:49,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522253797] [2020-10-13 10:22:49,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:49,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:49,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:49,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:49,244 INFO L87 Difference]: Start difference. First operand 171 states and 191 transitions. Second operand 13 states. [2020-10-13 10:22:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:49,889 INFO L93 Difference]: Finished difference Result 200 states and 222 transitions. [2020-10-13 10:22:49,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:49,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-13 10:22:49,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:49,891 INFO L225 Difference]: With dead ends: 200 [2020-10-13 10:22:49,891 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 10:22:49,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 10:22:49,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 163. [2020-10-13 10:22:49,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-13 10:22:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 182 transitions. [2020-10-13 10:22:49,906 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 182 transitions. Word has length 38 [2020-10-13 10:22:49,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:49,907 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 182 transitions. [2020-10-13 10:22:49,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 182 transitions. [2020-10-13 10:22:49,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:49,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:49,908 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:49,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:49,908 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:49,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1721423476, now seen corresponding path program 4 times [2020-10-13 10:22:49,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:49,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762721504] [2020-10-13 10:22:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:50,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:50,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-13 10:22:50,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:22:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:50,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:50,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:50,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:50,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:50,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:50,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762721504] [2020-10-13 10:22:50,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:50,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:50,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556712527] [2020-10-13 10:22:50,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:50,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:50,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:50,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:50,989 INFO L87 Difference]: Start difference. First operand 163 states and 182 transitions. Second operand 15 states. [2020-10-13 10:22:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:52,217 INFO L93 Difference]: Finished difference Result 250 states and 277 transitions. [2020-10-13 10:22:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:52,217 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-13 10:22:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:52,219 INFO L225 Difference]: With dead ends: 250 [2020-10-13 10:22:52,219 INFO L226 Difference]: Without dead ends: 248 [2020-10-13 10:22:52,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-13 10:22:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 176. [2020-10-13 10:22:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 10:22:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2020-10-13 10:22:52,236 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 38 [2020-10-13 10:22:52,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:52,237 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2020-10-13 10:22:52,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:52,237 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2020-10-13 10:22:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:52,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:52,238 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:52,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:52,238 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:52,239 INFO L82 PathProgramCache]: Analyzing trace with hash -829603170, now seen corresponding path program 2 times [2020-10-13 10:22:52,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:52,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415123407] [2020-10-13 10:22:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:52,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:52,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:52,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:52,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:52,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-13 10:22:52,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:52,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:52,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:52,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:22:52,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:53,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:53,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:53,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:53,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:53,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:53,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415123407] [2020-10-13 10:22:53,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:53,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:53,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367152701] [2020-10-13 10:22:53,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:53,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:53,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:53,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:53,096 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand 13 states. [2020-10-13 10:22:53,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:53,859 INFO L93 Difference]: Finished difference Result 209 states and 230 transitions. [2020-10-13 10:22:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:53,859 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-13 10:22:53,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:53,861 INFO L225 Difference]: With dead ends: 209 [2020-10-13 10:22:53,861 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 10:22:53,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 10:22:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-10-13 10:22:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 10:22:53,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2020-10-13 10:22:53,874 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 38 [2020-10-13 10:22:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:53,874 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2020-10-13 10:22:53,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2020-10-13 10:22:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:22:53,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:53,875 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:53,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:53,875 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:53,876 INFO L82 PathProgramCache]: Analyzing trace with hash -504229408, now seen corresponding path program 5 times [2020-10-13 10:22:53,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:53,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983544387] [2020-10-13 10:22:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:22:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:54,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:54,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:54,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:54,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:54,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:54,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:54,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:54,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983544387] [2020-10-13 10:22:54,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:54,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:54,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866968771] [2020-10-13 10:22:54,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:54,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:54,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:54,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:54,950 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand 16 states. [2020-10-13 10:22:56,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:56,091 INFO L93 Difference]: Finished difference Result 178 states and 197 transitions. [2020-10-13 10:22:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:56,091 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-13 10:22:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:56,093 INFO L225 Difference]: With dead ends: 178 [2020-10-13 10:22:56,093 INFO L226 Difference]: Without dead ends: 176 [2020-10-13 10:22:56,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:22:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-13 10:22:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 126. [2020-10-13 10:22:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-13 10:22:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2020-10-13 10:22:56,107 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 39 [2020-10-13 10:22:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:56,107 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2020-10-13 10:22:56,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:22:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2020-10-13 10:22:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:22:56,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:56,108 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:56,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:56,109 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash 5243682, now seen corresponding path program 6 times [2020-10-13 10:22:56,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:56,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172285535] [2020-10-13 10:22:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:56,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:56,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:57,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:57,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:57,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172285535] [2020-10-13 10:22:57,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:57,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:57,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683457398] [2020-10-13 10:22:57,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:57,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:57,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:57,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:57,093 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand 15 states. [2020-10-13 10:22:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:57,882 INFO L93 Difference]: Finished difference Result 163 states and 180 transitions. [2020-10-13 10:22:57,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:57,883 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-13 10:22:57,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:57,884 INFO L225 Difference]: With dead ends: 163 [2020-10-13 10:22:57,884 INFO L226 Difference]: Without dead ends: 150 [2020-10-13 10:22:57,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:57,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-13 10:22:57,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 126. [2020-10-13 10:22:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-13 10:22:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-10-13 10:22:57,899 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 39 [2020-10-13 10:22:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:57,899 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-10-13 10:22:57,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-10-13 10:22:57,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:22:57,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:57,904 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:57,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:57,905 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:57,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1021251364, now seen corresponding path program 2 times [2020-10-13 10:22:57,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:57,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24002978] [2020-10-13 10:22:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:58,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:58,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:22:58,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-13 10:22:58,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:22:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:59,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:59,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:59,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:59,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:59,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:59,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:59,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:59,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:59,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:59,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24002978] [2020-10-13 10:22:59,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:59,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:59,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342972831] [2020-10-13 10:22:59,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:59,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:59,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:59,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:59,025 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 16 states. [2020-10-13 10:23:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:00,169 INFO L93 Difference]: Finished difference Result 208 states and 233 transitions. [2020-10-13 10:23:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:00,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-13 10:23:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:00,171 INFO L225 Difference]: With dead ends: 208 [2020-10-13 10:23:00,171 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 10:23:00,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:23:00,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 10:23:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165. [2020-10-13 10:23:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 10:23:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2020-10-13 10:23:00,187 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 41 [2020-10-13 10:23:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:00,187 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2020-10-13 10:23:00,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2020-10-13 10:23:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:23:00,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:00,188 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:00,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:23:00,189 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:00,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:00,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2136337528, now seen corresponding path program 5 times [2020-10-13 10:23:00,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:00,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886933620] [2020-10-13 10:23:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:01,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:23:01,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1686 [2020-10-13 10:23:01,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:23:01,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:02,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:02,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886933620] [2020-10-13 10:23:02,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:02,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:02,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756312953] [2020-10-13 10:23:02,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:02,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:02,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:02,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:02,312 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand 15 states. [2020-10-13 10:23:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:03,056 INFO L93 Difference]: Finished difference Result 241 states and 267 transitions. [2020-10-13 10:23:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:23:03,056 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:23:03,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:03,058 INFO L225 Difference]: With dead ends: 241 [2020-10-13 10:23:03,058 INFO L226 Difference]: Without dead ends: 229 [2020-10-13 10:23:03,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:23:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-13 10:23:03,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 171. [2020-10-13 