/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-cnstr_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:47,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:47,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:47,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:47,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:47,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:47,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:47,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:47,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:47,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:47,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:47,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:47,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:47,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:47,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:47,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:47,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:47,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:47,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:47,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:47,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:47,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:47,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:47,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:47,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:47,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:47,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:47,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:47,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:47,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:47,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:47,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:47,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:47,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:47,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:47,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:47,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:47,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:47,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:47,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:47,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:47,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:21:47,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:47,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:47,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:47,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:47,981 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:47,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:47,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:47,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:47,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:47,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:47,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:47,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:47,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:47,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:47,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:47,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:47,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:47,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:47,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:47,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:47,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:47,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:47,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:47,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:47,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:47,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:47,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:47,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:47,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:47,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:21:48,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:48,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:48,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:48,310 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:48,311 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:48,312 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2020-10-13 10:21:48,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b1b0fca/c301bc110b8e4f30af465f726ddcca67/FLAGd89f221bb [2020-10-13 10:21:48,843 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:48,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2020-10-13 10:21:48,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b1b0fca/c301bc110b8e4f30af465f726ddcca67/FLAGd89f221bb [2020-10-13 10:21:49,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b1b0fca/c301bc110b8e4f30af465f726ddcca67 [2020-10-13 10:21:49,179 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:49,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:49,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:49,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:49,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:49,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3451cfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49, skipping insertion in model container [2020-10-13 10:21:49,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:49,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:49,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:49,805 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:49,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:49,933 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:49,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49 WrapperNode [2020-10-13 10:21:49,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:49,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:49,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:49,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:49,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:49,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... [2020-10-13 10:21:50,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:50,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:50,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:50,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:50,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:50,088 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:50,114 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:50,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:21:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:21:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:50,748 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:50,749 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-13 10:21:50,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:50 BoogieIcfgContainer [2020-10-13 10:21:50,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:50,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:50,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:50,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:50,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:49" (1/3) ... [2020-10-13 10:21:50,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e989a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:50, skipping insertion in model container [2020-10-13 10:21:50,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:49" (2/3) ... [2020-10-13 10:21:50,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e989a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:50, skipping insertion in model container [2020-10-13 10:21:50,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:50" (3/3) ... [2020-10-13 10:21:50,763 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2020-10-13 10:21:50,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:50,784 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-13 10:21:50,801 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-13 10:21:50,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:50,838 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:50,838 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:50,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:50,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:50,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:50,840 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:50,840 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-13 10:21:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:21:50,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:50,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:50,886 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:50,902 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-10-13 10:21:50,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:50,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568599561] [2020-10-13 10:21:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:21:51,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:51,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-13 10:21:51,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:51,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:51,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:21:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:51,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:21:51,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:51,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568599561] [2020-10-13 10:21:51,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:51,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:21:51,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185214248] [2020-10-13 10:21:51,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:21:51,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:51,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:21:51,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:51,511 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-13 10:21:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:51,634 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2020-10-13 10:21:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:21:51,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-13 10:21:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:51,647 INFO L225 Difference]: With dead ends: 67 [2020-10-13 10:21:51,647 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 10:21:51,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 10:21:51,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 10:21:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 10:21:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-13 10:21:51,695 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10 [2020-10-13 10:21:51,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:51,696 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-13 10:21:51,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:21:51,696 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-13 10:21:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:21:51,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:51,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:51,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:51,698 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:51,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:51,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1556669446, now seen corresponding path program 1 times [2020-10-13 10:21:51,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:51,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984405586] [2020-10-13 10:21:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:21:51,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-13 10:21:51,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:51,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:51,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:51,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:21:51,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:51,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:51,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984405586] [2020-10-13 10:21:51,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:51,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:51,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159841432] [2020-10-13 10:21:51,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:51,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:51,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:51,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:51,897 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-10-13 10:21:52,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:52,028 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-13 10:21:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:52,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-13 10:21:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:52,030 INFO L225 Difference]: With dead ends: 34 [2020-10-13 10:21:52,030 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 10:21:52,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:52,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 10:21:52,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-13 10:21:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 10:21:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-13 10:21:52,038 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2020-10-13 10:21:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:52,038 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-13 10:21:52,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-13 10:21:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:52,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:52,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:52,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:52,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:52,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:52,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-10-13 10:21:52,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:52,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296009802] [2020-10-13 10:21:52,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 10:21:52,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:21:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:52,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:52,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:52,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:52,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:52,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296009802] [2020-10-13 10:21:52,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:52,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:52,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318432779] [2020-10-13 10:21:52,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:52,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:52,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:52,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:52,182 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-13 10:21:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:52,332 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-13 10:21:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:52,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-13 10:21:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:52,334 INFO L225 Difference]: With dead ends: 54 [2020-10-13 10:21:52,334 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:21:52,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:21:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-10-13 10:21:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-13 10:21:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-13 10:21:52,343 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-10-13 10:21:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:52,344 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-13 10:21:52,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-13 10:21:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:21:52,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:52,345 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:52,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:52,346 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:52,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:52,346 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-10-13 10:21:52,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:52,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892258110] [2020-10-13 10:21:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:21:52,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-13 10:21:52,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:52,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:52,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:52,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:52,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892258110] [2020-10-13 10:21:52,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:52,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:52,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969038205] [2020-10-13 10:21:52,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:52,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:52,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:52,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:52,881 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-10-13 10:21:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:53,138 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-13 10:21:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:53,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-13 10:21:53,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:53,139 INFO L225 Difference]: With dead ends: 39 [2020-10-13 10:21:53,139 INFO L226 Difference]: Without dead ends: 37 [2020-10-13 10:21:53,142 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 10:21:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-13 10:21:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-13 10:21:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 10:21:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-13 10:21:53,150 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-13 10:21:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:53,150 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-13 10:21:53,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:53,151 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-13 10:21:53,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-13 10:21:53,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:53,154 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 10:21:53,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:53,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:53,155 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-10-13 10:21:53,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:53,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477505013] [2020-10-13 10:21:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:21:53,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 10:21:53,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:53,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:53,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:53,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:53,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:53,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:53,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477505013] [2020-10-13 10:21:53,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:53,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:53,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807836445] [2020-10-13 10:21:53,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:53,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:53,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:53,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:53,450 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-10-13 10:21:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:53,577 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 10:21:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:53,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-13 10:21:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:53,578 INFO L225 Difference]: With dead ends: 42 [2020-10-13 10:21:53,579 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 10:21:53,579 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 10:21:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 10:21:53,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 10:21:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 10:21:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-13 10:21:53,585 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-10-13 10:21:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:53,585 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-13 10:21:53,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:53,586 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-13 10:21:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:21:53,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:53,587 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 10:21:53,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:53,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:53,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:53,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-10-13 10:21:53,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:53,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658658158] [2020-10-13 10:21:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:21:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 10:21:53,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:53,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:53,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:53,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:53,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:53,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:53,767 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 10:21:53,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658658158] [2020-10-13 10:21:53,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:53,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:21:53,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870849402] [2020-10-13 10:21:53,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:53,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:53,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:53,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:53,770 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-13 10:21:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:53,940 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-13 10:21:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:53,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 10:21:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:53,942 INFO L225 Difference]: With dead ends: 53 [2020-10-13 10:21:53,942 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 10:21:53,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 10:21:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 10:21:53,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 10:21:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-13 10:21:53,948 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-10-13 10:21:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:53,948 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-13 10:21:53,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-13 10:21:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:53,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:53,950 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 10:21:53,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:53,950 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:53,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-10-13 10:21:53,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:53,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911873429] [2020-10-13 10:21:53,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:54,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-13 10:21:54,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:54,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:54,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:21:54,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:54,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:54,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:54,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911873429] [2020-10-13 10:21:54,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:54,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:54,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404658091] [2020-10-13 10:21:54,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:54,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:54,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:54,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:54,303 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-10-13 10:21:54,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:54,740 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-10-13 10:21:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:54,740 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-13 10:21:54,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:54,743 INFO L225 Difference]: With dead ends: 85 [2020-10-13 10:21:54,744 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 10:21:54,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:21:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 10:21:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 46. [2020-10-13 10:21:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 10:21:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-13 10:21:54,753 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2020-10-13 10:21:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:54,753 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-13 10:21:54,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-13 10:21:54,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:54,754 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 10:21:54,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:54,755 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-10-13 10:21:54,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:54,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136868656] [2020-10-13 10:21:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:54,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 10:21:54,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:54,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:21:54,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:55,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:55,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:55,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:55,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136868656] [2020-10-13 10:21:55,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:55,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:55,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639627685] [2020-10-13 10:21:55,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:55,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:55,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:55,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:55,158 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 9 states. [2020-10-13 10:21:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:55,515 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-13 10:21:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:55,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-13 