/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:38:09,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:38:09,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:38:09,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:38:09,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:38:09,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:38:09,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:38:09,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:38:09,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:38:09,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:38:09,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:38:09,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:38:09,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:38:09,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:38:09,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:38:09,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:38:09,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:38:09,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:38:09,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:38:09,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:38:09,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:38:09,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:38:09,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:38:09,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:38:09,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:38:09,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:38:09,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:38:09,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:38:09,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:38:09,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:38:09,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:38:09,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:38:09,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:38:09,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:38:09,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:38:09,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:38:09,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:38:09,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:38:09,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:38:09,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:38:09,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:38:09,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:38:10,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:38:10,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:38:10,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:38:10,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:38:10,023 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:38:10,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:38:10,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:38:10,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:38:10,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:38:10,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:38:10,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:38:10,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:38:10,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:38:10,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:38:10,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:38:10,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:38:10,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:38:10,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:38:10,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:38:10,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:38:10,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:38:10,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:38:10,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:38:10,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:38:10,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:38:10,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:38:10,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:38:10,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:38:10,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:38:10,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:38:10,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:38:10,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:38:10,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:38:10,358 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:38:10,361 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:38:10,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-12 15:38:10,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba21f22b/973e37802dd64b65810485ff8f974304/FLAG0364f8d5d [2020-10-12 15:38:10,965 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:38:10,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-sorted-1.i [2020-10-12 15:38:10,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba21f22b/973e37802dd64b65810485ff8f974304/FLAG0364f8d5d [2020-10-12 15:38:11,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cba21f22b/973e37802dd64b65810485ff8f974304 [2020-10-12 15:38:11,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:38:11,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:38:11,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:11,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:38:11,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:38:11,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:11,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68320178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11, skipping insertion in model container [2020-10-12 15:38:11,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:11,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:38:11,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:38:11,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:11,854 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:38:11,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:11,986 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:38:11,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11 WrapperNode [2020-10-12 15:38:11,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:11,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:38:11,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:38:11,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:38:11,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:11,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:12,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:12,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:12,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:12,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:12,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... [2020-10-12 15:38:12,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:38:12,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:38:12,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:38:12,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:38:12,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:38:12,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:38:12,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:38:12,115 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:38:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:38:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:38:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:38:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:38:12,115 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:38:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:38:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:38:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:38:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:38:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:38:12,116 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:38:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:38:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:38:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:38:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:38:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:38:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:38:12,117 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:38:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:38:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:38:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:38:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:38:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:38:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:38:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:38:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:38:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:38:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:38:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:38:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:38:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:38:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:38:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:38:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:38:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:38:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:38:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:38:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:38:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:38:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:38:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:38:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:38:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:38:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:38:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:38:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:38:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:38:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:38:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:38:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:38:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:38:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:38:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:38:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:38:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:38:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:38:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:38:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:38:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:38:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:38:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:38:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:38:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:38:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:38:12,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:38:12,745 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-12 15:38:12,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:12 BoogieIcfgContainer [2020-10-12 15:38:12,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:38:12,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:38:12,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:38:12,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:38:12,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:38:11" (1/3) ... [2020-10-12 15:38:12,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574dab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:12, skipping insertion in model container [2020-10-12 15:38:12,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:11" (2/3) ... [2020-10-12 15:38:12,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574dab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:12, skipping insertion in model container [2020-10-12 15:38:12,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:12" (3/3) ... [2020-10-12 15:38:12,771 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2020-10-12 15:38:12,782 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:38:12,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-12 15:38:12,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-12 15:38:12,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:38:12,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:38:12,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:38:12,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:38:12,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:38:12,850 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:38:12,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:38:12,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:38:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-12 15:38:12,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 15:38:12,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:12,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:12,897 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1780468538, now seen corresponding path program 1 times [2020-10-12 15:38:12,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:12,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880180205] [2020-10-12 15:38:12,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:13,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:13,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:13,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:38:13,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:13,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-12 15:38:13,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:38:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:38:13,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:38:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:13,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:13,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:13,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:38:13,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:13,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:13,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880180205] [2020-10-12 15:38:13,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:13,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:38:13,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619886796] [2020-10-12 15:38:13,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:38:13,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:13,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:38:13,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:38:13,444 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 5 states. [2020-10-12 15:38:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:13,724 INFO L93 Difference]: Finished difference Result 148 states and 242 transitions. [2020-10-12 15:38:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:38:13,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 15:38:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:13,738 INFO L225 Difference]: With dead ends: 148 [2020-10-12 15:38:13,738 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 15:38:13,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 15:38:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2020-10-12 15:38:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 15:38:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-10-12 15:38:13,793 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 10 [2020-10-12 15:38:13,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:13,793 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-10-12 15:38:13,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:38:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-10-12 15:38:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 15:38:13,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:13,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:13,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:38:13,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:13,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1194919943, now seen corresponding path program 1 times [2020-10-12 15:38:13,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:13,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787033687] [2020-10-12 15:38:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:14,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:14,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:38:14,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:38:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-12 15:38:14,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:38:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:14,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:14,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:14,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:14,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:14,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:14,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:14,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:14,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787033687] [2020-10-12 15:38:14,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:14,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:38:14,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322357937] [2020-10-12 