10:23:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-13 10:23:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 193 transitions. [2020-10-13 10:23:03,077 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 193 transitions. Word has length 41 [2020-10-13 10:23:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:03,078 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 193 transitions. [2020-10-13 10:23:03,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 193 transitions. [2020-10-13 10:23:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:23:03,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:03,079 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:03,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:23:03,079 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:03,079 INFO L82 PathProgramCache]: Analyzing trace with hash 998619110, now seen corresponding path program 1 times [2020-10-13 10:23:03,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:03,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364100903] [2020-10-13 10:23:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:03,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:03,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:23:03,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-13 10:23:03,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:23:03,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:04,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:04,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:04,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:04,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:04,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:04,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:04,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:04,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:04,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364100903] [2020-10-13 10:23:04,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:04,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:04,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497427077] [2020-10-13 10:23:04,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:04,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:04,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:04,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:04,172 INFO L87 Difference]: Start difference. First operand 171 states and 193 transitions. Second operand 15 states. [2020-10-13 10:23:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:05,104 INFO L93 Difference]: Finished difference Result 270 states and 307 transitions. [2020-10-13 10:23:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:23:05,105 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:23:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:05,106 INFO L225 Difference]: With dead ends: 270 [2020-10-13 10:23:05,107 INFO L226 Difference]: Without dead ends: 257 [2020-10-13 10:23:05,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:23:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-13 10:23:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 210. [2020-10-13 10:23:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-13 10:23:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 236 transitions. [2020-10-13 10:23:05,124 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 236 transitions. Word has length 41 [2020-10-13 10:23:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:05,124 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 236 transitions. [2020-10-13 10:23:05,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 236 transitions. [2020-10-13 10:23:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:23:05,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:05,125 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:05,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:23:05,125 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:05,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2113705274, now seen corresponding path program 3 times [2020-10-13 10:23:05,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:05,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122835294] [2020-10-13 10:23:05,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:05,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:23:05,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-13 10:23:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:23:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:06,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:06,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:06,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:06,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:06,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:06,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:06,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:06,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122835294] [2020-10-13 10:23:06,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:06,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:06,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870039199] [2020-10-13 10:23:06,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:06,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:06,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:06,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:06,117 INFO L87 Difference]: Start difference. First operand 210 states and 236 transitions. Second operand 15 states. [2020-10-13 10:23:07,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:07,487 INFO L93 Difference]: Finished difference Result 378 states and 421 transitions. [2020-10-13 10:23:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:23:07,488 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:23:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:07,490 INFO L225 Difference]: With dead ends: 378 [2020-10-13 10:23:07,490 INFO L226 Difference]: Without dead ends: 376 [2020-10-13 10:23:07,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:23:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-13 10:23:07,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 251. [2020-10-13 10:23:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-13 10:23:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 281 transitions. [2020-10-13 10:23:07,516 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 281 transitions. Word has length 41 [2020-10-13 10:23:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:07,516 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 281 transitions. [2020-10-13 10:23:07,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 281 transitions. [2020-10-13 10:23:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:23:07,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:07,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:07,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:23:07,517 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:07,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:07,518 INFO L82 PathProgramCache]: Analyzing trace with hash 190477240, now seen corresponding path program 4 times [2020-10-13 10:23:07,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:07,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321909240] [2020-10-13 10:23:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:07,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:23:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:08,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:08,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:08,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:08,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:08,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321909240] [2020-10-13 10:23:08,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:08,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:08,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304157108] [2020-10-13 10:23:08,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:08,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:08,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:08,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:08,329 INFO L87 Difference]: Start difference. First operand 251 states and 281 transitions. Second operand 15 states. [2020-10-13 10:23:09,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:09,310 INFO L93 Difference]: Finished difference Result 338 states and 372 transitions. [2020-10-13 10:23:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:23:09,311 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:23:09,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:09,313 INFO L225 Difference]: With dead ends: 338 [2020-10-13 10:23:09,313 INFO L226 Difference]: Without dead ends: 326 [2020-10-13 10:23:09,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:23:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-13 10:23:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 275. [2020-10-13 10:23:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-13 10:23:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 306 transitions. [2020-10-13 10:23:09,337 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 306 transitions. Word has length 41 [2020-10-13 10:23:09,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:09,338 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 306 transitions. [2020-10-13 10:23:09,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:09,338 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 306 transitions. [2020-10-13 10:23:09,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:23:09,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:09,339 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:09,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:23:09,339 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:09,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1601290466, now seen corresponding path program 6 times [2020-10-13 10:23:09,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:09,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463844130] [2020-10-13 10:23:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:09,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:23:09,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-13 10:23:09,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:23:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:23:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:10,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:10,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463844130] [2020-10-13 10:23:10,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:10,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:23:10,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032856638] [2020-10-13 10:23:10,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:23:10,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:10,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:23:10,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:23:10,205 INFO L87 Difference]: Start difference. First operand 275 states and 306 transitions. Second operand 14 states. [2020-10-13 10:23:11,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:11,069 INFO L93 Difference]: Finished difference Result 327 states and 359 transitions. [2020-10-13 10:23:11,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:23:11,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-13 10:23:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:11,071 INFO L225 Difference]: With dead ends: 327 [2020-10-13 10:23:11,071 INFO L226 Difference]: Without dead ends: 275 [2020-10-13 10:23:11,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:23:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-13 10:23:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2020-10-13 10:23:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-13 10:23:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 304 transitions. [2020-10-13 10:23:11,100 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 304 transitions. Word has length 43 [2020-10-13 10:23:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:11,100 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 304 transitions. [2020-10-13 10:23:11,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:23:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 304 transitions. [2020-10-13 10:23:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:23:11,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:11,101 INFO L422 BasicCegarLoop]: trace histogram [5, 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 10:23:11,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:23:11,101 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1024227380, now seen corresponding path program 3 times [2020-10-13 10:23:11,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:11,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268483519] [2020-10-13 10:23:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:11,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:11,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:23:11,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-13 10:23:11,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:11,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:23:11,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:12,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:12,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:12,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:12,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:12,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:12,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:12,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:12,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:12,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268483519] [2020-10-13 10:23:12,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:12,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:12,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894756468] [2020-10-13 10:23:12,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:12,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:12,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:12,611 INFO L87 Difference]: Start difference. First operand 275 states and 304 transitions. Second operand 17 states. [2020-10-13 10:23:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:13,727 INFO L93 Difference]: Finished difference Result 307 states and 337 transitions. [2020-10-13 10:23:13,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:13,728 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-13 10:23:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:13,730 INFO L225 Difference]: With dead ends: 307 [2020-10-13 10:23:13,730 INFO L226 Difference]: Without dead ends: 305 [2020-10-13 10:23:13,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:23:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-10-13 10:23:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 236. [2020-10-13 10:23:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-13 10:23:13,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2020-10-13 10:23:13,763 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 44 [2020-10-13 10:23:13,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:13,763 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2020-10-13 10:23:13,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2020-10-13 10:23:13,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:23:13,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:13,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:13,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:23:13,765 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash 882283166, now seen corresponding path program 2 times [2020-10-13 10:23:13,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:13,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022716633] [2020-10-13 10:23:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:13,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:14,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:23:14,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-13 10:23:14,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:23:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:14,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:14,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:14,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:23:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:14,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022716633] [2020-10-13 10:23:14,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:14,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:14,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507293369] [2020-10-13 10:23:14,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:14,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:14,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:14,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:14,829 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand 16 states. [2020-10-13 10:23:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:16,222 INFO L93 Difference]: Finished difference Result 295 states and 328 transitions. [2020-10-13 10:23:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:16,223 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-13 10:23:16,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:16,224 INFO L225 Difference]: With dead ends: 295 [2020-10-13 10:23:16,225 INFO L226 Difference]: Without dead ends: 293 [2020-10-13 10:23:16,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:23:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-13 10:23:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 257. [2020-10-13 10:23:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-13 10:23:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 283 transitions. [2020-10-13 10:23:16,251 