10:21:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:55,517 INFO L225 Difference]: With dead ends: 84 [2020-10-13 10:21:55,517 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 10:21:55,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 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 10:21:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 10:21:55,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-13 10:21:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 10:21:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-13 10:21:55,526 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2020-10-13 10:21:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:55,526 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-13 10:21:55,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-13 10:21:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:21:55,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:55,528 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 10:21:55,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:55,528 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-10-13 10:21:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:55,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927796811] [2020-10-13 10:21:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:21:55,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:55,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 10:21:55,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:55,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:56,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:56,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927796811] [2020-10-13 10:21:56,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:56,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:56,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551806385] [2020-10-13 10:21:56,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:56,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:56,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:56,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:56,033 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2020-10-13 10:21:56,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:56,509 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-10-13 10:21:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:56,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-13 10:21:56,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:56,511 INFO L225 Difference]: With dead ends: 85 [2020-10-13 10:21:56,511 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 10:21:56,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 10:21:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-10-13 10:21:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:21:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-13 10:21:56,548 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 27 [2020-10-13 10:21:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:56,548 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-13 10:21:56,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-13 10:21:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:21:56,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:56,550 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 10:21:56,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:56,550 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1670120370, now seen corresponding path program 2 times [2020-10-13 10:21:56,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:56,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956512512] [2020-10-13 10:21:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:21:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-13 10:21:56,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:56,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:21:56,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:57,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:57,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:57,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:57,161 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 10:21:57,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956512512] [2020-10-13 10:21:57,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:57,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:57,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492844104] [2020-10-13 10:21:57,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:57,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:57,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:57,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:57,165 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 9 states. [2020-10-13 10:21:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:57,676 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-13 10:21:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:21:57,676 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-13 10:21:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:57,677 INFO L225 Difference]: With dead ends: 87 [2020-10-13 10:21:57,677 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:21:57,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:57,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:21:57,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2020-10-13 10:21:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:21:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-13 10:21:57,685 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 27 [2020-10-13 10:21:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:57,685 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-13 10:21:57,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-13 10:21:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:21:57,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:57,687 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 10:21:57,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:57,687 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:57,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:57,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1148340406, now seen corresponding path program 3 times [2020-10-13 10:21:57,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:57,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094629758] [2020-10-13 10:21:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:21:58,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-13 10:21:58,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:58,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:58,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:58,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:58,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:58,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:21:58,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:58,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:58,429 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 10:21:58,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094629758] [2020-10-13 10:21:58,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:58,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:58,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24379270] [2020-10-13 10:21:58,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:58,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:58,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:58,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:58,434 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 11 states. [2020-10-13 10:21:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:59,164 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-10-13 10:21:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:21:59,165 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-13 10:21:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:59,166 INFO L225 Difference]: With dead ends: 91 [2020-10-13 10:21:59,166 INFO L226 Difference]: Without dead ends: 89 [2020-10-13 10:21:59,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:21:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-13 10:21:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2020-10-13 10:21:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 10:21:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-13 10:21:59,184 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 27 [2020-10-13 10:21:59,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:59,186 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-13 10:21:59,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-13 10:21:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:21:59,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:59,191 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 10:21:59,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:59,194 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash 18823372, now seen corresponding path program 2 times [2020-10-13 10:21:59,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:59,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307244623] [2020-10-13 10:21:59,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:21:59,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:59,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-13 10:21:59,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:59,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:21:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:59,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:59,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:59,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:59,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:21:59,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:59,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:59,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:59,507 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 10:21:59,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307244623] [2020-10-13 10:21:59,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:59,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:59,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286896440] [2020-10-13 10:21:59,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:59,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:59,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:59,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:59,510 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 9 states. [2020-10-13 10:21:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:59,834 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-13 10:21:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:59,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-13 10:21:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:59,836 INFO L225 Difference]: With dead ends: 80 [2020-10-13 10:21:59,836 INFO L226 Difference]: Without dead ends: 55 [2020-10-13 10:21:59,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-13 10:21:59,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-13 10:21:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 10:21:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-13 10:21:59,846 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 27 [2020-10-13 10:21:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:59,847 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-13 10:21:59,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-13 10:21:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:21:59,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:59,849 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 10:21:59,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:59,850 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:59,850 INFO L82 PathProgramCache]: Analyzing trace with hash 798514594, now seen corresponding path program 2 times [2020-10-13 10:21:59,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:59,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794780947] [2020-10-13 10:21:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:00,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:00,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:00,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-13 10:22:00,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:00,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:22:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:00,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:00,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:00,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:00,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:00,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:00,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:00,814 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 10:22:00,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794780947] [2020-10-13 10:22:00,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:00,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:00,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135093799] [2020-10-13 10:22:00,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:00,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:00,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:00,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:00,818 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 12 states. [2020-10-13 10:22:01,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:01,588 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2020-10-13 10:22:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:01,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-13 10:22:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:01,590 INFO L225 Difference]: With dead ends: 99 [2020-10-13 10:22:01,591 INFO L226 Difference]: Without dead ends: 97 [2020-10-13 10:22:01,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-13 10:22:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 69. [2020-10-13 10:22:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 10:22:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-13 10:22:01,616 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 30 [2020-10-13 10:22:01,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:01,617 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-13 10:22:01,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:01,617 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-13 10:22:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:01,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:01,618 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 10:22:01,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:22:01,618 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1913600758, now seen corresponding path program 4 times [2020-10-13 10:22:01,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:01,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474386213] [2020-10-13 10:22:01,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:03,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:03,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:03,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2008 [2020-10-13 10:22:03,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:03,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:22:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:04,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:04,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:04,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:04,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:04,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:04,030 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 10:22:04,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474386213] [2020-10-13 10:22:04,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:04,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:04,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835428562] [2020-10-13 10:22:04,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:04,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:04,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:04,033 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 11 states. [2020-10-13 10:22:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:04,632 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-10-13 10:22:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:04,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:04,633 INFO L225 Difference]: With dead ends: 117 [2020-10-13 10:22:04,633 INFO L226 Difference]: Without dead ends: 105 [2020-10-13 10:22:04,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-13 10:22:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72. [2020-10-13 10:22:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:22:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-13 10:22:04,640 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 30 [2020-10-13 10:22:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:04,640 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-13 10:22:04,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:04,641 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-13 10:22:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:04,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:04,641 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 10:22:04,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:22:04,642 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:04,642 INFO L82 PathProgramCache]: Analyzing trace with hash 579659876, now seen corresponding path program 1 times [2020-10-13 10:22:04,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:04,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40073423] [2020-10-13 10:22:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:04,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:04,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-13 10:22:04,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:22:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:05,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:05,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:05,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:05,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:05,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:05,360 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 10:22:05,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40073423] [2020-10-13 10:22:05,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:05,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:05,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440894782] [2020-10-13 10:22:05,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:05,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:05,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:05,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:05,364 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 11 states. [2020-10-13 10:22:06,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:06,300 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-10-13 10:22:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:06,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:06,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:06,302 INFO L225 Difference]: With dead ends: 116 [2020-10-13 10:22:06,302 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 10:22:06,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 10:22:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2020-10-13 10:22:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:22:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-10-13 10:22:06,310 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 30 [2020-10-13 10:22:06,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:06,311 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-10-13 10:22:06,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:06,311 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-10-13 10:22:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:06,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:06,312 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 10:22:06,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:22:06,312 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:06,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1694746040, now seen corresponding path program 1 times [2020-10-13 10:22:06,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:06,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619205305] [2020-10-13 10:22:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:06,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:06,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-13 10:22:06,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:06,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:06,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:22:06,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:06,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:06,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:06,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:06,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:06,977 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 10:22:06,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619205305] [2020-10-13 10:22:06,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:06,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:06,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291143436] [2020-10-13 10:22:06,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:06,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:06,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:06,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:06,984 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 11 states. [2020-10-13 10:22:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:07,745 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-10-13 10:22:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:07,745 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:07,746 INFO L225 Difference]: With dead ends: 148 [2020-10-13 10:22:07,746 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 10:22:07,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 10:22:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 97. [2020-10-13 10:22:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 10:22:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-10-13 10:22:07,760 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 30 [2020-10-13 10:22:07,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:07,761 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-10-13 10:22:07,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-10-13 10:22:07,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 10:22:07,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:07,762 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 10:22:07,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:22:07,763 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:07,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:07,763 INFO L82 PathProgramCache]: Analyzing trace with hash -911277514, now seen corresponding path program 3 times [2020-10-13 10:22:07,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:07,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49026340] [2020-10-13 10:22:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:22:08,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-13 10:22:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:08,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:22:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:08,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:08,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:08,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:08,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:08,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:08,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:08,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:08,234 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 10:22:08,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49026340] [2020-10-13 10:22:08,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:08,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:08,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125316944] [2020-10-13 10:22:08,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:08,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:08,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:08,242 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 11 states. [2020-10-13 10:22:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:08,781 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-10-13 10:22:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:08,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-13 10:22:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:08,782 INFO L225 Difference]: With dead ends: 141 [2020-10-13 10:22:08,783 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 10:22:08,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 10:22:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2020-10-13 10:22:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:22:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2020-10-13 10:22:08,793 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 30 [2020-10-13 10:22:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:08,794 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2020-10-13 10:22:08,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2020-10-13 10:22:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:22:08,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:08,795 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 10:22:08,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:22:08,795 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:08,795 INFO L82 PathProgramCache]: Analyzing trace with hash 499848564, now seen corresponding path program 1 times [2020-10-13 10:22:08,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:08,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114155275] [2020-10-13 10:22:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:08,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:22:08,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:08,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 10:22:08,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:22:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:08,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 10:22:08,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:09,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:09,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:09,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,171 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 10:22:09,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114155275] [2020-10-13 10:22:09,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:09,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:22:09,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662912726] [2020-10-13 10:22:09,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:22:09,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:09,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:22:09,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:22:09,173 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 10 states. [2020-10-13 10:22:09,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:09,648 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-10-13 10:22:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:22:09,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-13 10:22:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:09,650 INFO L225 Difference]: With dead ends: 130 [2020-10-13 10:22:09,650 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:22:09,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:09,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:22:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-13 