15:38:14,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:38:14,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:14,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:38:14,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:14,383 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 6 states. [2020-10-12 15:38:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:14,675 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2020-10-12 15:38:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:38:14,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-12 15:38:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:14,678 INFO L225 Difference]: With dead ends: 114 [2020-10-12 15:38:14,678 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 15:38:14,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 15:38:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2020-10-12 15:38:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 15:38:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2020-10-12 15:38:14,692 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 21 [2020-10-12 15:38:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:14,693 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2020-10-12 15:38:14,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:38:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2020-10-12 15:38:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 15:38:14,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:14,694 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] [2020-10-12 15:38:14,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:38:14,695 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:14,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1414153713, now seen corresponding path program 1 times [2020-10-12 15:38:14,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:14,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59809812] [2020-10-12 15:38:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:14,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:14,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:14,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:38:14,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 15:38:14,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:14,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 15:38:14,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:14,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:14,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:14,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:14,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:14,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:14,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:14,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:14,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:38:14,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59809812] [2020-10-12 15:38:14,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:14,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 15:38:14,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259229163] [2020-10-12 15:38:14,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 15:38:14,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:14,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 15:38:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:14,879 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 6 states. [2020-10-12 15:38:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:15,094 INFO L93 Difference]: Finished difference Result 109 states and 131 transitions. [2020-10-12 15:38:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:38:15,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-12 15:38:15,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:15,096 INFO L225 Difference]: With dead ends: 109 [2020-10-12 15:38:15,096 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 15:38:15,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 15:38:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 15:38:15,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-12 15:38:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 15:38:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2020-10-12 15:38:15,106 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 24 [2020-10-12 15:38:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:15,106 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2020-10-12 15:38:15,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 15:38:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2020-10-12 15:38:15,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:38:15,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:15,108 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:15,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:38:15,108 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:15,109 INFO L82 PathProgramCache]: Analyzing trace with hash 186077840, now seen corresponding path program 1 times [2020-10-12 15:38:15,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:15,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477142410] [2020-10-12 15:38:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:15,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:38:15,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 15:38:15,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:15,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:15,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:15,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:15,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:15,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:15,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477142410] [2020-10-12 15:38:15,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:15,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:38:15,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503487003] [2020-10-12 15:38:15,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:38:15,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:15,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:38:15,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:38:15,245 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 4 states. [2020-10-12 15:38:15,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:15,357 INFO L93 Difference]: Finished difference Result 118 states and 142 transitions. [2020-10-12 15:38:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:38:15,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-12 15:38:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:15,358 INFO L225 Difference]: With dead ends: 118 [2020-10-12 15:38:15,358 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 15:38:15,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:38:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 15:38:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2020-10-12 15:38:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 15:38:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-12 15:38:15,366 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 25 [2020-10-12 15:38:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:15,367 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-12 15:38:15,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:38:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-12 15:38:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 15:38:15,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:15,368 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:15,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:38:15,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:15,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1774425742, now seen corresponding path program 1 times [2020-10-12 15:38:15,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:15,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668737133] [2020-10-12 15:38:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:15,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:38:15,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:15,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 15:38:15,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:38:15,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:15,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:38:15,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:15,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:15,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:15,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:15,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:15,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:15,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668737133] [2020-10-12 15:38:15,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:15,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:15,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163029774] [2020-10-12 15:38:15,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:15,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:15,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:15,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:15,724 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 9 states. [2020-10-12 15:38:16,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:16,139 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2020-10-12 15:38:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:38:16,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-12 15:38:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:16,141 INFO L225 Difference]: With dead ends: 110 [2020-10-12 15:38:16,141 INFO L226 Difference]: Without dead ends: 108 [2020-10-12 15:38:16,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:38:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-12 15:38:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 77. [2020-10-12 15:38:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 15:38:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-10-12 15:38:16,151 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 25 [2020-10-12 15:38:16,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:16,152 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-10-12 15:38:16,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-10-12 15:38:16,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:38:16,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:16,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:16,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:38:16,154 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:16,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:16,154 INFO L82 PathProgramCache]: Analyzing trace with hash -783280294, now seen corresponding path program 1 times [2020-10-12 15:38:16,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:16,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132615874] [2020-10-12 15:38:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:16,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:38:16,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:38:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-12 15:38:16,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:38:16,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:16,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:38:16,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:17,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:17,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:17,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:17,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:17,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-10-12 15:38:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:17,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132615874] [2020-10-12 15:38:17,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:17,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:17,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32710791] [2020-10-12 15:38:17,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:17,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:17,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:17,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:17,099 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 9 states. [2020-10-12 15:38:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:17,651 INFO L93 Difference]: Finished difference Result 141 states and 171 transitions. [2020-10-12 15:38:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:17,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-12 15:38:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:17,659 INFO L225 Difference]: With dead ends: 141 [2020-10-12 15:38:17,659 INFO L226 Difference]: Without dead ends: 101 [2020-10-12 15:38:17,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-12 15:38:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2020-10-12 15:38:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 15:38:17,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2020-10-12 15:38:17,688 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 28 [2020-10-12 15:38:17,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:17,688 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2020-10-12 15:38:17,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2020-10-12 15:38:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 15:38:17,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:17,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:17,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:38:17,694 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:17,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:17,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1592626920, now seen corresponding path program 1 times [2020-10-12 15:38:17,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:17,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252471707] [2020-10-12 15:38:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:17,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 15:38:18,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:18,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-12 15:38:18,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:38:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 15:38:18,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:18,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:18,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252471707] [2020-10-12 15:38:18,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:18,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:18,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608983923] [2020-10-12 15:38:18,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:18,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:18,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:18,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:18,755 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand 9 states. [2020-10-12 15:38:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:19,162 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2020-10-12 15:38:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:38:19,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-12 15:38:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:19,163 INFO L225 Difference]: With dead ends: 126 [2020-10-12 15:38:19,164 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 15:38:19,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 15:38:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2020-10-12 15:38:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 15:38:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2020-10-12 15:38:19,173 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 28 [2020-10-12 15:38:19,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:19,173 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2020-10-12 15:38:19,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:19,173 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2020-10-12 15:38:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:38:19,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:19,175 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:19,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:38:19,175 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash -538281373, now seen corresponding path program 1 times [2020-10-12 15:38:19,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:19,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754182658] [2020-10-12 15:38:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:19,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:38:19,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-12 15:38:19,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:38:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:19,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:19,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:19,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:19,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:19,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:19,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:19,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754182658] [2020-10-12 15:38:19,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:19,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:19,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486935176] [2020-10-12 