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 283 transitions. Word has length 44 [2020-10-13 10:23:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:16,252 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 283 transitions. [2020-10-13 10:23:16,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 283 transitions. [2020-10-13 10:23:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:23:16,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:16,253 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:16,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:23:16,253 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1997369330, now seen corresponding path program 5 times [2020-10-13 10:23:16,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:16,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744613779] [2020-10-13 10:23:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:17,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:17,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:23:17,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-13 10:23:17,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:17,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:23:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:17,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:17,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:17,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:17,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:17,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:17,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:17,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744613779] [2020-10-13 10:23:17,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:17,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:17,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556717572] [2020-10-13 10:23:17,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:17,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:17,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:17,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:17,820 INFO L87 Difference]: Start difference. First operand 257 states and 283 transitions. Second operand 15 states. [2020-10-13 10:23:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:18,705 INFO L93 Difference]: Finished difference Result 285 states and 313 transitions. [2020-10-13 10:23:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:23:18,706 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-13 10:23:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:18,708 INFO L225 Difference]: With dead ends: 285 [2020-10-13 10:23:18,708 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 10:23:18,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 10:23:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 236. [2020-10-13 10:23:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-13 10:23:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2020-10-13 10:23:18,731 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 44 [2020-10-13 10:23:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:18,731 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2020-10-13 10:23:18,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2020-10-13 10:23:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:23:18,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:18,732 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:18,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:23:18,732 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:18,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:18,733 INFO L82 PathProgramCache]: Analyzing trace with hash -951840822, now seen corresponding path program 3 times [2020-10-13 10:23:18,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:18,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359361766] [2020-10-13 10:23:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:19,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:19,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:23:19,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-13 10:23:19,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:19,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:23:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:20,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:20,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:20,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:20,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:23:20,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:20,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359361766] [2020-10-13 10:23:20,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:20,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:23:20,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755745312] [2020-10-13 10:23:20,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:23:20,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:20,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:23:20,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:23:20,053 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand 16 states. [2020-10-13 10:23:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:21,035 INFO L93 Difference]: Finished difference Result 314 states and 346 transitions. [2020-10-13 10:23:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:23:21,036 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-13 10:23:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:21,038 INFO L225 Difference]: With dead ends: 314 [2020-10-13 10:23:21,038 INFO L226 Difference]: Without dead ends: 301 [2020-10-13 10:23:21,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:23:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-13 10:23:21,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 214. [2020-10-13 10:23:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-13 10:23:21,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2020-10-13 10:23:21,056 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 44 [2020-10-13 10:23:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:21,056 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2020-10-13 10:23:21,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:23:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2020-10-13 10:23:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:23:21,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:21,058 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:21,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:23:21,058 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:21,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:21,058 INFO L82 PathProgramCache]: Analyzing trace with hash 163245342, now seen corresponding path program 6 times [2020-10-13 10:23:21,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:21,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724323337] [2020-10-13 10:23:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:21,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:21,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:23:21,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-13 10:23:21,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:21,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:21,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:23:21,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:22,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:22,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:22,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:22,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:22,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:22,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:22,618 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 10:23:22,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724323337] [2020-10-13 10:23:22,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:22,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:22,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616728471] [2020-10-13 10:23:22,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:22,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:22,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:22,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:22,619 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand 17 states. [2020-10-13 10:23:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:24,391 INFO L93 Difference]: Finished difference Result 323 states and 360 transitions. [2020-10-13 10:23:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:23:24,391 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-13 10:23:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:24,393 INFO L225 Difference]: With dead ends: 323 [2020-10-13 10:23:24,393 INFO L226 Difference]: Without dead ends: 321 [2020-10-13 10:23:24,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-13 10:23:24,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 252. [2020-10-13 10:23:24,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-13 10:23:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2020-10-13 10:23:24,418 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 44 [2020-10-13 10:23:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:24,418 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2020-10-13 10:23:24,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2020-10-13 10:23:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:23:24,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:24,419 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:24,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:23:24,419 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:24,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1974737076, now seen corresponding path program 7 times [2020-10-13 10:23:24,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:24,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755286365] [2020-10-13 10:23:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:24,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:23:24,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:25,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:25,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:25,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:25,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:25,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755286365] [2020-10-13 10:23:25,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:25,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:25,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522605864] [2020-10-13 10:23:25,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:25,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:25,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:25,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:25,313 INFO L87 Difference]: Start difference. First operand 252 states and 277 transitions. Second operand 15 states. [2020-10-13 10:23:26,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:26,422 INFO L93 Difference]: Finished difference Result 266 states and 292 transitions. [2020-10-13 10:23:26,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:23:26,422 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-13 10:23:26,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:26,424 INFO L225 Difference]: With dead ends: 266 [2020-10-13 10:23:26,424 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 10:23:26,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:23:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 10:23:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-13 10:23:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 10:23:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2020-10-13 10:23:26,448 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 44 [2020-10-13 10:23:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:26,448 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2020-10-13 10:23:26,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2020-10-13 10:23:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:23:26,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:26,449 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:23:26,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:23:26,450 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:26,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:26,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1303728246, now seen corresponding path program 7 times [2020-10-13 10:23:26,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:26,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506493273] [2020-10-13 10:23:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:26,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:27,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:27,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:23:27,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:27,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-10-13 10:23:27,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:27,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:27,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:23:27,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,635 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-13 10:23:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:27,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:27,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:27,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:27,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:23:27,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:27,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:27,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:27,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506493273] [2020-10-13 10:23:27,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:27,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:27,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150290067] [2020-10-13 10:23:27,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:27,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:27,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:27,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:27,874 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand 17 states. [2020-10-13 10:23:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:29,713 INFO L93 Difference]: Finished difference Result 499 states and 552 transitions. [2020-10-13 10:23:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:29,714 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-13 10:23:29,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:29,717 INFO L225 Difference]: With dead ends: 499 [2020-10-13 10:23:29,717 INFO L226 Difference]: Without dead ends: 497 [2020-10-13 10:23:29,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-10-13 10:23:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 292. [2020-10-13 10:23:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-13 10:23:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 325 transitions. [2020-10-13 10:23:29,744 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 325 transitions. Word has length 46 [2020-10-13 10:23:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:29,744 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 325 transitions. [2020-10-13 10:23:29,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 325 transitions. [2020-10-13 10:23:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:23:29,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:29,746 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:29,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:23:29,746 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:29,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:29,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1578487860, now seen corresponding path program 8 times [2020-10-13 10:23:29,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:29,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339216308] [2020-10-13 10:23:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:30,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:23:30,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:30,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-13 10:23:30,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:23:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:30,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:30,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:30,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:30,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:30,772 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:30,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339216308] [2020-10-13 10:23:30,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:30,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:30,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893667714] [2020-10-13 10:23:30,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:30,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:30,774 INFO L87 Difference]: Start difference. First operand 292 states and 325 transitions. Second operand 17 states. [2020-10-13 10:23:32,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:32,394 INFO L93 Difference]: Finished difference Result 455 states and 497 transitions. [2020-10-13 10:23:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:32,394 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-13 10:23:32,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:32,397 INFO L225 Difference]: With dead ends: 455 [2020-10-13 10:23:32,397 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 10:23:32,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:32,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 10:23:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 398. [2020-10-13 10:23:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-13 10:23:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 437 