10:22:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:22:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-10-13 10:22:09,659 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 32 [2020-10-13 10:22:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:09,660 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-10-13 10:22:09,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:22:09,660 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-10-13 10:22:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:09,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:09,661 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 10:22:09,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:22:09,661 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:09,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:09,661 INFO L82 PathProgramCache]: Analyzing trace with hash -862405126, now seen corresponding path program 3 times [2020-10-13 10:22:09,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:09,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375734051] [2020-10-13 10:22:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:10,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 10:22:10,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:22:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:10,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:10,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:10,792 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 10:22:10,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375734051] [2020-10-13 10:22:10,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:10,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:10,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243588960] [2020-10-13 10:22:10,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:10,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:10,794 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 14 states. [2020-10-13 10:22:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:11,416 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2020-10-13 10:22:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:11,416 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-13 10:22:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:11,418 INFO L225 Difference]: With dead ends: 120 [2020-10-13 10:22:11,418 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:22:11,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:22:11,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2020-10-13 10:22:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:22:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-13 10:22:11,427 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 33 [2020-10-13 10:22:11,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:11,427 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-13 10:22:11,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-13 10:22:11,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:11,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:11,428 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 10:22:11,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:22:11,428 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:11,429 INFO L82 PathProgramCache]: Analyzing trace with hash 842705248, now seen corresponding path program 2 times [2020-10-13 10:22:11,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:11,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477126431] [2020-10-13 10:22:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:11,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:11,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:11,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-13 10:22:11,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:11,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:22:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:11,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:11,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:11,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:11,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:11,981 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 10:22:11,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477126431] [2020-10-13 10:22:11,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:11,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:11,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156915078] [2020-10-13 10:22:11,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:11,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:11,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:11,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:11,984 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 12 states. [2020-10-13 10:22:12,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:12,793 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2020-10-13 10:22:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:12,793 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-13 10:22:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:12,797 INFO L225 Difference]: With dead ends: 115 [2020-10-13 10:22:12,797 INFO L226 Difference]: Without dead ends: 113 [2020-10-13 10:22:12,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:12,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-13 10:22:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 91. [2020-10-13 10:22:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 10:22:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2020-10-13 10:22:12,809 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 33 [2020-10-13 10:22:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:12,809 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2020-10-13 10:22:12,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2020-10-13 10:22:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:12,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:12,810 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 10:22:12,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:22:12,811 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:12,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1957791412, now seen corresponding path program 2 times [2020-10-13 10:22:12,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:12,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065168922] [2020-10-13 10:22:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:13,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:13,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-13 10:22:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:22:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:13,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:13,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:13,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:13,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:13,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,778 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 10:22:13,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065168922] [2020-10-13 10:22:13,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:13,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:13,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752143443] [2020-10-13 10:22:13,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:13,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:13,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:13,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:13,781 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 11 states. [2020-10-13 10:22:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:14,339 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-10-13 10:22:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:22:14,340 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-13 10:22:14,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:14,342 INFO L225 Difference]: With dead ends: 119 [2020-10-13 10:22:14,342 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 10:22:14,343 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:14,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 10:22:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 86. [2020-10-13 10:22:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:22:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-13 10:22:14,351 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 33 [2020-10-13 10:22:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:14,351 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-13 10:22:14,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-13 10:22:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:14,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:14,352 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:14,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:22:14,353 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:14,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1002953736, now seen corresponding path program 3 times [2020-10-13 10:22:14,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:14,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914168643] [2020-10-13 10:22:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:14,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-13 10:22:14,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:22:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:15,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:15,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:15,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:15,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:15,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:15,241 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 10:22:15,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914168643] [2020-10-13 10:22:15,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:15,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:15,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829740368] [2020-10-13 10:22:15,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:15,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:15,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:15,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:15,244 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 12 states. [2020-10-13 10:22:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:16,202 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2020-10-13 10:22:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:16,205 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-13 10:22:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:16,206 INFO L225 Difference]: With dead ends: 123 [2020-10-13 10:22:16,206 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 10:22:16,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 10:22:16,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2020-10-13 10:22:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:22:16,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-13 10:22:16,217 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 33 [2020-10-13 10:22:16,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:16,218 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-13 10:22:16,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:16,218 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-13 10:22:16,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:16,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:16,218 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 10:22:16,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:22:16,219 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:16,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:16,220 INFO L82 PathProgramCache]: Analyzing trace with hash 112132428, now seen corresponding path program 3 times [2020-10-13 10:22:16,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:16,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893317408] [2020-10-13 10:22:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:16,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-13 10:22:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:16,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:22:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:16,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:16,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:16,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:16,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:16,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:16,906 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 10:22:16,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893317408] [2020-10-13 10:22:16,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:16,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:16,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120742666] [2020-10-13 10:22:16,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:16,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:16,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:16,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:16,908 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 12 states. [2020-10-13 10:22:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:17,654 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2020-10-13 10:22:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:17,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-13 10:22:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:17,656 INFO L225 Difference]: With dead ends: 124 [2020-10-13 10:22:17,656 INFO L226 Difference]: Without dead ends: 122 [2020-10-13 10:22:17,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-13 10:22:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2020-10-13 10:22:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:22:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2020-10-13 10:22:17,666 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 33 [2020-10-13 10:22:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:17,667 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2020-10-13 10:22:17,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2020-10-13 10:22:17,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:22:17,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:17,667 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 10:22:17,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:22:17,668 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1738936694, now seen corresponding path program 4 times [2020-10-13 10:22:17,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:17,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718419130] [2020-10-13 10:22:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:17,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:22:17,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 10:22:17,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:22:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:18,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:18,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:18,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:18,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:18,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:18,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:18,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:18,020 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 10:22:18,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718419130] [2020-10-13 10:22:18,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:18,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:18,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969185286] [2020-10-13 10:22:18,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:18,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:18,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:18,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:18,022 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 11 states. [2020-10-13 10:22:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:18,547 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2020-10-13 10:22:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:18,548 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-13 10:22:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:18,549 INFO L225 Difference]: With dead ends: 103 [2020-10-13 10:22:18,549 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:22:18,550 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 10:22:18,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:22:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-13 10:22:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:22:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-13 10:22:18,557 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 33 [2020-10-13 10:22:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:18,558 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-13 10:22:18,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-13 10:22:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:22:18,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:18,559 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 10:22:18,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:22:18,559 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:18,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:18,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2083831756, now seen corresponding path program 2 times [2020-10-13 10:22:18,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:18,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685502252] [2020-10-13 10:22:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:22:19,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:19,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-13 10:22:19,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:19,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:19,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:19,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:19,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:19,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:19,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:19,356 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 10:22:19,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685502252] [2020-10-13 10:22:19,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:19,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:19,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511467447] [2020-10-13 10:22:19,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:19,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:19,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:19,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:19,359 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 13 states. [2020-10-13 10:22:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:20,621 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2020-10-13 10:22:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:20,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-13 10:22:20,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:20,626 INFO L225 Difference]: With dead ends: 202 [2020-10-13 10:22:20,626 INFO L226 Difference]: Without dead ends: 200 [2020-10-13 10:22:20,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-13 10:22:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 111. [2020-10-13 10:22:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 10:22:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-10-13 10:22:20,650 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 35 [2020-10-13 10:22:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:20,650 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-10-13 10:22:20,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-10-13 10:22:20,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:22:20,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:20,652 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 10:22:20,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:22:20,652 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:20,653 INFO L82 PathProgramCache]: Analyzing trace with hash -2077122034, now seen corresponding path program 1 times [2020-10-13 10:22:20,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:20,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932870391] [2020-10-13 10:22:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:22:20,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-13 10:22:20,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:22:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:21,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:21,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:21,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:21,328 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 10:22:21,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932870391] [2020-10-13 10:22:21,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:21,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:21,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470279704] [2020-10-13 10:22:21,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:21,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:21,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:21,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:21,331 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 13 states. [2020-10-13 10:22:22,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:22,208 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2020-10-13 10:22:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:22,209 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-13 10:22:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:22,210 INFO L225 Difference]: With dead ends: 195 [2020-10-13 10:22:22,210 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 10:22:22,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:22,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 10:22:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 148. [2020-10-13 10:22:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 10:22:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 165 transitions. [2020-10-13 10:22:22,223 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 165 transitions. Word has length 35 [2020-10-13 10:22:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:22,224 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 165 transitions. [2020-10-13 10:22:22,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 165 transitions. [2020-10-13 10:22:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:22:22,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:22,229 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 10:22:22,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:22:22,229 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:22,230 INFO L82 PathProgramCache]: Analyzing trace with hash -943401652, now seen corresponding path program 4 times [2020-10-13 10:22:22,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:22,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737208121] [2020-10-13 10:22:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:22,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:22:22,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:22,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-13 10:22:22,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:22,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:22,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:22:22,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:23,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:23,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:23,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:23,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,321 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 10:22:23,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737208121] [2020-10-13 10:22:23,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:23,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:23,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484456556] [2020-10-13 10:22:23,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:23,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:23,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:23,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:23,323 INFO L87 Difference]: Start difference. First operand 148 states and 165 transitions. Second operand 14 states. [2020-10-13 10:22:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:24,264 INFO L93 Difference]: Finished difference Result 197 states and 219 transitions. [2020-10-13 10:22:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:24,266 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-13 10:22:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:24,268 INFO L225 Difference]: With dead ends: 197 [2020-10-13 10:22:24,268 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 10:22:24,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:22:24,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 10:22:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 165. [2020-10-13 10:22:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 10:22:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-10-13 10:22:24,289 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 36 [2020-10-13 10:22:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:24,289 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-10-13 10:22:24,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-10-13 10:22:24,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:22:24,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:24,290 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 10:22:24,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:22:24,290 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:24,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:24,291 INFO L82 PathProgramCache]: Analyzing trace with hash 171684512, now seen corresponding path program 4 times [2020-10-13 10:22:24,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:24,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721904925] [2020-10-13 10:22:24,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:24,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:22:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-13 10:22:25,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:22:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,647 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 10:22:25,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721904925] [2020-10-13 10:22:25,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:25,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:25,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235441755] [2020-10-13 10:22:25,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:25,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:25,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:25,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:25,649 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 12 states. [2020-10-13 10:22:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:26,239 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2020-10-13 10:22:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:26,239 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-13 10:22:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:26,241 INFO L225 Difference]: With dead ends: 198 [2020-10-13 10:22:26,241 INFO L226 Difference]: Without dead ends: 186 [2020-10-13 10:22:26,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-13 10:22:26,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-10-13 10:22:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 10:22:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 167 transitions. [2020-10-13 10:22:26,255 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 167 transitions. Word has length 36 [2020-10-13 10:22:26,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:26,255 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 167 transitions. [2020-10-13 10:22:26,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 167 transitions. [2020-10-13 10:22:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:22:26,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:26,256 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 10:22:26,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:26,257 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:26,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1083950262, now seen corresponding path program 5 times [2020-10-13 10:22:26,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:26,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835616591] [2020-10-13 10:22:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:26,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:22:26,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-13 10:22:26,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:26,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:26,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:26,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:22:26,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:26,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:26,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:26,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:26,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:26,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:26,963 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 10:22:26,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835616591] [2020-10-13 10:22:26,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:26,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:26,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552018907] [2020-10-13 10:22:26,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:26,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:26,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:26,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:26,965 INFO L87 Difference]: Start difference. First operand 149 states and 167 transitions. Second operand 13 states. [2020-10-13 10:22:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:27,566 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2020-10-13 10:22:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:27,566 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-13 10:22:27,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:27,568 INFO L225 Difference]: With dead ends: 188 [2020-10-13 10:22:27,568 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 10:22:27,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 10:22:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2020-10-13 10:22:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-13 10:22:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2020-10-13 10:22:27,583 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 36 [2020-10-13 10:22:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:27,583 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2020-10-13 10:22:27,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2020-10-13 10:22:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:27,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:27,585 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 10:22:27,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:27,585 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:27,585 INFO L82 PathProgramCache]: Analyzing trace with hash -21461300, now seen corresponding path program 1 times [2020-10-13 10:22:27,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:27,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621672016] [2020-10-13 10:22:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:27,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:27,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-13 10:22:27,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:22:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:28,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:28,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:28,361 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 10:22:28,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621672016] [2020-10-13 10:22:28,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:28,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:28,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830422630] [2020-10-13 10:22:28,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:28,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:28,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:28,363 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand 14 states. [2020-10-13 10:22:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:29,386 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2020-10-13 10:22:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:29,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-13 10:22:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:29,388 INFO L225 Difference]: With dead ends: 177 [2020-10-13 10:22:29,389 INFO L226 Difference]: Without dead ends: 175 [2020-10-13 10:22:29,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-13 10:22:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 143. [2020-10-13 10:22:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 10:22:29,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2020-10-13 10:22:29,401 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 38 [2020-10-13 10:22:29,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:29,401 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2020-10-13 10:22:29,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:29,402 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2020-10-13 10:22:29,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:29,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:29,403 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 10:22:29,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:29,403 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:29,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:29,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1093624864, now seen corresponding path program 3 times [2020-10-13 10:22:29,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:29,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252075949] [2020-10-13 10:22:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:30,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:30,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:30,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-10-13 10:22:30,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:22:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:30,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:30,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:30,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:30,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:30,831 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 10:22:30,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252075949] [2020-10-13 10:22:30,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:30,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:30,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104719414] [2020-10-13 10:22:30,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:30,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:30,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:30,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:30,833 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand 13 states. [2020-10-13 10:22:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:31,500 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2020-10-13 10:22:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:31,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-13 10:22:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:31,502 INFO L225 Difference]: With dead ends: 182 [2020-10-13 10:22:31,502 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 10:22:31,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 10:22:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-10-13 10:22:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-13 10:22:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2020-10-13 10:22:31,515 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 38 [2020-10-13 10:22:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:31,516 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2020-10-13 10:22:31,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2020-10-13 10:22:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:31,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:31,517 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 10:22:31,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:31,517 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1721423476, now seen corresponding path program 4 times [2020-10-13 10:22:31,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:31,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578358600] [2020-10-13 10:22:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:31,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:31,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:31,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:31,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-13 10:22:31,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:31,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:22:31,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:32,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:32,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:32,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:32,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:32,444 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 10:22:32,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578358600] [2020-10-13 10:22:32,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:32,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:32,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797549231] [2020-10-13 10:22:32,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:32,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:32,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:32,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:32,446 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand 15 states. [2020-10-13 10:22:33,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:33,738 INFO L93 Difference]: Finished difference Result 216 states and 235 transitions. [2020-10-13 10:22:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:33,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-13 10:22:33,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:33,740 INFO L225 Difference]: With dead ends: 216 [2020-10-13 10:22:33,740 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 10:22:33,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:22:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 10:22:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 157. [2020-10-13 10:22:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-13 10:22:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2020-10-13 10:22:33,753 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 38 [2020-10-13 10:22:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:33,753 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2020-10-13 10:22:33,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2020-10-13 10:22:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:22:33,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:33,754 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, 1, 1] [2020-10-13 10:22:33,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:33,754 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:33,754 INFO L82 PathProgramCache]: Analyzing trace with hash -829603170, now seen corresponding path program 2 times [2020-10-13 10:22:33,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:33,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872229608] [2020-10-13 10:22:33,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:33,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:22:33,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-13 10:22:33,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:22:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:34,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:34,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:34,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:34,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:34,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:34,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:34,220 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 10:22:34,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872229608] [2020-10-13 10:22:34,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:34,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:34,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208774350] [2020-10-13 10:22:34,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:34,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:34,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:34,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:34,223 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 13 states. [2020-10-13 10:22:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:34,998 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2020-10-13 10:22:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:34,998 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-13 10:22:34,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:34,999 INFO L225 Difference]: With dead ends: 192 [2020-10-13 10:22:35,000 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 10:22:35,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 10:22:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-13 10:22:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-13 10:22:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-10-13 10:22:35,012 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 38 [2020-10-13 10:22:35,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:35,013 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-10-13 10:22:35,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-10-13 10:22:35,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:22:35,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:35,014 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 10:22:35,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:35,014 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:35,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:35,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1021251364, now seen corresponding path program 2 times [2020-10-13 10:22:35,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:35,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044602045] [2020-10-13 10:22:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:35,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:35,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:22:35,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-13 10:22:35,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:22:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:36,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:36,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:36,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:36,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:36,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:36,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:36,060 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 10:22:36,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044602045] [2020-10-13 10:22:36,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:36,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:36,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433364664] [2020-10-13 10:22:36,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:36,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:36,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:36,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:36,062 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 16 states. [2020-10-13 10:22:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:37,365 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2020-10-13 10:22:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:22:37,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-13 10:22:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:37,367 INFO L225 Difference]: With dead ends: 200 [2020-10-13 10:22:37,367 INFO L226 Difference]: Without dead ends: 198 [2020-10-13 10:22:37,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:22:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-13 10:22:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 165. [2020-10-13 10:22:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 10:22:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2020-10-13 10:22:37,380 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 41 [2020-10-13 10:22:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:37,380 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2020-10-13 10:22:37,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:22:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2020-10-13 10:22:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:22:37,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:37,381 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 10:22:37,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:37,381 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:37,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:37,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2136337528, now seen corresponding path program 5 times [2020-10-13 10:22:37,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:37,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463177439] [2020-10-13 10:22:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:38,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:22:38,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-13 10:22:38,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:38,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:22:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:39,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:39,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:39,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:39,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:39,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:39,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:39,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:39,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:39,469 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 10:22:39,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463177439] [2020-10-13 10:22:39,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:39,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:39,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088859588] [2020-10-13 10:22:39,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:39,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:39,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:39,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:39,471 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand 15 states. [2020-10-13 10:22:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:40,816 INFO L93 Difference]: Finished difference Result 216 states and 242 transitions. [2020-10-13 10:22:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:40,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:22:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:40,818 INFO L225 Difference]: With dead ends: 216 [2020-10-13 10:22:40,818 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 10:22:40,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 10:22:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 128. [2020-10-13 10:22:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 10:22:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2020-10-13 10:22:40,833 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 41 [2020-10-13 10:22:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:40,833 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2020-10-13 10:22:40,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2020-10-13 10:22:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:22:40,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:40,834 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 10:22:40,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:22:40,835 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:40,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:40,835 INFO L82 PathProgramCache]: Analyzing trace with hash 998619110, now seen corresponding path program 1 times [2020-10-13 10:22:40,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:40,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892085214] [2020-10-13 10:22:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:41,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:22:41,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:41,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-13 10:22:41,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:41,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:41,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:41,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:22:41,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:41,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:41,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:41,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:41,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:41,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:41,745 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 10:22:41,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892085214] [2020-10-13 10:22:41,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:41,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:41,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033602312] [2020-10-13 10:22:41,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:41,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:41,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:41,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:41,746 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand 15 states. [2020-10-13 10:22:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:42,794 INFO L93 Difference]: Finished difference Result 181 states and 204 transitions. [2020-10-13 10:22:42,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:42,795 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:22:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:42,796 INFO L225 Difference]: With dead ends: 181 [2020-10-13 10:22:42,796 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 10:22:42,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:22:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 10:22:42,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 127. [2020-10-13 10:22:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-13 10:22:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2020-10-13 10:22:42,807 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 41 [2020-10-13 10:22:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:42,807 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2020-10-13 10:22:42,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2020-10-13 10:22:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:22:42,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:42,808 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 10:22:42,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:22:42,809 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:42,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2113705274, now seen corresponding path program 3 times [2020-10-13 10:22:42,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:42,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644692147] [2020-10-13 10:22:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:43,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:22:43,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-13 10:22:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:22:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:43,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:43,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:43,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:43,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:43,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:43,731 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 10:22:43,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644692147] [2020-10-13 10:22:43,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:43,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:43,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247019268] [2020-10-13 10:22:43,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:43,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:43,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:43,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:43,735 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand 15 states. [2020-10-13 10:22:45,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:45,237 INFO L93 Difference]: Finished difference Result 325 states and 360 transitions. [2020-10-13 10:22:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:45,239 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:22:45,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:45,240 INFO L225 Difference]: With dead ends: 325 [2020-10-13 10:22:45,240 INFO L226 Difference]: Without dead ends: 323 [2020-10-13 10:22:45,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:22:45,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-13 10:22:45,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 192. [2020-10-13 10:22:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-13 10:22:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2020-10-13 10:22:45,260 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 41 [2020-10-13 10:22:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:45,261 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2020-10-13 10:22:45,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2020-10-13 10:22:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:22:45,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:45,262 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 10:22:45,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:22:45,262 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:45,263 INFO L82 PathProgramCache]: Analyzing trace with hash 190477240, now seen corresponding path program 4 times [2020-10-13 10:22:45,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:45,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295322305] [2020-10-13 10:22:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:45,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:45,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:22:45,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-13 10:22:45,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:22:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:46,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:46,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:46,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:46,016 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 10:22:46,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295322305] [2020-10-13 10:22:46,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:46,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:46,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610874283] [2020-10-13 