15:38:19,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:19,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:19,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:19,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:19,728 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 10 states. [2020-10-12 15:38:20,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:20,196 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2020-10-12 15:38:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:20,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-12 15:38:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:20,198 INFO L225 Difference]: With dead ends: 184 [2020-10-12 15:38:20,198 INFO L226 Difference]: Without dead ends: 148 [2020-10-12 15:38:20,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-12 15:38:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 97. [2020-10-12 15:38:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 15:38:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 119 transitions. [2020-10-12 15:38:20,215 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 119 transitions. Word has length 29 [2020-10-12 15:38:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:20,216 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 119 transitions. [2020-10-12 15:38:20,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 119 transitions. [2020-10-12 15:38:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:38:20,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:20,217 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:20,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:38:20,218 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:20,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1347627999, now seen corresponding path program 1 times [2020-10-12 15:38:20,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:20,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610415416] [2020-10-12 15:38:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:38:21,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:21,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-12 15:38:21,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:38:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:38:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:21,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:21,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:21,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:21,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:21,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:21,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:21,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610415416] [2020-10-12 15:38:21,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:21,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:21,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468688133] [2020-10-12 15:38:21,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:21,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:21,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:21,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:21,146 INFO L87 Difference]: Start difference. First operand 97 states and 119 transitions. Second operand 9 states. [2020-10-12 15:38:21,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:21,496 INFO L93 Difference]: Finished difference Result 176 states and 212 transitions. [2020-10-12 15:38:21,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:38:21,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-12 15:38:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:21,498 INFO L225 Difference]: With dead ends: 176 [2020-10-12 15:38:21,498 INFO L226 Difference]: Without dead ends: 130 [2020-10-12 15:38:21,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-12 15:38:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-12 15:38:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 15:38:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2020-10-12 15:38:21,507 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 29 [2020-10-12 15:38:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:21,508 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2020-10-12 15:38:21,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2020-10-12 15:38:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 15:38:21,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:21,509 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] [2020-10-12 15:38:21,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:38:21,510 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:21,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1731682651, now seen corresponding path program 1 times [2020-10-12 15:38:21,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:21,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697794373] [2020-10-12 15:38:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 15:38:21,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 15:38:21,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:21,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:38:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:21,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697794373] [2020-10-12 15:38:21,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:21,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:21,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117725520] [2020-10-12 15:38:21,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:21,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:21,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:21,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:21,932 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand 11 states. [2020-10-12 15:38:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:22,516 INFO L93 Difference]: Finished difference Result 172 states and 209 transitions. [2020-10-12 15:38:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:38:22,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-10-12 15:38:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:22,518 INFO L225 Difference]: With dead ends: 172 [2020-10-12 15:38:22,519 INFO L226 Difference]: Without dead ends: 170 [2020-10-12 15:38:22,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:38:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-12 15:38:22,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 114. [2020-10-12 15:38:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 15:38:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2020-10-12 15:38:22,531 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 29 [2020-10-12 15:38:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:22,531 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2020-10-12 15:38:22,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2020-10-12 15:38:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:38:22,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:22,533 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:22,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:38:22,533 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:22,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:22,534 INFO L82 PathProgramCache]: Analyzing trace with hash 816547758, now seen corresponding path program 1 times [2020-10-12 15:38:22,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:22,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443612958] [2020-10-12 15:38:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:22,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:24,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:24,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:38:24,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:38:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2394 [2020-10-12 15:38:24,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:24,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:38:24,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:25,346 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-12 15:38:25,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:25,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443612958] [2020-10-12 15:38:25,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:25,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:25,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69539431] [2020-10-12 15:38:25,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:25,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:25,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:25,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:25,481 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand 12 states. [2020-10-12 15:38:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:26,369 INFO L93 Difference]: Finished difference Result 175 states and 211 transitions. [2020-10-12 15:38:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:26,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-12 15:38:26,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:26,371 INFO L225 Difference]: With dead ends: 175 [2020-10-12 15:38:26,371 INFO L226 Difference]: Without dead ends: 173 [2020-10-12 15:38:26,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:38:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-12 15:38:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 126. [2020-10-12 15:38:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-12 15:38:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 157 transitions. [2020-10-12 15:38:26,386 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 157 transitions. Word has length 31 [2020-10-12 15:38:26,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:26,386 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 157 transitions. [2020-10-12 15:38:26,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 157 transitions. [2020-10-12 15:38:26,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:38:26,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:26,388 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:26,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:38:26,388 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:26,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:26,389 INFO L82 PathProgramCache]: Analyzing trace with hash 7201132, now seen corresponding path program 1 times [2020-10-12 15:38:26,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:26,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20108447] [2020-10-12 15:38:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:26,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 15:38:26,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-12 15:38:26,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:38:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:26,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:26,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:26,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:26,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:26,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:26,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:38:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:26,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20108447] [2020-10-12 15:38:26,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:26,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:38:26,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990195673] [2020-10-12 15:38:26,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:38:26,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:26,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:38:26,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:26,928 INFO L87 Difference]: Start difference. First operand 126 states and 157 transitions. Second operand 10 states. [2020-10-12 15:38:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:27,496 INFO L93 Difference]: Finished difference Result 180 states and 216 transitions. [2020-10-12 15:38:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:27,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-12 15:38:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:27,499 INFO L225 Difference]: With dead ends: 180 [2020-10-12 15:38:27,499 INFO L226 Difference]: Without dead ends: 178 [2020-10-12 15:38:27,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-12 15:38:27,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 129. [2020-10-12 15:38:27,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 15:38:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 161 transitions. [2020-10-12 15:38:27,514 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 161 transitions. Word has length 31 [2020-10-12 15:38:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:27,514 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 161 transitions. [2020-10-12 15:38:27,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:38:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 161 transitions. [2020-10-12 15:38:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:38:27,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:27,515 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] [2020-10-12 15:38:27,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:38:27,516 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:27,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1224419173, now seen corresponding path program 1 times [2020-10-12 15:38:27,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:27,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820423812] [2020-10-12 15:38:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:38:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 15:38:27,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:38:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:28,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:28,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:28,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:28,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:28,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:28,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:28,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:28,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:28,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:28,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820423812] [2020-10-12 15:38:28,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:28,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:28,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169438315] [2020-10-12 15:38:28,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:28,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:28,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:28,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:28,022 INFO L87 Difference]: Start difference. First operand 129 states and 161 transitions. Second operand 11 states. [2020-10-12 15:38:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:28,881 INFO L93 Difference]: Finished difference Result 212 states and 264 transitions. [2020-10-12 15:38:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:28,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 15:38:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:28,883 INFO L225 Difference]: With dead ends: 212 [2020-10-12 15:38:28,883 INFO L226 Difference]: Without dead ends: 210 [2020-10-12 15:38:28,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:38:28,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-12 15:38:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 142. [2020-10-12 15:38:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-12 15:38:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2020-10-12 15:38:28,904 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 32 [2020-10-12 15:38:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:28,905 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2020-10-12 15:38:28,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2020-10-12 15:38:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:38:28,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:28,906 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:28,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:38:28,906 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:28,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:28,907 INFO L82 PathProgramCache]: Analyzing trace with hash -457314631, now seen corresponding path program 1 times [2020-10-12 15:38:28,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:28,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103844792] [2020-10-12 15:38:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:30,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:38:30,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:38:30,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1538 [2020-10-12 15:38:30,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:30,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:38:30,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:30,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:30,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:30,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:30,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:30,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:30,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:30,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:30,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:30,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:30,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103844792] [2020-10-12 