transitions. [2020-10-13 10:23:32,434 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 437 transitions. Word has length 46 [2020-10-13 10:23:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:32,434 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 437 transitions. [2020-10-13 10:23:32,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 437 transitions. [2020-10-13 10:23:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:32,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:32,436 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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 10:23:32,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:23:32,436 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:32,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1342996538, now seen corresponding path program 4 times [2020-10-13 10:23:32,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:32,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848055061] [2020-10-13 10:23:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:33,632 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-13 10:23:33,781 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-13 10:23:34,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:34,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:34,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:34,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:34,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:34,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:34,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848055061] [2020-10-13 10:23:34,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:34,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:23:34,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3587896] [2020-10-13 10:23:34,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:23:34,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:34,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:23:34,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:34,086 INFO L87 Difference]: Start difference. First operand 398 states and 437 transitions. Second operand 18 states. [2020-10-13 10:23:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:35,840 INFO L93 Difference]: Finished difference Result 537 states and 596 transitions. [2020-10-13 10:23:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:23:35,841 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-13 10:23:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:35,844 INFO L225 Difference]: With dead ends: 537 [2020-10-13 10:23:35,844 INFO L226 Difference]: Without dead ends: 535 [2020-10-13 10:23:35,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:23:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-10-13 10:23:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 462. [2020-10-13 10:23:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-13 10:23:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 508 transitions. [2020-10-13 10:23:35,896 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 508 transitions. Word has length 47 [2020-10-13 10:23:35,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:35,896 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 508 transitions. [2020-10-13 10:23:35,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:23:35,896 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 508 transitions. [2020-10-13 10:23:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:35,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:35,898 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:35,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:23:35,898 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:35,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1836884594, now seen corresponding path program 9 times [2020-10-13 10:23:35,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:35,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989315878] [2020-10-13 10:23:35,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:36,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:38,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:38,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:38,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:38,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-10-13 10:23:38,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:23:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:39,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:39,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:39,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:39,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:39,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:39,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:39,226 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:39,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989315878] [2020-10-13 10:23:39,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:39,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:39,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872559909] [2020-10-13 10:23:39,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:39,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:39,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:39,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:39,228 INFO L87 Difference]: Start difference. First operand 462 states and 508 transitions. Second operand 17 states. [2020-10-13 10:23:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:40,910 INFO L93 Difference]: Finished difference Result 609 states and 675 transitions. [2020-10-13 10:23:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:40,911 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-13 10:23:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:40,914 INFO L225 Difference]: With dead ends: 609 [2020-10-13 10:23:40,914 INFO L226 Difference]: Without dead ends: 597 [2020-10-13 10:23:40,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:23:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-13 10:23:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 471. [2020-10-13 10:23:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-10-13 10:23:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 522 transitions. [2020-10-13 10:23:40,959 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 522 transitions. Word has length 47 [2020-10-13 10:23:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:40,959 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 522 transitions. [2020-10-13 10:23:40,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 522 transitions. [2020-10-13 10:23:40,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:40,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:40,960 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:40,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:23:40,960 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:40,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1415383096, now seen corresponding path program 5 times [2020-10-13 10:23:40,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:40,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124361494] [2020-10-13 10:23:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:41,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-13 10:23:41,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:23:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:42,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:42,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:42,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:42,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124361494] [2020-10-13 10:23:42,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:42,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:42,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751931311] [2020-10-13 10:23:42,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:42,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:42,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:42,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:42,611 INFO L87 Difference]: Start difference. First operand 471 states and 522 transitions. Second operand 17 states. [2020-10-13 10:23:43,449 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-13 10:23:43,595 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-13 10:23:43,837 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-13 10:23:44,254 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-13 10:23:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:45,100 INFO L93 Difference]: Finished difference Result 518 states and 577 transitions. [2020-10-13 10:23:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:23:45,100 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-13 10:23:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:45,103 INFO L225 Difference]: With dead ends: 518 [2020-10-13 10:23:45,103 INFO L226 Difference]: Without dead ends: 505 [2020-10-13 10:23:45,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:23:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-10-13 10:23:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 450. [2020-10-13 10:23:45,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-13 10:23:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 499 transitions. [2020-10-13 10:23:45,156 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 499 transitions. Word has length 47 [2020-10-13 10:23:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:45,157 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 499 transitions. [2020-10-13 10:23:45,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 499 transitions. [2020-10-13 10:23:45,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:45,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:45,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:45,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:23:45,159 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:45,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:45,159 INFO L82 PathProgramCache]: Analyzing trace with hash 25073230, now seen corresponding path program 4 times [2020-10-13 10:23:45,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:45,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144641450] [2020-10-13 10:23:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:45,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:46,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:46,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:46,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:46,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-13 10:23:46,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:46,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:23:46,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:46,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:46,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:46,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:46,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:46,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:46,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:46,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:46,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144641450] [2020-10-13 10:23:46,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:46,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:23:46,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532646165] [2020-10-13 10:23:46,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:23:46,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:46,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:23:46,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:46,850 INFO L87 Difference]: Start difference. First operand 450 states and 499 transitions. Second operand 18 states. [2020-10-13 10:23:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:49,030 INFO L93 Difference]: Finished difference Result 571 states and 623 transitions. [2020-10-13 10:23:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:23:49,031 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-13 10:23:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:49,034 INFO L225 Difference]: With dead ends: 571 [2020-10-13 10:23:49,034 INFO L226 Difference]: Without dead ends: 569 [2020-10-13 10:23:49,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:23:49,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2020-10-13 10:23:49,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 487. [2020-10-13 10:23:49,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2020-10-13 10:23:49,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 537 transitions. [2020-10-13 10:23:49,092 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 537 transitions. Word has length 49 [2020-10-13 10:23:49,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:49,092 INFO L479 AbstractCegarLoop]: Abstraction has 487 states and 537 transitions. [2020-10-13 10:23:49,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:23:49,092 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 537 transitions. [2020-10-13 10:23:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:49,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:49,094 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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 10:23:49,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:23:49,094 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:49,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1140159394, now seen corresponding path program 8 times [2020-10-13 10:23:49,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:49,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105071781] [2020-10-13 10:23:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:49,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:50,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:50,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-13 10:23:50,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:50,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:23:50,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:51,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:51,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:51,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:51,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105071781] [2020-10-13 10:23:51,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:51,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:51,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815669187] [2020-10-13 10:23:51,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:51,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:51,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:51,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:51,134 INFO L87 Difference]: Start difference. First operand 487 states and 537 transitions. Second operand 17 states. [2020-10-13 10:23:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:52,410 INFO L93 Difference]: Finished difference Result 518 states and 570 transitions. [2020-10-13 10:23:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:23:52,411 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-13 10:23:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:52,414 INFO L225 Difference]: With dead ends: 518 [2020-10-13 10:23:52,414 INFO L226 Difference]: Without dead ends: 506 [2020-10-13 10:23:52,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:23:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-13 10:23:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 450. [2020-10-13 10:23:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-10-13 10:23:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 499 transitions. [2020-10-13 10:23:52,459 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 499 transitions. Word has length 49 [2020-10-13 10:23:52,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:52,459 INFO L479 AbstractCegarLoop]: Abstraction has 450 states and 499 transitions. [2020-10-13 10:23:52,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 499 transitions. [2020-10-13 10:23:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:52,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:52,461 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:52,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 10:23:52,461 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:52,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1125163038, now seen corresponding path program 9 times [2020-10-13 10:23:52,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:52,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614144580] [2020-10-13 10:23:52,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:52,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:53,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:53,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:53,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-13 10:23:53,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:23:53,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:54,041 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-13 10:23:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:54,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:54,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:54,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:54,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:54,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:54,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614144580] [2020-10-13 10:23:54,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:54,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:23:54,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303298063] [2020-10-13 10:23:54,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:23:54,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:54,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:23:54,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:54,505 INFO L87 Difference]: Start