10:22:46,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:46,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:46,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:46,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:46,017 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand 15 states. [2020-10-13 10:22:47,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:47,119 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2020-10-13 10:22:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:47,120 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-13 10:22:47,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:47,121 INFO L225 Difference]: With dead ends: 320 [2020-10-13 10:22:47,121 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 10:22:47,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:22:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 10:22:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 232. [2020-10-13 10:22:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-13 10:22:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 257 transitions. [2020-10-13 10:22:47,160 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 257 transitions. Word has length 41 [2020-10-13 10:22:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:47,160 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 257 transitions. [2020-10-13 10:22:47,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 257 transitions. [2020-10-13 10:22:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:22:47,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:47,162 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 10:22:47,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:22:47,163 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1601290466, now seen corresponding path program 6 times [2020-10-13 10:22:47,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:47,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495599595] [2020-10-13 10:22:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:47,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:47,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:22:47,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:47,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-13 10:22:47,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:22:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:48,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:48,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:48,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:48,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:48,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:48,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:48,018 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 10:22:48,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495599595] [2020-10-13 10:22:48,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:48,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:48,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687593733] [2020-10-13 10:22:48,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:48,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:48,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:48,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:48,020 INFO L87 Difference]: Start difference. First operand 232 states and 257 transitions. Second operand 14 states. [2020-10-13 10:22:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:49,043 INFO L93 Difference]: Finished difference Result 288 states and 316 transitions. [2020-10-13 10:22:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:49,044 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-13 10:22:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:49,045 INFO L225 Difference]: With dead ends: 288 [2020-10-13 10:22:49,046 INFO L226 Difference]: Without dead ends: 236 [2020-10-13 10:22:49,046 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 10:22:49,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-13 10:22:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-10-13 10:22:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-13 10:22:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2020-10-13 10:22:49,069 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 43 [2020-10-13 10:22:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:49,069 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2020-10-13 10:22:49,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2020-10-13 10:22:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:22:49,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:49,071 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 10:22:49,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:22:49,071 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:49,071 INFO L82 PathProgramCache]: Analyzing trace with hash 882283166, now seen corresponding path program 2 times [2020-10-13 10:22:49,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:49,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107103334] [2020-10-13 10:22:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:49,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:49,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:49,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:49,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-13 10:22:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:22:49,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:50,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:50,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:50,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:50,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:50,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:50,212 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 10:22:50,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107103334] [2020-10-13 10:22:50,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:50,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:50,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779351180] [2020-10-13 10:22:50,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:50,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:50,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:50,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:50,213 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand 16 states. [2020-10-13 10:22:51,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:51,765 INFO L93 Difference]: Finished difference Result 273 states and 305 transitions. [2020-10-13 10:22:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:22:51,766 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-13 10:22:51,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:51,767 INFO L225 Difference]: With dead ends: 273 [2020-10-13 10:22:51,768 INFO L226 Difference]: Without dead ends: 271 [2020-10-13 10:22:51,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:22:51,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-13 10:22:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 235. [2020-10-13 10:22:51,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-13 10:22:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 260 transitions. [2020-10-13 10:22:51,794 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 260 transitions. Word has length 44 [2020-10-13 10:22:51,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:51,794 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 260 transitions. [2020-10-13 10:22:51,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:22:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 260 transitions. [2020-10-13 10:22:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:22:51,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:51,795 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 10:22:51,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:22:51,796 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:51,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:51,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1997369330, now seen corresponding path program 5 times [2020-10-13 10:22:51,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:51,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113440068] [2020-10-13 10:22:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:51,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:52,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:52,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:52,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:52,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:52,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-10-13 10:22:52,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:52,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:22:52,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:53,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:53,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:53,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:53,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:53,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:53,456 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 10:22:53,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113440068] [2020-10-13 10:22:53,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:53,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:53,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716217700] [2020-10-13 10:22:53,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:53,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:53,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:53,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:53,457 INFO L87 Difference]: Start difference. First operand 235 states and 260 transitions. Second operand 15 states. [2020-10-13 10:22:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:54,519 INFO L93 Difference]: Finished difference Result 263 states and 290 transitions. [2020-10-13 10:22:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:54,519 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-13 10:22:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:54,521 INFO L225 Difference]: With dead ends: 263 [2020-10-13 10:22:54,521 INFO L226 Difference]: Without dead ends: 251 [2020-10-13 10:22:54,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-13 10:22:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 214. [2020-10-13 10:22:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-13 10:22:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2020-10-13 10:22:54,544 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 44 [2020-10-13 10:22:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:54,545 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2020-10-13 10:22:54,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2020-10-13 10:22:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:22:54,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:54,546 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 10:22:54,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:22:54,546 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:54,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:54,546 INFO L82 PathProgramCache]: Analyzing trace with hash 163245342, now seen corresponding path program 6 times [2020-10-13 10:22:54,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:54,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370885820] [2020-10-13 10:22:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:55,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:55,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:55,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:55,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-13 10:22:55,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:22:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:55,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:22:55,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:56,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:56,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:56,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:56,021 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 10:22:56,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370885820] [2020-10-13 10:22:56,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:56,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:22:56,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064495028] [2020-10-13 10:22:56,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:22:56,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:56,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:22:56,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:56,022 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand 17 states. [2020-10-13 10:22:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:57,701 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2020-10-13 10:22:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:22:57,702 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-13 10:22:57,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:57,704 INFO L225 Difference]: With dead ends: 303 [2020-10-13 10:22:57,704 INFO L226 Difference]: Without dead ends: 301 [2020-10-13 10:22:57,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:22:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-13 10:22:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2020-10-13 10:22:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-13 10:22:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2020-10-13 10:22:57,731 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 44 [2020-10-13 10:22:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:57,731 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2020-10-13 10:22:57,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:22:57,731 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2020-10-13 10:22:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:22:57,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:57,733 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 10:22:57,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:22:57,733 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:57,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:57,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1974737076, now seen corresponding path program 7 times [2020-10-13 10:22:57,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:57,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092780226] [2020-10-13 10:22:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:58,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:22:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:58,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:58,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:58,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:58,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:58,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:58,791 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 10:22:58,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092780226] [2020-10-13 10:22:58,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:58,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:58,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223341936] [2020-10-13 10:22:58,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:58,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:58,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:58,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:58,793 INFO L87 Difference]: Start difference. First operand 252 states and 277 transitions. Second operand 15 states. [2020-10-13 10:22:59,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:59,908 INFO L93 Difference]: Finished difference Result 266 states and 292 transitions. [2020-10-13 10:22:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:59,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-13 10:22:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:59,910 INFO L225 Difference]: With dead ends: 266 [2020-10-13 10:22:59,910 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 10:22:59,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 10:22:59,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-13 10:22:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 10:22:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2020-10-13 10:22:59,929 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 44 [2020-10-13 10:22:59,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:59,929 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2020-10-13 10:22:59,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:59,929 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2020-10-13 10:22:59,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:22:59,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:59,930 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 10:22:59,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:22:59,930 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1303728246, now seen corresponding path program 7 times [2020-10-13 10:22:59,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:59,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739194424] [2020-10-13 10:22:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:00,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:00,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:23:00,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:00,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-13 10:23:00,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:00,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:23:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:01,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:01,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:01,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:01,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:01,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:01,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:01,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:01,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:01,108 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 10:23:01,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739194424] [2020-10-13 10:23:01,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:01,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:01,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020585641] [2020-10-13 10:23:01,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:01,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:01,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:01,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:01,110 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand 17 states. [2020-10-13 10:23:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:03,323 INFO L93 Difference]: Finished difference Result 484 states and 532 transitions. [2020-10-13 10:23:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:03,324 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-13 10:23:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:03,326 INFO L225 Difference]: With dead ends: 484 [2020-10-13 10:23:03,327 INFO L226 Difference]: Without dead ends: 482 [2020-10-13 10:23:03,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-13 10:23:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 292. [2020-10-13 10:23:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-13 10:23:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 325 transitions. [2020-10-13 10:23:03,358 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 325 transitions. Word has length 46 [2020-10-13 10:23:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:03,359 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 325 transitions. [2020-10-13 10:23:03,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 325 transitions. [2020-10-13 10:23:03,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:23:03,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:03,360 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 10:23:03,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:23:03,360 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:03,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1578487860, now seen corresponding path program 8 times [2020-10-13 10:23:03,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:03,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714659449] [2020-10-13 10:23:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:03,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:03,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:23:03,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-13 10:23:03,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:23:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:04,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:04,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:04,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:04,519 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 10:23:04,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714659449] [2020-10-13 10:23:04,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:04,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:04,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52523910] [2020-10-13 10:23:04,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:04,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:04,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:04,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:04,520 INFO L87 Difference]: Start difference. First operand 292 states and 325 transitions. Second operand 17 states. [2020-10-13 10:23:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:06,258 INFO L93 Difference]: Finished difference Result 455 states and 497 transitions. [2020-10-13 10:23:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:06,259 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-13 10:23:06,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:06,262 INFO L225 Difference]: With dead ends: 455 [2020-10-13 10:23:06,262 INFO L226 Difference]: Without dead ends: 443 [2020-10-13 10:23:06,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-13 10:23:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 398. [2020-10-13 10:23:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-13 10:23:06,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 437 transitions. [2020-10-13 10:23:06,295 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 437 transitions. Word has length 46 [2020-10-13 10:23:06,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:06,296 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 437 transitions. [2020-10-13 10:23:06,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:06,296 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 437 transitions. [2020-10-13 10:23:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:06,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:06,297 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 10:23:06,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:23:06,297 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:06,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:06,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1342996538, now seen corresponding path program 3 times [2020-10-13 10:23:06,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:06,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26311505] [2020-10-13 10:23:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:06,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:07,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:07,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 941 [2020-10-13 10:23:07,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:07,608 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-13 10:23:07,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:07,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:07,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:07,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:07,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,001 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 10:23:08,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26311505] [2020-10-13 10:23:08,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:08,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:23:08,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322249971] [2020-10-13 10:23:08,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:23:08,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:08,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:23:08,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:08,003 INFO L87 Difference]: Start difference. First operand 398 states and 437 transitions. Second operand 18 states. [2020-10-13 10:23:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:09,974 INFO L93 Difference]: Finished difference Result 510 states and 558 transitions. [2020-10-13 10:23:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:23:09,975 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-13 10:23:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:09,978 INFO L225 Difference]: With dead ends: 510 [2020-10-13 10:23:09,978 INFO L226 Difference]: Without dead ends: 508 [2020-10-13 10:23:09,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:23:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-13 10:23:10,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 462. [2020-10-13 10:23:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-13 10:23:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 508 transitions. [2020-10-13 10:23:10,024 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 508 transitions. Word has length 47 [2020-10-13 10:23:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:10,024 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 508 transitions. [2020-10-13 10:23:10,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:23:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 508 transitions. [2020-10-13 10:23:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:10,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:10,026 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 10:23:10,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:23:10,026 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:10,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1836884594, now seen corresponding path program 9 times [2020-10-13 10:23:10,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:10,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859005437] [2020-10-13 10:23:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:10,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:12,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:12,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:12,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2270 [2020-10-13 10:23:12,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:12,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:23:12,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:13,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:13,273 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 10:23:13,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859005437] [2020-10-13 10:23:13,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:13,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:13,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823161022] [2020-10-13 10:23:13,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:13,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:13,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:13,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:13,275 INFO L87 Difference]: Start difference. First operand 462 states and 508 transitions. Second operand 17 states. [2020-10-13 10:23:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:14,664 INFO L93 Difference]: Finished difference Result 511 states and 559 transitions. [2020-10-13 10:23:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:23:14,665 