15:38:30,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:30,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:30,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130125750] [2020-10-12 15:38:30,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:30,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:30,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:30,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:30,771 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand 12 states. [2020-10-12 15:38:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:31,569 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2020-10-12 15:38:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:38:31,570 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-12 15:38:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:31,571 INFO L225 Difference]: With dead ends: 225 [2020-10-12 15:38:31,572 INFO L226 Difference]: Without dead ends: 195 [2020-10-12 15:38:31,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:38:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-12 15:38:31,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 151. [2020-10-12 15:38:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-12 15:38:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 191 transitions. [2020-10-12 15:38:31,593 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 191 transitions. Word has length 32 [2020-10-12 15:38:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:31,594 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 191 transitions. [2020-10-12 15:38:31,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 191 transitions. [2020-10-12 15:38:31,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:38:31,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:31,597 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:31,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:38:31,597 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:31,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:31,598 INFO L82 PathProgramCache]: Analyzing trace with hash 222743739, now seen corresponding path program 1 times [2020-10-12 15:38:31,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:31,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188309758] [2020-10-12 15:38:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:31,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:38:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-12 15:38:31,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:31,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:38:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:32,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:32,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:32,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:32,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:32,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:32,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188309758] [2020-10-12 15:38:32,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:32,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:32,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347459159] [2020-10-12 15:38:32,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:32,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:32,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:32,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:32,290 INFO L87 Difference]: Start difference. First operand 151 states and 191 transitions. Second operand 11 states. [2020-10-12 15:38:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:32,840 INFO L93 Difference]: Finished difference Result 215 states and 260 transitions. [2020-10-12 15:38:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:38:32,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 15:38:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:32,842 INFO L225 Difference]: With dead ends: 215 [2020-10-12 15:38:32,842 INFO L226 Difference]: Without dead ends: 204 [2020-10-12 15:38:32,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:38:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-12 15:38:32,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 155. [2020-10-12 15:38:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-12 15:38:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 196 transitions. [2020-10-12 15:38:32,863 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 196 transitions. Word has length 32 [2020-10-12 15:38:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:32,863 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 196 transitions. [2020-10-12 15:38:32,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 196 transitions. [2020-10-12 15:38:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 15:38:32,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:32,865 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:32,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:38:32,865 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:32,866 INFO L82 PathProgramCache]: Analyzing trace with hash 280002041, now seen corresponding path program 1 times [2020-10-12 15:38:32,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:32,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078494070] [2020-10-12 15:38:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:32,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:33,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 15:38:33,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:38:33,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-10-12 15:38:33,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:33,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:33,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:38:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:33,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:33,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:33,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:33,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:33,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:33,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:33,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:34,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078494070] [2020-10-12 15:38:34,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:34,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:34,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654110210] [2020-10-12 15:38:34,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:34,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:34,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:34,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:34,006 INFO L87 Difference]: Start difference. First operand 155 states and 196 transitions. Second operand 11 states. [2020-10-12 15:38:34,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:34,534 INFO L93 Difference]: Finished difference Result 201 states and 245 transitions. [2020-10-12 15:38:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:38:34,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 15:38:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:34,536 INFO L225 Difference]: With dead ends: 201 [2020-10-12 15:38:34,536 INFO L226 Difference]: Without dead ends: 199 [2020-10-12 15:38:34,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:38:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-12 15:38:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 155. [2020-10-12 15:38:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-12 15:38:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 196 transitions. [2020-10-12 15:38:34,553 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 196 transitions. Word has length 32 [2020-10-12 15:38:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:34,554 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 196 transitions. [2020-10-12 15:38:34,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 196 transitions. [2020-10-12 15:38:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:38:34,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:34,555 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] [2020-10-12 15:38:34,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:38:34,555 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:34,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1570859960, now seen corresponding path program 2 times [2020-10-12 15:38:34,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:34,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828709381] [2020-10-12 15:38:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:34,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:34,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:38:34,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-12 15:38:34,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 15:38:34,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:35,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:35,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:35,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:35,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:35,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:35,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:35,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:35,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:35,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:35,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:35,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828709381] [2020-10-12 15:38:35,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:35,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:35,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284216268] [2020-10-12 15:38:35,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:35,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:35,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:35,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:35,061 INFO L87 Difference]: Start difference. First operand 155 states and 196 transitions. Second operand 11 states. [2020-10-12 15:38:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:35,617 INFO L93 Difference]: Finished difference Result 263 states and 331 transitions. [2020-10-12 15:38:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:35,618 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-12 15:38:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:35,620 INFO L225 Difference]: With dead ends: 263 [2020-10-12 15:38:35,620 INFO L226 Difference]: Without dead ends: 215 [2020-10-12 15:38:35,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:35,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-12 15:38:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 170. [2020-10-12 15:38:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-12 15:38:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 215 transitions. [2020-10-12 15:38:35,640 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 215 transitions. Word has length 33 [2020-10-12 15:38:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:35,640 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 215 transitions. [2020-10-12 15:38:35,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 215 transitions. [2020-10-12 15:38:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:38:35,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:35,641 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:35,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:38:35,642 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1669516016, now seen corresponding path program 1 times [2020-10-12 15:38:35,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:35,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275874108] [2020-10-12 15:38:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:36,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:36,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:38:36,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-12 15:38:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:38:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:36,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:36,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:36,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:36,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:36,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:36,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275874108] [2020-10-12 15:38:36,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:36,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:36,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85648050] [2020-10-12 15:38:36,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:36,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:36,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:36,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:36,557 INFO L87 Difference]: Start difference. First operand 170 states and 215 transitions. Second operand 11 states. [2020-10-12 15:38:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:37,410 INFO L93 Difference]: Finished difference Result 225 states and 273 transitions. [2020-10-12 15:38:37,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:38:37,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-12 15:38:37,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:37,413 INFO L225 Difference]: With dead ends: 225 [2020-10-12 15:38:37,413 INFO L226 Difference]: Without dead ends: 212 [2020-10-12 15:38:37,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:38:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-12 15:38:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 180. [2020-10-12 15:38:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-12 15:38:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 226 transitions. [2020-10-12 15:38:37,434 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 226 transitions. Word has length 33 [2020-10-12 15:38:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:37,435 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 226 transitions. [2020-10-12 15:38:37,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 226 transitions. [2020-10-12 15:38:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:38:37,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:37,436 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:37,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:38:37,436 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:37,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:37,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1863295020, now seen corresponding path program 1 times [2020-10-12 15:38:37,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:37,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341451058] [2020-10-12 15:38:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:37,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:38,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:39,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:40,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:40,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:38:40,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 15:38:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2820 [2020-10-12 15:38:40,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:38:40,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:40,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:40,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:40,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341451058] [2020-10-12 15:38:40,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:40,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:40,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053982] [2020-10-12 15:38:40,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:40,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:40,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:40,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:40,600 INFO L87 Difference]: Start difference. First operand 180 states and 226 transitions. Second operand 12 states. [2020-10-12 15:38:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:41,413 INFO L93 Difference]: Finished difference Result 215 states and 264 transitions. [2020-10-12 15:38:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:38:41,413 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-12 15:38:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:41,415 INFO L225 Difference]: With dead ends: 215 [2020-10-12 15:38:41,415 INFO L226 Difference]: Without dead ends: 182 [2020-10-12 15:38:41,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:38:41,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-12 15:38:41,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 171. [2020-10-12 15:38:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-12 15:38:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 214 transitions. [2020-10-12 15:38:41,428 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 