difference. First operand 450 states and 499 transitions. Second operand 19 states. [2020-10-13 10:23:56,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:56,906 INFO L93 Difference]: Finished difference Result 641 states and 706 transitions. [2020-10-13 10:23:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:23:56,906 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2020-10-13 10:23:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:56,908 INFO L225 Difference]: With dead ends: 641 [2020-10-13 10:23:56,909 INFO L226 Difference]: Without dead ends: 639 [2020-10-13 10:23:56,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:23:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-13 10:23:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 479. [2020-10-13 10:23:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-10-13 10:23:56,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 529 transitions. [2020-10-13 10:23:56,952 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 529 transitions. Word has length 49 [2020-10-13 10:23:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:56,952 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 529 transitions. [2020-10-13 10:23:56,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:23:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 529 transitions. [2020-10-13 10:23:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:56,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:56,954 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:56,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 10:23:56,954 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:56,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:56,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1984164896, now seen corresponding path program 10 times [2020-10-13 10:23:56,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:56,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119987308] [2020-10-13 10:23:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:57,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 774 [2020-10-13 10:23:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:57,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:57,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:58,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:58,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:58,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:58,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:58,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:58,284 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 10:23:58,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119987308] [2020-10-13 10:23:58,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:58,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:58,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824341428] [2020-10-13 10:23:58,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:58,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:58,285 INFO L87 Difference]: Start difference. First operand 479 states and 529 transitions. Second operand 17 states. [2020-10-13 10:23:59,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:59,754 INFO L93 Difference]: Finished difference Result 553 states and 604 transitions. [2020-10-13 10:23:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:23:59,754 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-13 10:23:59,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:59,756 INFO L225 Difference]: With dead ends: 553 [2020-10-13 10:23:59,757 INFO L226 Difference]: Without dead ends: 383 [2020-10-13 10:23:59,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:23:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-10-13 10:23:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2020-10-13 10:23:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-10-13 10:23:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 425 transitions. [2020-10-13 10:23:59,793 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 425 transitions. Word has length 49 [2020-10-13 10:23:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:59,793 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 425 transitions. [2020-10-13 10:23:59,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 425 transitions. [2020-10-13 10:23:59,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:23:59,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:59,794 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 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 10:23:59,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 10:23:59,794 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash -260416226, now seen corresponding path program 6 times [2020-10-13 10:23:59,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:59,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953091338] [2020-10-13 10:23:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:01,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1909 [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:24:01,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:02,180 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-13 10:24:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:02,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:02,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:02,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:02,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:02,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:02,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953091338] [2020-10-13 10:24:02,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:02,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:02,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277912924] [2020-10-13 10:24:02,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:02,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:02,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:02,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:02,613 INFO L87 Difference]: Start difference. First operand 383 states and 425 transitions. Second operand 19 states. [2020-10-13 10:24:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:04,469 INFO L93 Difference]: Finished difference Result 444 states and 487 transitions. [2020-10-13 10:24:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:24:04,470 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-13 10:24:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:04,472 INFO L225 Difference]: With dead ends: 444 [2020-10-13 10:24:04,473 INFO L226 Difference]: Without dead ends: 442 [2020-10-13 10:24:04,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-10-13 10:24:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 319. [2020-10-13 10:24:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 10:24:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 355 transitions. [2020-10-13 10:24:04,506 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 355 transitions. Word has length 50 [2020-10-13 10:24:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:04,506 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 355 transitions. [2020-10-13 10:24:04,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 355 transitions. [2020-10-13 10:24:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:24:04,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:04,507 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:04,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 10:24:04,508 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:04,508 INFO L82 PathProgramCache]: Analyzing trace with hash 133950560, now seen corresponding path program 7 times [2020-10-13 10:24:04,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:04,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519637215] [2020-10-13 10:24:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:05,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:05,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:24:05,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:05,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-13 10:24:05,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:24:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:06,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:06,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:06,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:06,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:06,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:24:06,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519637215] [2020-10-13 10:24:06,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:06,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:24:06,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641541290] [2020-10-13 10:24:06,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:24:06,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:06,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:24:06,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:24:06,313 INFO L87 Difference]: Start difference. First operand 319 states and 355 transitions. Second operand 17 states. [2020-10-13 10:24:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:07,634 INFO L93 Difference]: Finished difference Result 409 states and 455 transitions. [2020-10-13 10:24:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:24:07,634 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-13 10:24:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:07,637 INFO L225 Difference]: With dead ends: 409 [2020-10-13 10:24:07,637 INFO L226 Difference]: Without dead ends: 396 [2020-10-13 10:24:07,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:24:07,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-13 10:24:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 319. [2020-10-13 10:24:07,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 10:24:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 354 transitions. [2020-10-13 10:24:07,669 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 354 transitions. Word has length 50 [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 319 states and 354 transitions. [2020-10-13 10:24:07,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:24:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 354 transitions. [2020-10-13 10:24:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:07,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:07,671 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:07,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 10:24:07,671 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1803294986, now seen corresponding path program 5 times [2020-10-13 10:24:07,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:07,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705755968] [2020-10-13 10:24:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:08,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:08,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:08,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:08,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-13 10:24:08,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:08,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:24:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:09,052 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-13 10:24:09,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:09,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:09,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:09,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:09,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:24:09,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:09,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:09,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705755968] [2020-10-13 10:24:09,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:09,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:24:09,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16795111] [2020-10-13 10:24:09,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:24:09,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:09,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:24:09,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:24:09,518 INFO L87 Difference]: Start difference. First operand 319 states and 354 transitions. Second operand 20 states. [2020-10-13 10:24:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:11,798 INFO L93 Difference]: Finished difference Result 533 states and 594 transitions. [2020-10-13 10:24:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:11,798 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-13 10:24:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:11,801 INFO L225 Difference]: With dead ends: 533 [2020-10-13 10:24:11,801 INFO L226 Difference]: Without dead ends: 531 [2020-10-13 10:24:11,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 10:24:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-10-13 10:24:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 430. [2020-10-13 10:24:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 10:24:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 476 transitions. [2020-10-13 10:24:11,853 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 476 transitions. Word has length 52 [2020-10-13 10:24:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:11,853 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 476 transitions. [2020-10-13 10:24:11,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:24:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 476 transitions. [2020-10-13 10:24:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:11,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:11,855 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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 10:24:11,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 10:24:11,855 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:11,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:11,855 INFO L82 PathProgramCache]: Analyzing trace with hash -688208822, now seen corresponding path program 10 times [2020-10-13 10:24:11,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:11,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544708303] [2020-10-13 10:24:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:15,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:15,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:15,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:24:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3475 [2020-10-13 10:24:15,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:24:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:24:15,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:16,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:16,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:16,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:16,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544708303] [2020-10-13 10:24:16,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:16,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:16,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508529986] [2020-10-13 10:24:16,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:16,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:16,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:16,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:16,135 INFO L87 Difference]: Start difference. First operand 430 states and 476 transitions. Second operand 19 states. [2020-10-13 10:24:17,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:17,809 INFO L93 Difference]: Finished difference Result 495 states and 543 transitions. [2020-10-13 10:24:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:24:17,809 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:24:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:17,812 INFO L225 Difference]: With dead ends: 495 [2020-10-13 10:24:17,812 INFO L226 Difference]: Without dead ends: 483 [2020-10-13 10:24:17,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:24:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-10-13 10:24:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 324. [2020-10-13 10:24:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-10-13 10:24:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 364 transitions. [2020-10-13 10:24:17,847 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 364 transitions. Word has length 52 [2020-10-13 10:24:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:17,848 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 364 transitions. [2020-10-13 10:24:17,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 364 transitions. [2020-10-13 10:24:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:17,849 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:17,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 10:24:17,849 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:17,849 INFO L82 PathProgramCache]: Analyzing trace with hash -773935688, now seen corresponding path program 8 times [2020-10-13 10:24:17,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:17,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542526324] [2020-10-13 10:24:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:18,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:18,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:18,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-13 10:24:18,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:24:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:24:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:19,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:19,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:19,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:19,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:19,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:19,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:19,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:19,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:19,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542526324] [2020-10-13 