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-13 10:23:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:14,667 INFO L225 Difference]: With dead ends: 511 [2020-10-13 10:23:14,668 INFO L226 Difference]: Without dead ends: 499 [2020-10-13 10:23:14,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:23:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-13 10:23:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 401. [2020-10-13 10:23:14,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-13 10:23:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 443 transitions. [2020-10-13 10:23:14,696 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 443 transitions. Word has length 47 [2020-10-13 10:23:14,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:14,696 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 443 transitions. [2020-10-13 10:23:14,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:14,697 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 443 transitions. [2020-10-13 10:23:14,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:23:14,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:14,697 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 10:23:14,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:23:14,698 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:14,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1415383096, now seen corresponding path program 4 times [2020-10-13 10:23:14,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:14,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727610655] [2020-10-13 10:23:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:14,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:15,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:23:15,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:15,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 573 [2020-10-13 10:23:15,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:15,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:23:15,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:16,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:16,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:16,065 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 10:23:16,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727610655] [2020-10-13 10:23:16,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:16,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:16,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677279601] [2020-10-13 10:23:16,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:16,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:16,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:16,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:16,066 INFO L87 Difference]: Start difference. First operand 401 states and 443 transitions. Second operand 17 states. [2020-10-13 10:23:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:17,493 INFO L93 Difference]: Finished difference Result 472 states and 530 transitions. [2020-10-13 10:23:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:23:17,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-13 10:23:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:17,496 INFO L225 Difference]: With dead ends: 472 [2020-10-13 10:23:17,496 INFO L226 Difference]: Without dead ends: 459 [2020-10-13 10:23:17,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:23:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-13 10:23:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 380. [2020-10-13 10:23:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-13 10:23:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 420 transitions. [2020-10-13 10:23:17,537 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 420 transitions. Word has length 47 [2020-10-13 10:23:17,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:17,538 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 420 transitions. [2020-10-13 10:23:17,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:17,538 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 420 transitions. [2020-10-13 10:23:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:17,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:17,539 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 10:23:17,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:23:17,539 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:17,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:17,540 INFO L82 PathProgramCache]: Analyzing trace with hash 25073230, now seen corresponding path program 3 times [2020-10-13 10:23:17,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:17,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161810710] [2020-10-13 10:23:17,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:17,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:18,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-13 10:23:18,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:23:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:23:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:19,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:19,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:19,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:19,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:19,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:19,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:19,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:19,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:19,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:19,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:19,172 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 10:23:19,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161810710] [2020-10-13 10:23:19,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:19,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:23:19,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600781318] [2020-10-13 10:23:19,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:23:19,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:19,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:23:19,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:19,174 INFO L87 Difference]: Start difference. First operand 380 states and 420 transitions. Second operand 18 states. [2020-10-13 10:23:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:21,567 INFO L93 Difference]: Finished difference Result 531 states and 585 transitions. [2020-10-13 10:23:21,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:23:21,568 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-13 10:23:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:21,571 INFO L225 Difference]: With dead ends: 531 [2020-10-13 10:23:21,571 INFO L226 Difference]: Without dead ends: 529 [2020-10-13 10:23:21,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:23:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-13 10:23:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 417. [2020-10-13 10:23:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-13 10:23:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 458 transitions. [2020-10-13 10:23:21,606 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 458 transitions. Word has length 49 [2020-10-13 10:23:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:21,606 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 458 transitions. [2020-10-13 10:23:21,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:23:21,606 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 458 transitions. [2020-10-13 10:23:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:21,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:21,607 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 10:23:21,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:23:21,608 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:21,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1140159394, now seen corresponding path program 8 times [2020-10-13 10:23:21,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:21,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551654145] [2020-10-13 10:23:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:22,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:22,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:23:22,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-10-13 10:23:22,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:22,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:22,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:23:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:23,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:23,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:23,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:23,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:23,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:23,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:23,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:23,711 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 10:23:23,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551654145] [2020-10-13 10:23:23,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:23,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:23,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941708] [2020-10-13 10:23:23,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:23,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:23,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:23,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:23,713 INFO L87 Difference]: Start difference. First operand 417 states and 458 transitions. Second operand 17 states. [2020-10-13 10:23:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:25,711 INFO L93 Difference]: Finished difference Result 478 states and 532 transitions. [2020-10-13 10:23:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:23:25,711 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-13 10:23:25,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:25,714 INFO L225 Difference]: With dead ends: 478 [2020-10-13 10:23:25,714 INFO L226 Difference]: Without dead ends: 466 [2020-10-13 10:23:25,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:25,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-13 10:23:25,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 380. [2020-10-13 10:23:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-13 10:23:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 420 transitions. [2020-10-13 10:23:25,756 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 420 transitions. Word has length 49 [2020-10-13 10:23:25,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:25,756 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 420 transitions. [2020-10-13 10:23:25,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 420 transitions. [2020-10-13 10:23:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:25,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:25,758 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 10:23:25,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:23:25,758 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:25,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:25,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1125163038, now seen corresponding path program 9 times [2020-10-13 10:23:25,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:25,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804266738] [2020-10-13 10:23:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:26,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:26,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:26,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-13 10:23:26,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:26,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:23:26,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:27,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:27,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:27,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,411 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 10:23:27,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804266738] [2020-10-13 10:23:27,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:27,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:23:27,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052142118] [2020-10-13 10:23:27,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:23:27,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:27,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:23:27,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:27,413 INFO L87 Difference]: Start difference. First operand 380 states and 420 transitions. Second operand 18 states. [2020-10-13 10:23:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:29,766 INFO L93 Difference]: Finished difference Result 548 states and 594 transitions. [2020-10-13 10:23:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:23:29,767 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-13 10:23:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:29,770 INFO L225 Difference]: With dead ends: 548 [2020-10-13 10:23:29,770 INFO L226 Difference]: Without dead ends: 546 [2020-10-13 10:23:29,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:23:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-13 10:23:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 409. [2020-10-13 10:23:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-13 10:23:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 450 transitions. [2020-10-13 10:23:29,816 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 450 transitions. Word has length 49 [2020-10-13 10:23:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:29,816 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 450 transitions. [2020-10-13 10:23:29,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:23:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 450 transitions. [2020-10-13 10:23:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 10:23:29,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:29,818 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 10:23:29,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:23:29,818 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:29,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:29,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1984164896, now seen corresponding path program 10 times [2020-10-13 10:23:29,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:29,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178943039] [2020-10-13 10:23:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:29,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:30,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:30,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:30,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:30,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:30,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:30,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:31,010 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 10:23:31,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178943039] [2020-10-13 10:23:31,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:31,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:23:31,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573060025] [2020-10-13 10:23:31,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:23:31,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:31,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:23:31,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:23:31,012 INFO L87 Difference]: Start difference. First operand 409 states and 450 transitions. Second operand 17 states. [2020-10-13 10:23:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:32,674 INFO L93 Difference]: Finished difference Result 489 states and 534 transitions. [2020-10-13 10:23:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:23:32,674 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-13 10:23:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:32,676 INFO L225 Difference]: With dead ends: 489 [2020-10-13 10:23:32,677 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 10:23:32,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:23:32,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 10:23:32,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-13 10:23:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 10:23:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 355 transitions. [2020-10-13 10:23:32,708 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 355 transitions. Word has length 49 [2020-10-13 10:23:32,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:32,709 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 355 transitions. [2020-10-13 10:23:32,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:23:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 355 transitions. [2020-10-13 10:23:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:23:32,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:32,710 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 10:23:32,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:23:32,710 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:32,711 INFO L82 PathProgramCache]: Analyzing trace with hash 133950560, now seen corresponding path program 5 times [2020-10-13 10:23:32,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:32,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88551070] [2020-10-13 10:23:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:32,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:33,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:33,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:23:33,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 960 [2020-10-13 10:23:33,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:23:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:23:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:34,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:34,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:34,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:34,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:34,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:34,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:34,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:34,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:34,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88551070] [2020-10-13 10:23:34,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:34,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:23:34,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315502766] [2020-10-13 10:23:34,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:23:34,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:34,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:23:34,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:34,566 INFO L87 Difference]: Start difference. First operand 319 states and 355 transitions. Second operand 18 states. [2020-10-13 10:23:36,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:36,134 INFO L93 Difference]: Finished difference Result 409 states and 455 transitions. [2020-10-13 10:23:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:36,135 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2020-10-13 10:23:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:36,137 INFO L225 Difference]: With dead ends: 409 [2020-10-13 10:23:36,137 INFO L226 Difference]: Without dead ends: 396 [2020-10-13 10:23:36,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:23:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-13 10:23:36,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 319. [2020-10-13 10:23:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 10:23:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 354 transitions. [2020-10-13 10:23:36,177 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 354 transitions. Word has length 50 [2020-10-13 10:23:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:36,177 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 354 transitions. [2020-10-13 10:23:36,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:23:36,178 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 354 transitions. [2020-10-13 10:23:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:23:36,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:36,179 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 10:23:36,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 10:23:36,179 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1803294986, now seen corresponding path program 4 times [2020-10-13 10:23:36,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:36,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107417027] [2020-10-13 10:23:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:37,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:37,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:23:37,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:37,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-10-13 10:23:37,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:23:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:23:37,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:37,667 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-13 10:23:38,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:38,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:38,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:23:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:38,147 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 10:23:38,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107417027] [2020-10-13 10:23:38,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:38,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:23:38,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130363891] [2020-10-13 10:23:38,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:23:38,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:23:38,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:23:38,149 INFO L87 Difference]: Start difference. First operand 319 states and 354 transitions. Second operand 20 states. [2020-10-13 10:23:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:40,755 INFO L93 Difference]: Finished difference Result 538 states and 604 transitions. [2020-10-13 10:23:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:23:40,756 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-13 10:23:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:40,759 INFO L225 Difference]: With dead ends: 538 [2020-10-13 10:23:40,759 INFO L226 Difference]: Without dead ends: 536 [2020-10-13 10:23:40,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:23:40,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-10-13 10:23:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 430. [2020-10-13 10:23:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-13 10:23:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 476 transitions. [2020-10-13 10:23:40,798 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 476 transitions. Word has length 52 [2020-10-13 10:23:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:40,798 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 476 transitions. [2020-10-13 10:23:40,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:23:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 476 transitions. [2020-10-13 10:23:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:23:40,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:40,799 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 10:23:40,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 10:23:40,799 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:40,800 INFO L82 PathProgramCache]: Analyzing trace with hash -688208822, now seen corresponding path program 10 times [2020-10-13 10:23:40,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:40,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041056169] [2020-10-13 10:23:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:43,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3025 [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:23:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:44,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:44,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:44,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:44,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:44,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:44,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:44,712 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 10:23:44,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041056169] [2020-10-13 10:23:44,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:44,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:23:44,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584983077] [2020-10-13 10:23:44,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:23:44,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:44,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:23:44,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:44,714 INFO L87 Difference]: Start difference. First operand 430 states and 476 transitions. Second operand 19 states. [2020-10-13 10:23:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:47,133 INFO L93 Difference]: Finished difference Result 661 states and 738 transitions. [2020-10-13 10:23:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:23:47,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:23:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:47,137 INFO L225 Difference]: With dead ends: 661 [2020-10-13 10:23:47,137 INFO L226 Difference]: Without dead ends: 649 [2020-10-13 10:23:47,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:23:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-13 10:23:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 445. [2020-10-13 10:23:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-13 10:23:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 500 transitions. [2020-10-13 10:23:47,182 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 500 transitions. Word has length 52 [2020-10-13 10:23:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:47,182 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 500 transitions. [2020-10-13 10:23:47,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:23:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 500 transitions. [2020-10-13 10:23:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:23:47,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:47,183 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 10:23:47,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 10:23:47,183 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:47,184 INFO L82 PathProgramCache]: Analyzing trace with hash -773935688, now seen corresponding path program 6 times [2020-10-13 10:23:47,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:47,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024845862] [2020-10-13 10:23:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:47,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:47,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:47,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:23:47,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:47,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-13 10:23:47,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:23:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:47,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:23:47,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:48,476 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-13 10:23:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:48,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:48,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:48,957 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 10:23:48,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024845862] [2020-10-13 