214 transitions. Word has length 33 [2020-10-12 15:38:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:41,429 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 214 transitions. [2020-10-12 15:38:41,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:41,429 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 214 transitions. [2020-10-12 15:38:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 15:38:41,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:41,430 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] [2020-10-12 15:38:41,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:38:41,430 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:41,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:41,431 INFO L82 PathProgramCache]: Analyzing trace with hash 793625404, now seen corresponding path program 2 times [2020-10-12 15:38:41,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:41,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988619000] [2020-10-12 15:38:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:38:41,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-12 15:38:41,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:38:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:41,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:38:41,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:41,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:41,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:41,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988619000] [2020-10-12 15:38:41,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:41,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:41,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15477048] [2020-10-12 15:38:41,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:41,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:41,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:41,959 INFO L87 Difference]: Start difference. First operand 171 states and 214 transitions. Second operand 12 states. [2020-10-12 15:38:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:42,785 INFO L93 Difference]: Finished difference Result 281 states and 356 transitions. [2020-10-12 15:38:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:38:42,785 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-12 15:38:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:42,789 INFO L225 Difference]: With dead ends: 281 [2020-10-12 15:38:42,789 INFO L226 Difference]: Without dead ends: 279 [2020-10-12 15:38:42,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:38:42,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-12 15:38:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 184. [2020-10-12 15:38:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-12 15:38:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 231 transitions. [2020-10-12 15:38:42,806 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 231 transitions. Word has length 33 [2020-10-12 15:38:42,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:42,806 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 231 transitions. [2020-10-12 15:38:42,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:42,806 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 231 transitions. [2020-10-12 15:38:42,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:38:42,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:42,807 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:42,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:38:42,807 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:42,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:42,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1500845987, now seen corresponding path program 1 times [2020-10-12 15:38:42,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:42,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892503169] [2020-10-12 15:38:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:42,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:43,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:43,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:38:43,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:38:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-12 15:38:43,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:38:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:38:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:43,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:43,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:43,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:43,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:43,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:43,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:38:43,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892503169] [2020-10-12 15:38:43,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:43,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:38:43,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130671406] [2020-10-12 15:38:43,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:38:43,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:43,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:38:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:38:43,372 INFO L87 Difference]: Start difference. First operand 184 states and 231 transitions. Second operand 7 states. [2020-10-12 15:38:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:43,625 INFO L93 Difference]: Finished difference Result 252 states and 311 transitions. [2020-10-12 15:38:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:38:43,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-12 15:38:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:43,627 INFO L225 Difference]: With dead ends: 252 [2020-10-12 15:38:43,627 INFO L226 Difference]: Without dead ends: 215 [2020-10-12 15:38:43,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:38:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-12 15:38:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 180. [2020-10-12 15:38:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-12 15:38:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 224 transitions. [2020-10-12 15:38:43,643 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 224 transitions. Word has length 34 [2020-10-12 15:38:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:43,643 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 224 transitions. [2020-10-12 15:38:43,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:38:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 224 transitions. [2020-10-12 15:38:43,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:38:43,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:43,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:43,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:38:43,645 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash -237750214, now seen corresponding path program 1 times [2020-10-12 15:38:43,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:43,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871680251] [2020-10-12 15:38:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:43,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:43,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:38:43,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-12 15:38:43,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:38:43,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:44,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:44,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871680251] [2020-10-12 15:38:44,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:44,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:44,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992696991] [2020-10-12 15:38:44,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:44,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:44,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:44,276 INFO L87 Difference]: Start difference. First operand 180 states and 224 transitions. Second operand 12 states. [2020-10-12 15:38:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:44,930 INFO L93 Difference]: Finished difference Result 340 states and 408 transitions. [2020-10-12 15:38:44,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:38:44,933 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-12 15:38:44,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:44,935 INFO L225 Difference]: With dead ends: 340 [2020-10-12 15:38:44,935 INFO L226 Difference]: Without dead ends: 338 [2020-10-12 15:38:44,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:38:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-12 15:38:44,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 193. [2020-10-12 15:38:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-12 15:38:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 243 transitions. [2020-10-12 15:38:44,954 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 243 transitions. Word has length 34 [2020-10-12 15:38:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:44,954 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 243 transitions. [2020-10-12 15:38:44,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 243 transitions. [2020-10-12 15:38:44,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 15:38:44,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:44,955 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:44,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:38:44,956 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:44,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1047096840, now seen corresponding path program 1 times [2020-10-12 15:38:44,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:44,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543123887] [2020-10-12 15:38:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:44,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 15:38:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:38:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1931 [2020-10-12 15:38:46,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:38:46,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:47,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:47,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:47,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:38:47,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543123887] [2020-10-12 15:38:47,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:47,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:47,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765368798] [2020-10-12 15:38:47,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:47,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:47,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:47,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:47,289 INFO L87 Difference]: Start difference. First operand 193 states and 243 transitions. Second operand 12 states. [2020-10-12 15:38:48,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:48,280 INFO L93 Difference]: Finished difference Result 277 states and 334 transitions. [2020-10-12 15:38:48,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:38:48,281 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-12 15:38:48,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:48,283 INFO L225 Difference]: With dead ends: 277 [2020-10-12 15:38:48,283 INFO L226 Difference]: Without dead ends: 242 [2020-10-12 15:38:48,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:38:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-12 15:38:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 195. [2020-10-12 15:38:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-12 15:38:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 245 transitions. [2020-10-12 15:38:48,306 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 245 transitions. Word has length 34 [2020-10-12 15:38:48,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:48,306 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 245 transitions. [2020-10-12 15:38:48,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 245 transitions. [2020-10-12 15:38:48,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:38:48,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:48,307 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-12 15:38:48,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 15:38:48,308 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:48,308 INFO L82 PathProgramCache]: Analyzing trace with hash -728743133, now seen corresponding path program 2 times [2020-10-12 15:38:48,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:48,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424759134] [2020-10-12 15:38:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:48,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:49,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:49,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:38:49,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:38:49,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-10-12 15:38:49,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:49,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:38:49,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:49,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:49,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424759134] [2020-10-12 15:38:49,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:49,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:49,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757303568] [2020-10-12 15:38:49,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:49,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:49,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:49,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:49,638 INFO L87 Difference]: Start difference. First operand 195 states and 245 transitions. Second operand 11 states. [2020-10-12 15:38:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:50,387 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2020-10-12 15:38:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:38:50,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-12 15:38:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:50,389 INFO L225 Difference]: With dead ends: 277 [2020-10-12 15:38:50,390 INFO L226 Difference]: Without dead ends: 223 [2020-10-12 15:38:50,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-12 15:38:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-12 15:38:50,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 197. [2020-10-12 15:38:50,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-12 15:38:50,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 247 transitions. [2020-10-12 15:38:50,406 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 247 transitions. Word has length 35 [2020-10-12 15:38:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:50,406 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 247 transitions. [2020-10-12 15:38:50,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 247 transitions. [2020-10-12 15:38:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:38:50,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:50,407 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] [2020-10-12 15:38:50,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 15:38:50,407 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:50,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1538089759, now seen corresponding path program 1 times [2020-10-12 15:38:50,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:50,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323014200] [2020-10-12 15:38:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:50,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:51,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:38:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 773 [2020-10-12 15:38:51,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:38:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:51,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:51,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:51,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:51,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:51,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:51,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:51,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:51,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:51,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323014200] [2020-10-12 15:38:51,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:51,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:51,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586393053] [2020-10-12 15:38:51,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:51,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:51,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:51,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:51,345 INFO L87 Difference]: Start difference. First operand 197 states and 247 transitions. Second operand 11 states. [2020-10-12 15:38:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:52,114 INFO L93 Difference]: Finished difference Result 250 states and 306 transitions. [2020-10-12 15:38:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 