10:24:19,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:19,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:19,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777630312] [2020-10-13 10:24:19,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:19,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:19,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:19,709 INFO L87 Difference]: Start difference. First operand 324 states and 364 transitions. Second operand 19 states. [2020-10-13 10:24:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:21,427 INFO L93 Difference]: Finished difference Result 601 states and 689 transitions. [2020-10-13 10:24:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:24:21,428 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:24:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:21,431 INFO L225 Difference]: With dead ends: 601 [2020-10-13 10:24:21,431 INFO L226 Difference]: Without dead ends: 588 [2020-10-13 10:24:21,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:24:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-10-13 10:24:21,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 435. [2020-10-13 10:24:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-13 10:24:21,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 485 transitions. [2020-10-13 10:24:21,472 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 485 transitions. Word has length 52 [2020-10-13 10:24:21,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:21,472 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 485 transitions. [2020-10-13 10:24:21,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 485 transitions. [2020-10-13 10:24:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:21,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:21,473 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:21,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 10:24:21,473 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:21,473 INFO L82 PathProgramCache]: Analyzing trace with hash 341150476, now seen corresponding path program 11 times [2020-10-13 10:24:21,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:21,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962265745] [2020-10-13 10:24:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:22,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:24:22,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:23,139 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-13 10:24:23,306 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-13 10:24:23,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:23,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:23,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:23,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:23,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:24:23,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:23,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:23,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:23,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:23,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962265745] [2020-10-13 10:24:23,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:23,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:23,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64386330] [2020-10-13 10:24:23,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:23,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:23,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:23,599 INFO L87 Difference]: Start difference. First operand 435 states and 485 transitions. Second operand 19 states. [2020-10-13 10:24:26,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:26,135 INFO L93 Difference]: Finished difference Result 871 states and 970 transitions. [2020-10-13 10:24:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:24:26,135 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:24:26,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:26,139 INFO L225 Difference]: With dead ends: 871 [2020-10-13 10:24:26,139 INFO L226 Difference]: Without dead ends: 869 [2020-10-13 10:24:26,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-10-13 10:24:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 547. [2020-10-13 10:24:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-10-13 10:24:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 608 transitions. [2020-10-13 10:24:26,193 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 608 transitions. Word has length 52 [2020-10-13 10:24:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:26,193 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 608 transitions. [2020-10-13 10:24:26,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 608 transitions. [2020-10-13 10:24:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:24:26,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:26,194 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:26,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 10:24:26,194 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:26,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1185155978, now seen corresponding path program 12 times [2020-10-13 10:24:26,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:26,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565114130] [2020-10-13 10:24:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:26,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:24:26,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:27,279 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-13 10:24:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:27,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:27,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:27,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:27,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:27,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:27,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565114130] [2020-10-13 10:24:27,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:27,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:27,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348145271] [2020-10-13 10:24:27,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:27,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:27,770 INFO L87 Difference]: Start difference. First operand 547 states and 608 transitions. Second operand 19 states. [2020-10-13 10:24:29,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:29,964 INFO L93 Difference]: Finished difference Result 791 states and 876 transitions. [2020-10-13 10:24:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:24:29,964 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:24:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:29,968 INFO L225 Difference]: With dead ends: 791 [2020-10-13 10:24:29,968 INFO L226 Difference]: Without dead ends: 779 [2020-10-13 10:24:29,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-10-13 10:24:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 616. [2020-10-13 10:24:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-13 10:24:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 680 transitions. [2020-10-13 10:24:30,027 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 680 transitions. Word has length 52 [2020-10-13 10:24:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:30,028 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 680 transitions. [2020-10-13 10:24:30,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:30,028 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 680 transitions. [2020-10-13 10:24:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:24:30,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:30,029 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:30,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 10:24:30,029 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:30,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:30,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1628237152, now seen corresponding path program 11 times [2020-10-13 10:24:30,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:30,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118848794] [2020-10-13 10:24:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:24:31,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:31,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1218 [2020-10-13 10:24:31,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:31,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:24:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:31,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:31,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 7 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:31,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118848794] [2020-10-13 10:24:31,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:31,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:24:31,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201879858] [2020-10-13 10:24:31,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:24:31,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:31,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:24:31,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:24:31,902 INFO L87 Difference]: Start difference. First operand 616 states and 680 transitions. Second operand 18 states. [2020-10-13 10:24:33,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:33,923 INFO L93 Difference]: Finished difference Result 741 states and 811 transitions. [2020-10-13 10:24:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:24:33,924 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-13 10:24:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:33,927 INFO L225 Difference]: With dead ends: 741 [2020-10-13 10:24:33,927 INFO L226 Difference]: Without dead ends: 626 [2020-10-13 10:24:33,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:24:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2020-10-13 10:24:34,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2020-10-13 10:24:34,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-13 10:24:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-13 10:24:34,001 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 54 [2020-10-13 10:24:34,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:34,002 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-13 10:24:34,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:24:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-13 10:24:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:34,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:34,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:34,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 10:24:34,003 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:34,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1325200268, now seen corresponding path program 9 times [2020-10-13 10:24:34,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:34,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644423990] [2020-10-13 10:24:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:35,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:35,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-13 10:24:35,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:35,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:35,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:24:35,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:35,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:35,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:35,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644423990] [2020-10-13 10:24:35,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:35,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:24:35,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090081614] [2020-10-13 10:24:35,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:24:35,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:35,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:24:35,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:24:35,862 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-13 10:24:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:38,982 INFO L93 Difference]: Finished difference Result 716 states and 783 transitions. [2020-10-13 10:24:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 10:24:38,983 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-13 10:24:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:38,987 INFO L225 Difference]: With dead ends: 716 [2020-10-13 10:24:38,987 INFO L226 Difference]: Without dead ends: 714 [2020-10-13 10:24:38,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=1156, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:24:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-13 10:24:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 692. [2020-10-13 10:24:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-13 10:24:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 757 transitions. [2020-10-13 10:24:39,054 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 757 transitions. Word has length 55 [2020-10-13 10:24:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:39,054 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 757 transitions. [2020-10-13 10:24:39,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:24:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 757 transitions. [2020-10-13 10:24:39,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:39,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:39,056 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:39,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 10:24:39,056 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:39,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:39,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1854680864, now seen corresponding path program 13 times [2020-10-13 10:24:39,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:39,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096806934] [2020-10-13 10:24:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:39,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:41,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:41,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1898 [2020-10-13 10:24:41,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:24:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:41,371 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-13 10:24:41,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:41,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:41,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096806934] [2020-10-13 10:24:41,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:41,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:41,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162401805] [2020-10-13 10:24:41,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:41,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:41,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:41,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:41,828 INFO L87 Difference]: Start difference. First operand 692 states and 757 transitions. Second operand 19 states. [2020-10-13 10:24:42,859 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2020-10-13 10:24:43,164 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-13 10:24:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:44,793 INFO L93 Difference]: Finished difference Result 759 states and 839 transitions. [2020-10-13 10:24:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:44,794 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-13 10:24:44,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:44,797 INFO L225 Difference]: With dead ends: 759 [2020-10-13 10:24:44,798 INFO L226 Difference]: Without dead ends: 747 [2020-10-13 10:24:44,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:44,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2020-10-13 10:24:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 626. [2020-10-13 10:24:44,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-13 10:24:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-13 10:24:44,869 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 55 [2020-10-13 10:24:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:44,870 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-13 10:24:44,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-13 10:24:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:44,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:44,871 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:44,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 10:24:44,871 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1925750604, now seen corresponding path program 10 times [2020-10-13 10:24:44,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:44,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986368569] [2020-10-13 10:24:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:46,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:46,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-13 10:24:46,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:46,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:46,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:24:46,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:46,549 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-13 10:24:46,756 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-13 10:24:46,894 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-13 10:24:47,063 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-13 