10:23:48,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:48,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:23:48,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993401447] [2020-10-13 10:23:48,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:23:48,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:48,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:23:48,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:48,958 INFO L87 Difference]: Start difference. First operand 445 states and 500 transitions. Second operand 19 states. [2020-10-13 10:23:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:51,254 INFO L93 Difference]: Finished difference Result 683 states and 773 transitions. [2020-10-13 10:23:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:23:51,255 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:23:51,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:51,258 INFO L225 Difference]: With dead ends: 683 [2020-10-13 10:23:51,259 INFO L226 Difference]: Without dead ends: 670 [2020-10-13 10:23:51,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:23:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-13 10:23:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 556. [2020-10-13 10:23:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-13 10:23:51,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 621 transitions. [2020-10-13 10:23:51,313 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 621 transitions. Word has length 52 [2020-10-13 10:23:51,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:51,313 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 621 transitions. [2020-10-13 10:23:51,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:23:51,313 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 621 transitions. [2020-10-13 10:23:51,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:23:51,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:51,315 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 10:23:51,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 10:23:51,315 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:51,316 INFO L82 PathProgramCache]: Analyzing trace with hash 341150476, now seen corresponding path program 11 times [2020-10-13 10:23:51,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:51,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244479029] [2020-10-13 10:23:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:52,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:52,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:23:52,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-10-13 10:23:52,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:23:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:23:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:52,607 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-13 10:23:52,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:52,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:52,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:52,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244479029] [2020-10-13 10:23:52,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:52,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:23:52,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986780749] [2020-10-13 10:23:52,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:23:52,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:52,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:23:52,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:52,925 INFO L87 Difference]: Start difference. First operand 556 states and 621 transitions. Second operand 19 states. [2020-10-13 10:23:55,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:55,925 INFO L93 Difference]: Finished difference Result 938 states and 1029 transitions. [2020-10-13 10:23:55,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:23:55,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:23:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:55,928 INFO L225 Difference]: With dead ends: 938 [2020-10-13 10:23:55,929 INFO L226 Difference]: Without dead ends: 936 [2020-10-13 10:23:55,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:23:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2020-10-13 10:23:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 668. [2020-10-13 10:23:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-13 10:23:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 744 transitions. [2020-10-13 10:23:55,994 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 744 transitions. Word has length 52 [2020-10-13 10:23:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:55,994 INFO L479 AbstractCegarLoop]: Abstraction has 668 states and 744 transitions. [2020-10-13 10:23:55,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:23:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 744 transitions. [2020-10-13 10:23:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:23:55,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:55,996 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 10:23:55,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 10:23:55,996 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1185155978, now seen corresponding path program 12 times [2020-10-13 10:23:55,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:55,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743534474] [2020-10-13 10:23:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:23:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:57,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:57,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:57,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:57,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:57,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:57,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:57,577 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 10:23:57,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743534474] [2020-10-13 10:23:57,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:57,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:23:57,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621007083] [2020-10-13 10:23:57,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:23:57,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:57,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:23:57,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:57,579 INFO L87 Difference]: Start difference. First operand 668 states and 744 transitions. Second operand 19 states. [2020-10-13 10:24:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:00,050 INFO L93 Difference]: Finished difference Result 917 states and 1017 transitions. [2020-10-13 10:24:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:24:00,051 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-13 10:24:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:00,055 INFO L225 Difference]: With dead ends: 917 [2020-10-13 10:24:00,055 INFO L226 Difference]: Without dead ends: 905 [2020-10-13 10:24:00,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-10-13 10:24:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 737. [2020-10-13 10:24:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-10-13 10:24:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 816 transitions. [2020-10-13 10:24:00,138 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 816 transitions. Word has length 52 [2020-10-13 10:24:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:00,138 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 816 transitions. [2020-10-13 10:24:00,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 816 transitions. [2020-10-13 10:24:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:24:00,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:00,139 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 10:24:00,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 10:24:00,139 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:00,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1628237152, now seen corresponding path program 11 times [2020-10-13 10:24:00,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:00,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127783173] [2020-10-13 10:24:00,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:00,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:24:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-13 10:24:00,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:24:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:24:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:01,185 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-13 10:24:01,357 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-13 10:24:01,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:01,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:01,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:01,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:01,826 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 10:24:01,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127783173] [2020-10-13 10:24:01,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:01,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:24:01,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881849876] [2020-10-13 10:24:01,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:24:01,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:24:01,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:24:01,828 INFO L87 Difference]: Start difference. First operand 737 states and 816 transitions. Second operand 18 states. [2020-10-13 10:24:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:04,037 INFO L93 Difference]: Finished difference Result 852 states and 932 transitions. [2020-10-13 10:24:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:24:04,038 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-13 10:24:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:04,042 INFO L225 Difference]: With dead ends: 852 [2020-10-13 10:24:04,042 INFO L226 Difference]: Without dead ends: 737 [2020-10-13 10:24:04,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:24:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-13 10:24:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2020-10-13 10:24:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-10-13 10:24:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 811 transitions. [2020-10-13 10:24:04,107 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 811 transitions. Word has length 54 [2020-10-13 10:24:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:04,107 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 811 transitions. [2020-10-13 10:24:04,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:24:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 811 transitions. [2020-10-13 10:24:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:04,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:04,109 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 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 10:24:04,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 10:24:04,109 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1945569970, now seen corresponding path program 5 times [2020-10-13 10:24:04,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:04,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577267628] [2020-10-13 10:24:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:06,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:06,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:06,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1835 [2020-10-13 10:24:06,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:24:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:24:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:06,623 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-13 10:24:06,769 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-13 10:24:06,936 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-13 10:24:07,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:07,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:07,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:07,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:07,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:07,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:07,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:07,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:07,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577267628] [2020-10-13 10:24:07,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:07,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:24:07,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128048843] [2020-10-13 10:24:07,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:24:07,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:07,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:24:07,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:24:07,503 INFO L87 Difference]: Start difference. First operand 737 states and 811 transitions. Second operand 21 states. [2020-10-13 10:24:09,128 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-13 10:24:09,503 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-10-13 10:24:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:10,640 INFO L93 Difference]: Finished difference Result 852 states and 945 transitions. [2020-10-13 10:24:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:24:10,641 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-13 10:24:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:10,645 INFO L225 Difference]: With dead ends: 852 [2020-10-13 10:24:10,645 INFO L226 Difference]: Without dead ends: 850 [2020-10-13 10:24:10,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=112, Invalid=1148, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:24:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-13 10:24:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 626. [2020-10-13 10:24:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-13 10:24:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-13 10:24:10,702 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 55 [2020-10-13 10:24:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:10,702 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-13 10:24:10,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:24:10,702 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-13 10:24:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:10,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:10,703 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 10:24:10,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 10:24:10,703 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1325200268, now seen corresponding path program 7 times [2020-10-13 10:24:10,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:10,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867418192] [2020-10-13 10:24:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:10,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:11,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:11,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-13 10:24:11,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:24:11,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:12,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:12,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:12,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:12,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:12,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:12,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:12,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:12,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:12,508 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 10:24:12,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867418192] [2020-10-13 10:24:12,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:12,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:24:12,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549847198] [2020-10-13 10:24:12,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:24:12,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:12,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:24:12,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:24:12,509 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-13 10:24:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:16,030 INFO L93 Difference]: Finished difference Result 716 states and 783 transitions. [2020-10-13 10:24:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 10:24:16,030 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-13 10:24:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:16,034 INFO L225 Difference]: With dead ends: 716 [2020-10-13 10:24:16,034 INFO L226 Difference]: Without dead ends: 714 [2020-10-13 10:24:16,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:24:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-13 10:24:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 692. [2020-10-13 10:24:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-13 10:24:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 757 transitions. [2020-10-13 10:24:16,111 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 757 transitions. Word has length 55 [2020-10-13 10:24:16,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:16,111 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 757 transitions. [2020-10-13 10:24:16,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:24:16,112 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 757 transitions. [2020-10-13 10:24:16,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:16,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:16,113 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 10:24:16,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 10:24:16,113 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:16,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1854680864, now seen corresponding path program 13 times [2020-10-13 10:24:16,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:16,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064303329] [2020-10-13 10:24:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:16,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:18,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:24:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-13 10:24:18,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:18,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:24:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:18,918 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-13 10:24:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:19,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:19,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:19,368 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 10:24:19,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064303329] [2020-10-13 10:24:19,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:19,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:19,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796603709] [2020-10-13 10:24:19,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:19,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:19,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:19,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:19,369 INFO L87 Difference]: Start difference. First operand 692 states and 757 transitions. Second operand 19 states. [2020-10-13 10:24:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:21,676 INFO L93 Difference]: Finished difference Result 720 states and 787 transitions. [2020-10-13 10:24:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:24:21,677 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-13 10:24:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:21,679 INFO L225 Difference]: With dead ends: 720 [2020-10-13 10:24:21,679 INFO L226 Difference]: Without dead ends: 708 [2020-10-13 10:24:21,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:24:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-13 10:24:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 626. [2020-10-13 10:24:21,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-13 10:24:21,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-13 10:24:21,746 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 55 [2020-10-13 10:24:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:21,746 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-13 10:24:21,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-13 10:24:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:21,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:21,747 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 10:24:21,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 10:24:21,748 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:21,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:21,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1925750604, now seen corresponding path program 8 times [2020-10-13 10:24:21,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:21,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527693738] [2020-10-13 10:24:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:23,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:23,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:23,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:23,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1164 [2020-10-13 10:24:23,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:23,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:24:23,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:23,461 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-13 10:24:23,594 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-13 10:24:23,720 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-13 10:24:23,891 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-13 10:24:24,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:24,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:24,434 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 10:24:24,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527693738] [2020-10-13 10:24:24,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:24,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:24:24,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633558373] [2020-10-13 10:24:24,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:24:24,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:24,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:24:24,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:24:24,436 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-13 10:24:25,315 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-10-13 10:24:25,776 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-13 10:24:25,956 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-10-13 10:24:26,360 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 10:24:26,692 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-13 10:24:27,017 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-13 10:24:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:28,280 INFO L93 Difference]: Finished difference Result 802 states and 881 transitions. [2020-10-13 10:24:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:24:28,280 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-13 10:24:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:28,284 INFO L225 Difference]: With dead ends: 802 [2020-10-13 10:24:28,284 INFO L226 Difference]: Without dead ends: 789 [2020-10-13 10:24:28,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:24:28,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-10-13 10:24:28,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 559. [2020-10-13 10:24:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-13 10:24:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 622 transitions. [2020-10-13 10:24:28,358 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 622 transitions. Word has length 55 [2020-10-13 10:24:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:28,358 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 622 transitions. [2020-10-13 10:24:28,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:24:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 622 transitions. [2020-10-13 10:24:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:28,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:28,359 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 10:24:28,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 10:24:28,360 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:28,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1254130528, now seen corresponding path program 14 times [2020-10-13 10:24:28,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:28,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080154903] [2020-10-13 10:24:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:30,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2078 [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:24:30,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:31,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:31,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:31,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:31,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:31,425 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 10:24:31,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080154903] [2020-10-13 10:24:31,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:31,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:24:31,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023746787] [2020-10-13 10:24:31,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:24:31,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:31,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:24:31,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:24:31,427 INFO L87 Difference]: Start difference. First operand 559 states and 622 transitions. Second operand 21 states. [2020-10-13 10:24:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:34,892 INFO L93 Difference]: Finished difference Result 767 states and 833 transitions. [2020-10-13 10:24:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:34,893 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-13 10:24:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:34,897 INFO L225 Difference]: With dead ends: 767 [2020-10-13 10:24:34,897 INFO L226 Difference]: Without dead ends: 765 [2020-10-13 10:24:34,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 10:24:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-13 10:24:34,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 671. [2020-10-13 10:24:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-13 10:24:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 735 transitions. [2020-10-13 10:24:34,977 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 735 transitions. Word has length 55 [2020-10-13 10:24:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:34,977 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 735 transitions. [2020-10-13 10:24:34,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:24:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 735 transitions. [2020-10-13 10:24:34,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:24:34,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:34,979 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 10:24:34,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-13 10:24:34,979 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:34,980 INFO L82 PathProgramCache]: Analyzing trace with hash -825321566, now seen corresponding path program 15 times [2020-10-13 10:24:34,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:34,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368615320] [2020-10-13 10:24:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:35,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:35,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:35,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:24:35,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-13 