15:38:52,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2020-10-12 15:38:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:52,117 INFO L225 Difference]: With dead ends: 250 [2020-10-12 15:38:52,117 INFO L226 Difference]: Without dead ends: 212 [2020-10-12 15:38:52,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:38:52,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-12 15:38:52,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 201. [2020-10-12 15:38:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-12 15:38:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 251 transitions. [2020-10-12 15:38:52,134 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 251 transitions. Word has length 35 [2020-10-12 15:38:52,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:52,134 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 251 transitions. [2020-10-12 15:38:52,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 251 transitions. [2020-10-12 15:38:52,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:38:52,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:52,135 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:52,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 15:38:52,136 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1219186605, now seen corresponding path program 1 times [2020-10-12 15:38:52,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:52,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206495558] [2020-10-12 15:38:52,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:52,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:38:52,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:38:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-12 15:38:52,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:52,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:38:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:52,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:52,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:52,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:52,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:52,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206495558] [2020-10-12 15:38:52,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:52,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:52,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918463708] [2020-10-12 15:38:52,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:52,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:52,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:52,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:52,809 INFO L87 Difference]: Start difference. First operand 201 states and 251 transitions. Second operand 12 states. [2020-10-12 15:38:53,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:53,403 INFO L93 Difference]: Finished difference Result 329 states and 392 transitions. [2020-10-12 15:38:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:53,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-12 15:38:53,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:53,407 INFO L225 Difference]: With dead ends: 329 [2020-10-12 15:38:53,407 INFO L226 Difference]: Without dead ends: 327 [2020-10-12 15:38:53,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:38:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-12 15:38:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 215. [2020-10-12 15:38:53,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-12 15:38:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 270 transitions. [2020-10-12 15:38:53,430 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 270 transitions. Word has length 35 [2020-10-12 15:38:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:53,430 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 270 transitions. [2020-10-12 15:38:53,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 270 transitions. [2020-10-12 15:38:53,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:38:53,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:53,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:53,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 15:38:53,432 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:53,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1899244975, now seen corresponding path program 1 times [2020-10-12 15:38:53,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:53,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695505279] [2020-10-12 15:38:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:53,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:53,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:55,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:55,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:58,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:58,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:38:58,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 15:38:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4661 [2020-10-12 15:38:58,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:38:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:58,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:38:58,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:58,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:58,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:58,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:58,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:38:58,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695505279] [2020-10-12 15:38:58,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:58,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:58,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026260073] [2020-10-12 15:38:58,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:58,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:58,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:58,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:58,489 INFO L87 Difference]: Start difference. First operand 215 states and 270 transitions. Second operand 12 states. [2020-10-12 15:38:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:59,577 INFO L93 Difference]: Finished difference Result 267 states and 326 transitions. [2020-10-12 15:38:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:59,578 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-12 15:38:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:59,579 INFO L225 Difference]: With dead ends: 267 [2020-10-12 15:38:59,579 INFO L226 Difference]: Without dead ends: 265 [2020-10-12 15:38:59,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:38:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-12 15:38:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 220. [2020-10-12 15:38:59,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-12 15:38:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 276 transitions. [2020-10-12 15:38:59,597 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 276 transitions. Word has length 35 [2020-10-12 15:38:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:59,598 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 276 transitions. [2020-10-12 15:38:59,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 276 transitions. [2020-10-12 15:38:59,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:38:59,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:59,599 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, 1, 1, 1, 1, 1] [2020-10-12 15:38:59,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 15:38:59,599 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:59,599 INFO L82 PathProgramCache]: Analyzing trace with hash 171719747, now seen corresponding path program 1 times [2020-10-12 15:38:59,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:59,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41222039] [2020-10-12 15:38:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:59,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:59,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:38:59,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:59,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-12 15:38:59,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:38:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:59,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:38:59,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:00,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:00,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:00,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:00,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:39:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:00,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41222039] [2020-10-12 15:39:00,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:00,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:00,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4897766] [2020-10-12 15:39:00,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:00,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:00,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:00,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:00,413 INFO L87 Difference]: Start difference. First operand 220 states and 276 transitions. Second operand 12 states. [2020-10-12 15:39:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:01,489 INFO L93 Difference]: Finished difference Result 364 states and 458 transitions. [2020-10-12 15:39:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:39:01,490 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-12 15:39:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:01,493 INFO L225 Difference]: With dead ends: 364 [2020-10-12 15:39:01,493 INFO L226 Difference]: Without dead ends: 362 [2020-10-12 15:39:01,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:39:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-12 15:39:01,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 250. [2020-10-12 15:39:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-12 15:39:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 317 transitions. [2020-10-12 15:39:01,517 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 317 transitions. Word has length 35 [2020-10-12 15:39:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:01,517 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 317 transitions. [2020-10-12 15:39:01,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 317 transitions. [2020-10-12 15:39:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:39:01,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:01,518 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:01,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 15:39:01,519 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:01,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:01,519 INFO L82 PathProgramCache]: Analyzing trace with hash -717669904, now seen corresponding path program 3 times [2020-10-12 15:39:01,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:01,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584373548] [2020-10-12 15:39:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:01,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:39:01,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:01,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:01,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:01,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:01,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:01,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:39:01,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:01,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:01,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:01,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584373548] [2020-10-12 15:39:01,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:01,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:01,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704845630] [2020-10-12 15:39:01,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:01,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:01,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:01,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:01,973 INFO L87 Difference]: Start difference. First operand 250 states and 317 transitions. Second operand 12 states. [2020-10-12 15:39:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:02,665 INFO L93 Difference]: Finished difference Result 389 states and 481 transitions. [2020-10-12 15:39:02,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:39:02,666 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-12 15:39:02,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:02,668 INFO L225 Difference]: With dead ends: 389 [2020-10-12 15:39:02,668 INFO L226 Difference]: Without dead ends: 336 [2020-10-12 15:39:02,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:39:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-10-12 15:39:02,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 267. [2020-10-12 15:39:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-12 15:39:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 338 transitions. [2020-10-12 15:39:02,692 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 338 transitions. Word has length 36 [2020-10-12 15:39:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:02,692 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 338 transitions. [2020-10-12 15:39:02,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:02,692 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 338 transitions. [2020-10-12 15:39:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:39:02,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:02,693 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-12 15:39:02,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 15:39:02,694 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:02,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:02,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1527016530, now seen corresponding path program 2 times [2020-10-12 15:39:02,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:02,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82095082] [2020-10-12 15:39:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:02,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:39:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:39:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-12 15:39:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:39:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:39:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:03,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:03,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:03,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:03,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:03,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:03,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:03,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82095082] [2020-10-12 15:39:03,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:03,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:39:03,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058080835] [2020-10-12 15:39:03,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:39:03,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:03,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:39:03,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:39:03,792 INFO L87 Difference]: Start difference. First operand 267 states and 338 transitions. Second operand 11 states. [2020-10-12 15:39:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:04,319 INFO L93 Difference]: Finished difference Result 374 states and 460 transitions. [2020-10-12 15:39:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:39:04,320 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-12 15:39:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:04,322 INFO L225 Difference]: With dead ends: 374 [2020-10-12 15:39:04,323 INFO L226 Difference]: Without dead ends: 311 [2020-10-12 15:39:04,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:04,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-12 15:39:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 265. [2020-10-12 15:39:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-12 15:39:04,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 333 transitions. [2020-10-12 15:39:04,347 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 333 transitions. Word has length 36 [2020-10-12 15:39:04,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:04,348 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 333 transitions. [2020-10-12 15:39:04,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:39:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 333 transitions. [2020-10-12 15:39:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:39:04,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:04,349 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:04,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 15:39:04,349 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:04,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:04,350 INFO L82 PathProgramCache]: Analyzing trace with hash 404133486, now seen corresponding path program 4 times [2020-10-12 