10:24:47,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:47,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:47,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:47,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:47,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:47,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:47,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:47,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986368569] [2020-10-13 10:24:47,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:47,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:24:47,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48090349] [2020-10-13 10:24:47,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:24:47,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:47,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:24:47,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:24:47,448 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-13 10:24:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:49,708 INFO L93 Difference]: Finished difference Result 763 states and 829 transitions. [2020-10-13 10:24:49,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:24:49,708 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-13 10:24:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:49,712 INFO L225 Difference]: With dead ends: 763 [2020-10-13 10:24:49,712 INFO L226 Difference]: Without dead ends: 750 [2020-10-13 10:24:49,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-13 10:24:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 559. [2020-10-13 10:24:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-13 10:24:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 622 transitions. [2020-10-13 10:24:49,786 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 622 transitions. Word has length 55 [2020-10-13 10:24:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:49,786 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 622 transitions. [2020-10-13 10:24:49,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:24:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 622 transitions. [2020-10-13 10:24:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:49,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:49,787 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:49,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 10:24:49,787 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1254130528, now seen corresponding path program 14 times [2020-10-13 10:24:49,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:49,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115475992] [2020-10-13 10:24:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:51,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:24:51,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:52,113 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-13 10:24:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:52,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:52,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:52,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115475992] [2020-10-13 10:24:52,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:52,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:24:52,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969903873] [2020-10-13 10:24:52,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:24:52,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:52,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:24:52,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:24:52,661 INFO L87 Difference]: Start difference. First operand 559 states and 622 transitions. Second operand 21 states. [2020-10-13 10:24:56,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:56,167 INFO L93 Difference]: Finished difference Result 819 states and 911 transitions. [2020-10-13 10:24:56,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:24:56,167 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-13 10:24:56,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:56,171 INFO L225 Difference]: With dead ends: 819 [2020-10-13 10:24:56,171 INFO L226 Difference]: Without dead ends: 817 [2020-10-13 10:24:56,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 10:24:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2020-10-13 10:24:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 671. [2020-10-13 10:24:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-13 10:24:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 735 transitions. [2020-10-13 10:24:56,247 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 735 transitions. Word has length 55 [2020-10-13 10:24:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:56,248 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 735 transitions. [2020-10-13 10:24:56,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:24:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 735 transitions. [2020-10-13 10:24:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:56,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:56,249 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:56,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 10:24:56,249 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash -825321566, now seen corresponding path program 15 times [2020-10-13 10:24:56,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:56,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664463149] [2020-10-13 10:24:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:56,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:57,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:57,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1455 [2020-10-13 10:24:57,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:57,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 10:24:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:58,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:58,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:58,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:58,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:58,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:58,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664463149] [2020-10-13 10:24:58,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:58,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:58,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455996939] [2020-10-13 10:24:58,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:58,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:58,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:58,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:58,394 INFO L87 Difference]: Start difference. First operand 671 states and 735 transitions. Second operand 19 states. [2020-10-13 10:25:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:00,737 INFO L93 Difference]: Finished difference Result 685 states and 750 transitions. [2020-10-13 10:25:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:25:00,738 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-13 10:25:00,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:00,740 INFO L225 Difference]: With dead ends: 685 [2020-10-13 10:25:00,740 INFO L226 Difference]: Without dead ends: 512 [2020-10-13 10:25:00,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:25:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-13 10:25:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-10-13 10:25:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-13 10:25:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 568 transitions. [2020-10-13 10:25:00,815 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 568 transitions. Word has length 55 [2020-10-13 10:25:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:00,815 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 568 transitions. [2020-10-13 10:25:00,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:25:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 568 transitions. [2020-10-13 10:25:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:25:00,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:00,816 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-10-13 10:25:00,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 10:25:00,816 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:00,816 INFO L82 PathProgramCache]: Analyzing trace with hash -915543304, now seen corresponding path program 12 times [2020-10-13 10:25:00,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:00,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657671995] [2020-10-13 10:25:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:02,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:02,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:25:02,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-13 10:25:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:25:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 10:25:02,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:02,554 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2020-10-13 10:25:02,790 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2020-10-13 10:25:03,066 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-13 10:25:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:03,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:03,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657671995] [2020-10-13 10:25:03,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:03,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:03,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892143377] [2020-10-13 10:25:03,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:03,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:03,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:03,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:03,469 INFO L87 Difference]: Start difference. First operand 512 states and 568 transitions. Second operand 21 states. [2020-10-13 10:25:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:06,986 INFO L93 Difference]: Finished difference Result 1265 states and 1392 transitions. [2020-10-13 10:25:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:25:06,986 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-13 10:25:06,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:06,992 INFO L225 Difference]: With dead ends: 1265 [2020-10-13 10:25:06,992 INFO L226 Difference]: Without dead ends: 1263 [2020-10-13 10:25:06,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 10:25:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-10-13 10:25:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 769. [2020-10-13 10:25:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-13 10:25:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 852 transitions. [2020-10-13 10:25:07,083 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 852 transitions. Word has length 57 [2020-10-13 10:25:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:07,084 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 852 transitions. [2020-10-13 10:25:07,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 852 transitions. [2020-10-13 10:25:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:25:07,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:07,085 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:07,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 10:25:07,085 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 456263994, now seen corresponding path program 16 times [2020-10-13 10:25:07,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:07,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012779448] [2020-10-13 10:25:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:07,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:08,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:25:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:08,671 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-13 10:25:08,828 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-13 10:25:09,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:09,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:09,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:09,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:09,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:09,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:09,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:09,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:09,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:09,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:09,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012779448] [2020-10-13 10:25:09,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:09,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:09,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115890711] [2020-10-13 10:25:09,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:09,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:09,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:09,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:09,478 INFO L87 Difference]: Start difference. First operand 769 states and 852 transitions. Second operand 21 states. [2020-10-13 10:25:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:12,589 INFO L93 Difference]: Finished difference Result 1199 states and 1312 transitions. [2020-10-13 10:25:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:25:12,590 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-13 10:25:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:12,595 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 10:25:12,596 INFO L226 Difference]: Without dead ends: 1187 [2020-10-13 10:25:12,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 10:25:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-13 10:25:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1058. [2020-10-13 10:25:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-13 10:25:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1155 transitions. [2020-10-13 10:25:12,709 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1155 transitions. Word has length 57 [2020-10-13 10:25:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:12,709 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1155 transitions. [2020-10-13 10:25:12,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1155 transitions. [2020-10-13 10:25:12,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:25:12,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:12,711 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:12,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-13 10:25:12,711 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:12,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:12,711 INFO L82 PathProgramCache]: Analyzing trace with hash 121940344, now seen corresponding path program 11 times [2020-10-13 10:25:12,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:12,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358679332] [2020-10-13 10:25:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:14,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 10:25:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:15,011 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-13 10:25:15,177 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-13 10:25:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:15,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:15,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:15,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358679332] [2020-10-13 10:25:15,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:15,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:25:15,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770394056] [2020-10-13 10:25:15,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:25:15,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:15,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:25:15,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:25:15,678 INFO L87 Difference]: Start difference. First operand 1058 states and 1155 transitions. Second operand 22 states. [2020-10-13 10:25:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:18,682 INFO L93 Difference]: Finished difference Result 1334 states and 1450 transitions. [2020-10-13 10:25:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:25:18,683 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-13 10:25:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:18,687 INFO L225 Difference]: With dead ends: 1334 [2020-10-13 10:25:18,688 INFO L226 Difference]: Without dead ends: 1332 [2020-10-13 10:25:18,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 10:25:18,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-10-13 10:25:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1241. [2020-10-13 10:25:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-10-13 10:25:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1355 transitions. [2020-10-13 10:25:18,817 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1355 transitions. Word has length 58 [2020-10-13 10:25:18,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:18,817 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1355 transitions. [2020-10-13 10:25:18,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:25:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1355 transitions. [2020-10-13 10:25:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:25:18,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:18,819 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:18,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-13 10:25:18,819 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:18,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:18,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1237026508, now seen corresponding path program 17 times [2020-10-13 10:25:18,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:18,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628814248] [2020-10-13 10:25:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:19,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:23,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:23,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:25:23,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:25:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 