10:24:35,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:24:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:35,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 10:24:35,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:36,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:36,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:36,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:36,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:36,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:36,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:36,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:36,349 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 10:24:36,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368615320] [2020-10-13 10:24:36,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:36,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:24:36,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935413352] [2020-10-13 10:24:36,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:24:36,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:36,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:24:36,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:36,350 INFO L87 Difference]: Start difference. First operand 671 states and 735 transitions. Second operand 19 states. [2020-10-13 10:24:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:38,743 INFO L93 Difference]: Finished difference Result 685 states and 750 transitions. [2020-10-13 10:24:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:24:38,744 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-13 10:24:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:38,747 INFO L225 Difference]: With dead ends: 685 [2020-10-13 10:24:38,747 INFO L226 Difference]: Without dead ends: 512 [2020-10-13 10:24:38,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:38,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-13 10:24:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-10-13 10:24:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-13 10:24:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 568 transitions. [2020-10-13 10:24:38,800 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 568 transitions. Word has length 55 [2020-10-13 10:24:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:38,800 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 568 transitions. [2020-10-13 10:24:38,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:24:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 568 transitions. [2020-10-13 10:24:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:24:38,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:38,801 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 10:24:38,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-13 10:24:38,801 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:38,802 INFO L82 PathProgramCache]: Analyzing trace with hash -915543304, now seen corresponding path program 12 times [2020-10-13 10:24:38,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:38,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195957128] [2020-10-13 10:24:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:40,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:24:40,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1287 [2020-10-13 10:24:40,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 10:24:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:40,602 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-13 10:24:40,773 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-13 10:24:40,965 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-13 10:24:41,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:41,462 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 10:24:41,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195957128] [2020-10-13 10:24:41,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:41,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:24:41,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721368958] [2020-10-13 10:24:41,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:24:41,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:41,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:24:41,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:24:41,463 INFO L87 Difference]: Start difference. First operand 512 states and 568 transitions. Second operand 21 states. [2020-10-13 10:24:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:45,641 INFO L93 Difference]: Finished difference Result 1226 states and 1340 transitions. [2020-10-13 10:24:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:24:45,642 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-13 10:24:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:45,646 INFO L225 Difference]: With dead ends: 1226 [2020-10-13 10:24:45,646 INFO L226 Difference]: Without dead ends: 1224 [2020-10-13 10:24:45,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 10:24:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-10-13 10:24:45,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 769. [2020-10-13 10:24:45,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-13 10:24:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 852 transitions. [2020-10-13 10:24:45,722 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 852 transitions. Word has length 57 [2020-10-13 10:24:45,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:45,722 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 852 transitions. [2020-10-13 10:24:45,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:24:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 852 transitions. [2020-10-13 10:24:45,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:24:45,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:45,723 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 10:24:45,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-13 10:24:45,724 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:45,724 INFO L82 PathProgramCache]: Analyzing trace with hash 456263994, now seen corresponding path program 16 times [2020-10-13 10:24:45,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:45,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899384137] [2020-10-13 10:24:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:46,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:24:46,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:46,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-13 10:24:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:24:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:46,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:24:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:47,416 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-13 10:24:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:48,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:48,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:48,051 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 10:24:48,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [899384137] [2020-10-13 10:24:48,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:48,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:24:48,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607732786] [2020-10-13 10:24:48,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:24:48,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:48,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:24:48,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:24:48,054 INFO L87 Difference]: Start difference. First operand 769 states and 852 transitions. Second operand 21 states. [2020-10-13 10:24:51,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:51,634 INFO L93 Difference]: Finished difference Result 1199 states and 1312 transitions. [2020-10-13 10:24:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:24:51,634 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-13 10:24:51,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:51,638 INFO L225 Difference]: With dead ends: 1199 [2020-10-13 10:24:51,639 INFO L226 Difference]: Without dead ends: 1187 [2020-10-13 10:24:51,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 10:24:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-13 10:24:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1058. [2020-10-13 10:24:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-13 10:24:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1155 transitions. [2020-10-13 10:24:51,760 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1155 transitions. Word has length 57 [2020-10-13 10:24:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:51,760 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1155 transitions. [2020-10-13 10:24:51,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:24:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1155 transitions. [2020-10-13 10:24:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:24:51,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:51,761 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 10:24:51,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-13 10:24:51,762 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:51,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:51,762 INFO L82 PathProgramCache]: Analyzing trace with hash 121940344, now seen corresponding path program 9 times [2020-10-13 10:24:51,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:51,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128483308] [2020-10-13 10:24:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:52,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:54,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:54,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:24:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2293 [2020-10-13 10:24:54,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:24:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 10:24:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:54,877 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-13 10:24:55,080 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2020-10-13 10:24:55,289 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-10-13 10:24:55,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:55,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:55,959 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 10:24:55,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128483308] [2020-10-13 10:24:55,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:55,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:24:55,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026147933] [2020-10-13 10:24:55,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:24:55,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:55,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:24:55,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:24:55,961 INFO L87 Difference]: Start difference. First operand 1058 states and 1155 transitions. Second operand 22 states. [2020-10-13 10:24:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:59,772 INFO L93 Difference]: Finished difference Result 1334 states and 1450 transitions. [2020-10-13 10:24:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:24:59,772 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-13 10:24:59,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:59,777 INFO L225 Difference]: With dead ends: 1334 [2020-10-13 10:24:59,777 INFO L226 Difference]: Without dead ends: 1332 [2020-10-13 10:24:59,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=117, Invalid=1365, Unknown=0, NotChecked=0, Total=1482 [2020-10-13 10:24:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-10-13 10:24:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1241. [2020-10-13 10:24:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-10-13 10:24:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1355 transitions. [2020-10-13 10:24:59,934 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1355 transitions. Word has length 58 [2020-10-13 10:24:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:59,934 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1355 transitions. [2020-10-13 10:24:59,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:24:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1355 transitions. [2020-10-13 10:24:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:24:59,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:59,936 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 10:24:59,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-13 10:24:59,936 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:59,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1237026508, now seen corresponding path program 17 times [2020-10-13 10:24:59,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:59,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55434419] [2020-10-13 10:24:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:02,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:03,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:03,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:25:03,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:25:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3660 [2020-10-13 10:25:03,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:03,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:25:03,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:04,105 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-13 10:25:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:04,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:04,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:04,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:04,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:04,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:04,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:04,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:04,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:04,828 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 10:25:04,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55434419] [2020-10-13 10:25:04,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:04,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:04,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424105091] [2020-10-13 10:25:04,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:04,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:04,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:04,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:04,829 INFO L87 Difference]: Start difference. First operand 1241 states and 1355 transitions. Second operand 21 states. [2020-10-13 10:25:05,966 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-13 10:25:06,382 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 10:25:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:09,002 INFO L93 Difference]: Finished difference Result 1398 states and 1535 transitions. [2020-10-13 10:25:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:25:09,003 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-13 10:25:09,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:09,009 INFO L225 Difference]: With dead ends: 1398 [2020-10-13 10:25:09,009 INFO L226 Difference]: Without dead ends: 1386 [2020-10-13 10:25:09,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=113, Invalid=1219, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 10:25:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-10-13 10:25:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1066. [2020-10-13 10:25:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-13 10:25:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1171 transitions. [2020-10-13 10:25:09,118 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1171 transitions. Word has length 58 [2020-10-13 10:25:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:09,118 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1171 transitions. [2020-10-13 10:25:09,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:09,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1171 transitions. [2020-10-13 10:25:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:25:09,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:09,120 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 10:25:09,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-13 10:25:09,120 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash -301706378, now seen corresponding path program 10 times [2020-10-13 10:25:09,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:09,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344167524] [2020-10-13 10:25:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:10,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:10,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:25:10,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-13 10:25:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 10:25:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:11,004 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-10-13 10:25:11,171 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-13 10:25:11,332 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-13 10:25:11,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:11,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:11,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:11,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:11,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:11,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:11,994 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 10:25:11,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344167524] [2020-10-13 10:25:11,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:11,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:11,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679669065] [2020-10-13 10:25:11,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:11,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:11,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:11,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:11,995 INFO L87 Difference]: Start difference. First operand 1066 states and 1171 transitions. Second operand 21 states. [2020-10-13 10:25:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:14,980 INFO L93 Difference]: Finished difference Result 1208 states and 1316 transitions. [2020-10-13 10:25:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:25:14,980 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-13 10:25:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:14,985 INFO L225 Difference]: With dead ends: 1208 [2020-10-13 10:25:14,985 INFO L226 Difference]: Without dead ends: 1195 [2020-10-13 10:25:14,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:25:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-13 10:25:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1000. [2020-10-13 10:25:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-13 10:25:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1103 transitions. [2020-10-13 10:25:15,091 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1103 transitions. Word has length 58 [2020-10-13 10:25:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:15,091 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1103 transitions. [2020-10-13 10:25:15,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1103 transitions. [2020-10-13 10:25:15,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:25:15,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:15,093 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 10:25:15,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-13 10:25:15,093 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:15,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:15,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1904247776, now seen corresponding path program 6 times [2020-10-13 10:25:15,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:15,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797999143] [2020-10-13 10:25:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:15,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1413 [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:25:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:17,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:17,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:17,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:17,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:17,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:17,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:17,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:17,588 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 10:25:17,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797999143] [2020-10-13 10:25:17,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:17,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:25:17,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484104788] [2020-10-13 10:25:17,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:25:17,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:17,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:25:17,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:25:17,590 INFO L87 Difference]: Start difference. First operand 1000 states and 1103 transitions. Second operand 22 states. [2020-10-13 10:25:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:22,681 INFO L93 Difference]: Finished difference Result 1377 states and 1511 transitions. [2020-10-13 10:25:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 10:25:22,682 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-10-13 10:25:22,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:22,687 INFO L225 Difference]: With dead ends: 1377 [2020-10-13 10:25:22,687 INFO L226 Difference]: Without dead ends: 1375 [2020-10-13 10:25:22,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:25:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-10-13 10:25:22,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 999. [2020-10-13 10:25:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-10-13 10:25:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1102 transitions. [2020-10-13 10:25:22,815 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1102 transitions. Word has length 60 [2020-10-13 10:25:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:22,815 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1102 transitions. [2020-10-13 10:25:22,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:25:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1102 transitions. [2020-10-13 10:25:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:25:22,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:22,817 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 10:25:22,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-13 10:25:22,817 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:22,817 INFO L82 PathProgramCache]: Analyzing trace with hash -789161612, now seen corresponding path program 13 times [2020-10-13 10:25:22,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:22,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991759444] [2020-10-13 10:25:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:24,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:25,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2597 [2020-10-13 10:25:25,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:25,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:25:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:25,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:25:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:26,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:26,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:26,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:26,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:26,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:26,416 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 10:25:26,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991759444] [2020-10-13 10:25:26,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:26,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:26,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814000072] [2020-10-13 10:25:26,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:26,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:26,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:26,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:26,418 INFO L87 Difference]: Start difference. First operand 999 states and 1102 transitions. Second operand 21 states. [2020-10-13 10:25:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:29,563 INFO L93 Difference]: Finished difference Result 1115 states and 1228 transitions. [2020-10-13 10:25:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:25:29,564 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 60 [2020-10-13 10:25:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:29,568 INFO L225 Difference]: With dead ends: 1115 [2020-10-13 10:25:29,568 INFO L226 Difference]: Without dead ends: 1103 [2020-10-13 10:25:29,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:25:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-10-13 10:25:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 888. [2020-10-13 10:25:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-10-13 10:25:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 990 transitions. [2020-10-13 10:25:29,667 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 990 transitions. Word has length 60 [2020-10-13 10:25:29,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:29,667 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 990 transitions. [2020-10-13 10:25:29,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 990 transitions. [2020-10-13 10:25:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:25:29,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:29,669 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 10:25:29,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-13 10:25:29,669 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:29,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:29,670 INFO L82 PathProgramCache]: Analyzing trace with hash 923538336, now seen corresponding path program 14 times [2020-10-13 10:25:29,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:29,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294936765] [2020-10-13 10:25:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:31,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1792 [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:25:31,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:32,170 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-13 10:25:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:32,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:32,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:32,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:32,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:32,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:32,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:32,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:32,704 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 10:25:32,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294936765] [2020-10-13 10:25:32,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:32,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:25:32,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592382069] [2020-10-13 10:25:32,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:25:32,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:32,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:25:32,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:25:32,705 INFO L87 Difference]: Start difference. First operand 888 states and 990 transitions. Second operand 23 states.