15:39:04,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:04,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107013789] [2020-10-12 15:39:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:04,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:39:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:04,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:04,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:04,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:04,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:39:04,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:04,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107013789] [2020-10-12 15:39:04,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:04,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:04,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211092225] [2020-10-12 15:39:04,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:04,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:04,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:04,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:04,843 INFO L87 Difference]: Start difference. First operand 265 states and 333 transitions. Second operand 13 states. [2020-10-12 15:39:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:05,695 INFO L93 Difference]: Finished difference Result 339 states and 427 transitions. [2020-10-12 15:39:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:05,696 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-12 15:39:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:05,698 INFO L225 Difference]: With dead ends: 339 [2020-10-12 15:39:05,698 INFO L226 Difference]: Without dead ends: 337 [2020-10-12 15:39:05,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:39:05,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-12 15:39:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 287. [2020-10-12 15:39:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-12 15:39:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 361 transitions. [2020-10-12 15:39:05,722 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 361 transitions. Word has length 36 [2020-10-12 15:39:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:05,722 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 361 transitions. [2020-10-12 15:39:05,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 361 transitions. [2020-10-12 15:39:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:39:05,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:05,723 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:05,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 15:39:05,724 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:05,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash -844558242, now seen corresponding path program 1 times [2020-10-12 15:39:05,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:05,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721918941] [2020-10-12 15:39:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:06,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:06,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:39:06,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:39:06,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-12 15:39:06,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:39:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:39:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:06,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:06,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:06,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:06,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:06,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:06,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:06,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:06,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:06,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721918941] [2020-10-12 15:39:06,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:06,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:06,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721354806] [2020-10-12 15:39:06,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:06,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:06,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:06,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:06,246 INFO L87 Difference]: Start difference. First operand 287 states and 361 transitions. Second operand 12 states. [2020-10-12 15:39:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:06,965 INFO L93 Difference]: Finished difference Result 375 states and 455 transitions. [2020-10-12 15:39:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:06,965 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-12 15:39:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:06,968 INFO L225 Difference]: With dead ends: 375 [2020-10-12 15:39:06,968 INFO L226 Difference]: Without dead ends: 362 [2020-10-12 15:39:06,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:39:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-12 15:39:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 302. [2020-10-12 15:39:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-12 15:39:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 379 transitions. [2020-10-12 15:39:06,994 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 379 transitions. Word has length 36 [2020-10-12 15:39:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:06,995 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 379 transitions. [2020-10-12 15:39:06,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 379 transitions. [2020-10-12 15:39:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:39:06,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:06,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:06,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 15:39:06,996 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:06,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1237585252, now seen corresponding path program 1 times [2020-10-12 15:39:06,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:06,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50004421] [2020-10-12 15:39:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:07,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:09,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:09,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:39:09,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 15:39:09,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2204 [2020-10-12 15:39:09,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:09,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:39:09,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:09,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:39:09,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:09,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:09,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:09,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:09,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:39:09,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50004421] [2020-10-12 15:39:09,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:09,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:09,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963546797] [2020-10-12 15:39:09,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:09,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:09,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:09,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:09,553 INFO L87 Difference]: Start difference. First operand 302 states and 379 transitions. Second operand 12 states. [2020-10-12 15:39:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:10,622 INFO L93 Difference]: Finished difference Result 367 states and 448 transitions. [2020-10-12 15:39:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:39:10,622 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-12 15:39:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:10,627 INFO L225 Difference]: With dead ends: 367 [2020-10-12 15:39:10,628 INFO L226 Difference]: Without dead ends: 354 [2020-10-12 15:39:10,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:39:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-12 15:39:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2020-10-12 15:39:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-12 15:39:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 388 transitions. [2020-10-12 15:39:10,661 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 388 transitions. Word has length 36 [2020-10-12 15:39:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:10,661 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 388 transitions. [2020-10-12 15:39:10,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 388 transitions. [2020-10-12 15:39:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:39:10,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:10,663 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, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:10,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 15:39:10,664 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:10,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1027853508, now seen corresponding path program 1 times [2020-10-12 15:39:10,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:10,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027731341] [2020-10-12 15:39:10,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:11,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:11,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 15:39:11,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-12 15:39:11,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:39:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:11,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:39:11,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:11,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:11,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:11,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:11,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:11,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:11,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:11,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:11,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027731341] [2020-10-12 15:39:11,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:11,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:11,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802079668] [2020-10-12 15:39:11,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:11,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:11,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:11,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:11,695 INFO L87 Difference]: Start difference. First operand 309 states and 388 transitions. Second operand 12 states. [2020-10-12 15:39:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:12,708 INFO L93 Difference]: Finished difference Result 419 states and 523 transitions. [2020-10-12 15:39:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:39:12,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-12 15:39:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:12,712 INFO L225 Difference]: With dead ends: 419 [2020-10-12 15:39:12,712 INFO L226 Difference]: Without dead ends: 408 [2020-10-12 15:39:12,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:39:12,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-12 15:39:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 313. [2020-10-12 15:39:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-12 15:39:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 392 transitions. [2020-10-12 15:39:12,744 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 392 transitions. Word has length 36 [2020-10-12 15:39:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:12,744 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 392 transitions. [2020-10-12 15:39:12,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 392 transitions. [2020-10-12 15:39:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:39:12,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:12,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:12,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 15:39:12,746 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash -887612143, now seen corresponding path program 1 times [2020-10-12 15:39:12,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:12,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375611911] [2020-10-12 15:39:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:12,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:13,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:13,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:13,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:39:13,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:39:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-12 15:39:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:39:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:39:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:13,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:13,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:13,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:13,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:13,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375611911] [2020-10-12 15:39:13,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:13,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:13,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978708091] [2020-10-12 15:39:13,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:13,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:13,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:13,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:13,567 INFO L87 Difference]: Start difference. First operand 313 states and 392 transitions. Second operand 12 states. [2020-10-12 15:39:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:14,099 INFO L93 Difference]: Finished difference Result 421 states and 506 transitions. [2020-10-12 15:39:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 15:39:14,100 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-12 15:39:14,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:14,102 INFO L225 Difference]: With dead ends: 421 [2020-10-12 15:39:14,102 INFO L226 Difference]: Without dead ends: 402 [2020-10-12 15:39:14,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-10-12 15:39:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 306. [2020-10-12 15:39:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 15:39:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2020-10-12 15:39:14,131 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 37 [2020-10-12 15:39:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:14,131 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2020-10-12 15:39:14,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2020-10-12 15:39:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:39:14,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:14,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:14,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 15:39:14,133 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:14,134 INFO L82 PathProgramCache]: Analyzing trace with hash -186547565, now seen corresponding path program 1 times [2020-10-12 15:39:14,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:14,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884445579] [2020-10-12 15:39:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:14,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:39:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 15:39:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 15:39:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:39:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:39:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:19,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:39:19,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884445579] [2020-10-12 15:39:19,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:19,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:19,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253901767] [2020-10-12 15:39:19,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:19,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:19,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:19,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:19,464 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand 12 states. [2020-10-12 15:39:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:20,349 INFO L93 Difference]: Finished difference Result 340 states and 419 transitions. [2020-10-12 15:39:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:20,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-12 15:39:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:20,352 INFO L225 Difference]: With dead ends: 340 [2020-10-12 15:39:20,352 INFO L226 Difference]: Without dead ends: 333 [2020-10-12 15:39:20,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:39:20,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-12 