10:25:23,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:25:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,614 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-13 10:25:25,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:25,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:25,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:25,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628814248] [2020-10-13 10:25:25,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:25,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:25,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299637601] [2020-10-13 10:25:25,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:25,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:25,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:25,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:25,251 INFO L87 Difference]: Start difference. First operand 1241 states and 1355 transitions. Second operand 21 states. [2020-10-13 10:25:27,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:27,597 INFO L93 Difference]: Finished difference Result 1335 states and 1451 transitions. [2020-10-13 10:25:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:25:27,598 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-13 10:25:27,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:27,603 INFO L225 Difference]: With dead ends: 1335 [2020-10-13 10:25:27,603 INFO L226 Difference]: Without dead ends: 1323 [2020-10-13 10:25:27,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:25:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-13 10:25:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1066. [2020-10-13 10:25:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-13 10:25:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1171 transitions. [2020-10-13 10:25:27,717 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1171 transitions. Word has length 58 [2020-10-13 10:25:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:27,718 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1171 transitions. [2020-10-13 10:25:27,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1171 transitions. [2020-10-13 10:25:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:25:27,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:27,720 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:27,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-13 10:25:27,720 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:27,720 INFO L82 PathProgramCache]: Analyzing trace with hash -301706378, now seen corresponding path program 12 times [2020-10-13 10:25:27,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:27,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79351333] [2020-10-13 10:25:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:29,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:29,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:25:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1256 [2020-10-13 10:25:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:25:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:29,716 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-10-13 10:25:29,874 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-13 10:25:30,031 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-13 10:25:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:30,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79351333] [2020-10-13 10:25:30,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:30,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:30,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815678908] [2020-10-13 10:25:30,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:30,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:30,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:30,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:30,472 INFO L87 Difference]: Start difference. First operand 1066 states and 1171 transitions. Second operand 21 states. [2020-10-13 10:25:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:33,150 INFO L93 Difference]: Finished difference Result 1150 states and 1271 transitions. [2020-10-13 10:25:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:25:33,151 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-13 10:25:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:33,155 INFO L225 Difference]: With dead ends: 1150 [2020-10-13 10:25:33,155 INFO L226 Difference]: Without dead ends: 1137 [2020-10-13 10:25:33,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=109, Invalid=1151, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:25:33,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-10-13 10:25:33,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1000. [2020-10-13 10:25:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-13 10:25:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1103 transitions. [2020-10-13 10:25:33,269 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1103 transitions. Word has length 58 [2020-10-13 10:25:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:33,269 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1103 transitions. [2020-10-13 10:25:33,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1103 transitions. [2020-10-13 10:25:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:25:33,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:33,271 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:33,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-13 10:25:33,271 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:33,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1904247776, now seen corresponding path program 6 times [2020-10-13 10:25:33,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:33,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980235723] [2020-10-13 10:25:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:34,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:34,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:34,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:34,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-13 10:25:34,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:25:34,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:35,230 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2020-10-13 10:25:35,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:35,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:35,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:35,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:35,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:35,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980235723] [2020-10-13 10:25:35,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:35,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:25:35,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707133289] [2020-10-13 10:25:35,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:25:35,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:35,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:25:35,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:25:35,873 INFO L87 Difference]: Start difference. First operand 1000 states and 1103 transitions. Second operand 22 states. [2020-10-13 10:25:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:39,938 INFO L93 Difference]: Finished difference Result 1378 states and 1513 transitions. [2020-10-13 10:25:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 10:25:39,939 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-10-13 10:25:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:39,945 INFO L225 Difference]: With dead ends: 1378 [2020-10-13 10:25:39,945 INFO L226 Difference]: Without dead ends: 1376 [2020-10-13 10:25:39,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=117, Invalid=1443, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:25:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-10-13 10:25:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1111. [2020-10-13 10:25:40,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-13 10:25:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1215 transitions. [2020-10-13 10:25:40,070 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1215 transitions. Word has length 60 [2020-10-13 10:25:40,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:40,070 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1215 transitions. [2020-10-13 10:25:40,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:25:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1215 transitions. [2020-10-13 10:25:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:25:40,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:40,072 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:40,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-13 10:25:40,072 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:40,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:40,072 INFO L82 PathProgramCache]: Analyzing trace with hash -789161612, now seen corresponding path program 13 times [2020-10-13 10:25:40,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:40,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712378042] [2020-10-13 10:25:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:42,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:42,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:42,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2750 [2020-10-13 10:25:42,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:25:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:42,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:25:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:43,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:43,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:43,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:43,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:43,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:43,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712378042] [2020-10-13 10:25:43,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:43,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:43,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724475322] [2020-10-13 10:25:43,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:43,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:43,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:43,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:43,901 INFO L87 Difference]: Start difference. First operand 1111 states and 1215 transitions. Second operand 21 states. [2020-10-13 10:25:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:46,639 INFO L93 Difference]: Finished difference Result 1163 states and 1277 transitions. [2020-10-13 10:25:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:25:46,640 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 60 [2020-10-13 10:25:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:46,646 INFO L225 Difference]: With dead ends: 1163 [2020-10-13 10:25:46,646 INFO L226 Difference]: Without dead ends: 1151 [2020-10-13 10:25:46,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:25:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2020-10-13 10:25:46,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1000. [2020-10-13 10:25:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-13 10:25:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1103 transitions. [2020-10-13 10:25:46,764 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1103 transitions. Word has length 60 [2020-10-13 10:25:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:46,764 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1103 transitions. [2020-10-13 10:25:46,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1103 transitions. [2020-10-13 10:25:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:25:46,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:46,766 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:46,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-13 10:25:46,766 INFO L427 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash 923538336, now seen corresponding path program 14 times [2020-10-13 10:25:46,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:46,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183723398] [2020-10-13 10:25:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:48,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:48,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:48,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1987 [2020-10-13 10:25:48,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:25:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:25:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,398 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-13 10:25:49,574 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-13 10:25:49,769 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-13 10:25:50,043 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-13 10:25:50,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:50,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:50,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:50,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:50,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:50,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:50,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:50,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183723398] [2020-10-13 10:25:50,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:50,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:25:50,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92396724] [2020-10-13 10:25:50,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:25:50,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:50,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:25:50,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:25:50,533 INFO L87 Difference]: Start difference. First operand 1000 states and 1103 transitions. Second operand 23 states. [2020-10-13 10:25:54,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:55,000 INFO L93 Difference]: Finished difference Result 1485 states and 1641 transitions. [2020-10-13 10:25:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 10:25:55,000 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2020-10-13 10:25:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:55,006 INFO L225 Difference]: With dead ends: 1485 [2020-10-13 10:25:55,006 INFO L226 Difference]: Without dead ends: 1483 [2020-10-13 10:25:55,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=122, Invalid=1518, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 10:25:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2020-10-13 10:25:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1074. [2020-10-13 10:25:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-13 10:25:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1178 transitions. [2020-10-13 10:25:55,153 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1178 transitions. Word has length 60 [2020-10-13 10:25:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:55,154 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1178 transitions. [2020-10-13 10:25:55,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:25:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1178 transitions. [2020-10-13 10:25:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:25:55,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:55,155 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:55,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-13 10:25:55,155 INFO L427 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:55,156 INFO L82 PathProgramCache]: Analyzing trace with hash 108231666, now seen corresponding path program 18 times [2020-10-13 10:25:55,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:55,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799048109] [2020-10-13 10:25:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:57,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:57,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:57,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2482 [2020-10-13 10:25:57,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:25:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 10:25:57,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:58,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:58,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:58,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:58,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:58,718 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 10:25:58,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799048109] [2020-10-13 10:25:58,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:58,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:58,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438043739] [2020-10-13 10:25:58,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:58,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:58,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:58,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:58,719 INFO L87 Difference]: Start difference. First operand 1074 states and 1178 transitions. Second operand 21 states. [2020-10-13 10:26:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:02,019 INFO L93 Difference]: Finished difference Result 1268 states and 1381 transitions. [2020-10-13 10:26:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:26:02,020 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 60 [2020-10-13 10:26:02,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:02,022 INFO L225 Difference]: With dead ends: 1268 [2020-10-13 10:26:02,023 INFO L226 Difference]: Without dead ends: 827 [2020-10-13 10:26:02,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=106, Invalid=1226, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 10:26:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states.