15:39:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 299. [2020-10-12 15:39:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-12 15:39:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 376 transitions. [2020-10-12 15:39:20,381 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 376 transitions. Word has length 37 [2020-10-12 15:39:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:20,382 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 376 transitions. [2020-10-12 15:39:20,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 376 transitions. [2020-10-12 15:39:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:39:20,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:20,383 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:20,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 15:39:20,384 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2087889943, now seen corresponding path program 1 times [2020-10-12 15:39:20,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:20,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280863307] [2020-10-12 15:39:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:20,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:21,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:25,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:39:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 15:39:25,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 15:39:25,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:25,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:39:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:25,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:25,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:25,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:25,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:25,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:25,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:25,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280863307] [2020-10-12 15:39:25,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:25,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:25,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929301554] [2020-10-12 15:39:25,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:25,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:25,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:25,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:25,749 INFO L87 Difference]: Start difference. First operand 299 states and 376 transitions. Second operand 13 states. [2020-10-12 15:39:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:26,620 INFO L93 Difference]: Finished difference Result 404 states and 493 transitions. [2020-10-12 15:39:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:26,621 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-12 15:39:26,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:26,623 INFO L225 Difference]: With dead ends: 404 [2020-10-12 15:39:26,623 INFO L226 Difference]: Without dead ends: 374 [2020-10-12 15:39:26,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:39:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-10-12 15:39:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 310. [2020-10-12 15:39:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-12 15:39:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 390 transitions. [2020-10-12 15:39:26,654 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 390 transitions. Word has length 37 [2020-10-12 15:39:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:26,654 INFO L479 AbstractCegarLoop]: Abstraction has 310 states and 390 transitions. [2020-10-12 15:39:26,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 390 transitions. [2020-10-12 15:39:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:39:26,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:26,655 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:26,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 15:39:26,656 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:26,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:26,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1814050343, now seen corresponding path program 1 times [2020-10-12 15:39:26,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:26,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950282817] [2020-10-12 15:39:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:27,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:27,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:39:27,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:27,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-12 15:39:27,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:39:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:27,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:39:27,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:27,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:27,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:27,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:27,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:27,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950282817] [2020-10-12 15:39:27,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:27,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:27,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760750492] [2020-10-12 15:39:27,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:27,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:27,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:27,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:27,502 INFO L87 Difference]: Start difference. First operand 310 states and 390 transitions. Second operand 12 states. [2020-10-12 15:39:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:29,010 INFO L93 Difference]: Finished difference Result 415 states and 521 transitions. [2020-10-12 15:39:29,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:39:29,010 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-12 15:39:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:29,013 INFO L225 Difference]: With dead ends: 415 [2020-10-12 15:39:29,013 INFO L226 Difference]: Without dead ends: 413 [2020-10-12 15:39:29,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=232, Invalid=698, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:39:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-10-12 15:39:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 301. [2020-10-12 15:39:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-12 15:39:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 380 transitions. [2020-10-12 15:39:29,037 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 380 transitions. Word has length 37 [2020-10-12 15:39:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:29,037 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 380 transitions. [2020-10-12 15:39:29,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 380 transitions. [2020-10-12 15:39:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 15:39:29,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:29,038 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:29,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 15:39:29,038 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash -17775533, now seen corresponding path program 3 times [2020-10-12 15:39:29,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:29,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111462544] [2020-10-12 15:39:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:29,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:29,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:29,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:39:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 15:39:29,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:39:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:29,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:29,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:29,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:29,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:29,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111462544] [2020-10-12 15:39:29,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:29,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:29,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258532423] [2020-10-12 15:39:29,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:29,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:29,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:29,530 INFO L87 Difference]: Start difference. First operand 301 states and 380 transitions. Second operand 13 states. [2020-10-12 15:39:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:30,257 INFO L93 Difference]: Finished difference Result 398 states and 495 transitions. [2020-10-12 15:39:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:39:30,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-12 15:39:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:30,263 INFO L225 Difference]: With dead ends: 398 [2020-10-12 15:39:30,263 INFO L226 Difference]: Without dead ends: 396 [2020-10-12 15:39:30,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:39:30,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-12 15:39:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 296. [2020-10-12 15:39:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-12 15:39:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 372 transitions. [2020-10-12 15:39:30,291 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 372 transitions. Word has length 37 [2020-10-12 15:39:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:30,291 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 372 transitions. [2020-10-12 15:39:30,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 372 transitions. [2020-10-12 15:39:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:39:30,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:30,293 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:30,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 15:39:30,293 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:30,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1226126595, now seen corresponding path program 1 times [2020-10-12 15:39:30,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:30,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475620482] [2020-10-12 15:39:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:30,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:39:30,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 15:39:30,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:39:30,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:30,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:30,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:30,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:30,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:30,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:39:30,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475620482] [2020-10-12 15:39:30,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:30,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:30,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290171419] [2020-10-12 15:39:30,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:30,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:30,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:30,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:30,852 INFO L87 Difference]: Start difference. First operand 296 states and 372 transitions. Second operand 12 states. [2020-10-12 15:39:31,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:31,601 INFO L93 Difference]: Finished difference Result 426 states and 513 transitions. [2020-10-12 15:39:31,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:39:31,602 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-12 15:39:31,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:31,604 INFO L225 Difference]: With dead ends: 426 [2020-10-12 15:39:31,604 INFO L226 Difference]: Without dead ends: 424 [2020-10-12 15:39:31,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:39:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-12 15:39:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 299. [2020-10-12 15:39:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-10-12 15:39:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 376 transitions. [2020-10-12 15:39:31,634 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 376 transitions. Word has length 38 [2020-10-12 15:39:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:31,634 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 376 transitions. [2020-10-12 15:39:31,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 376 transitions. [2020-10-12 15:39:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:39:31,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:31,636 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:31,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 15:39:31,636 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:31,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1013548526, now seen corresponding path program 1 times [2020-10-12 15:39:31,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:31,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151233933] [2020-10-12 15:39:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:31,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:32,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:39:32,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:33,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:33,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:39:33,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151233933] [2020-10-12 15:39:33,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:33,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:33,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139217460] [2020-10-12 15:39:33,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:33,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:33,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:33,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:33,022 INFO L87 Difference]: Start difference. First operand 299 states and 376 transitions. Second operand 12 states. [2020-10-12 15:39:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:33,819 INFO L93 Difference]: Finished difference Result 351 states and 431 transitions. [2020-10-12 15:39:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:33,820 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-10-12 15:39:33,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:33,822 INFO L225 Difference]: With dead ends: 351 [2020-10-12 15:39:33,823 INFO L226 Difference]: Without dead ends: 349 [2020-10-12 15:39:33,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:39:33,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-12 15:39:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 306. [2020-10-12 15:39:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-12 15:39:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2020-10-12 15:39:33,845 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 38 [2020-10-12 15:39:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:33,845 INFO L479 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2020-10-12 15:39:33,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2020-10-12 15:39:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:39:33,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:33,846 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:33,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 15:39:33,846 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash 8376, now seen corresponding path program 5 times [2020-10-12 15:39:33,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:33,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696064285] [2020-10-12 15:39:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:33,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:39:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:34,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:34,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696064285] [2020-10-12 15:39:34,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:34,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:34,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309159433] [2020-10-12 15:39:34,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:34,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:34,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:34,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:34,337 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand 13 states. [2020-10-12 15:39:35,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:35,324 INFO L93 Difference]: Finished difference Result 417 states and 522 transitions. [2020-10-12 15:39:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:35,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-12 15:39:35,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:35,326 INFO L225 Difference]: With dead ends: 417 [2020-10-12 15:39:35,326 INFO L226 Difference]: Without dead ends: 415 [2020-10-12 15:39:35,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:39:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-12 15:39:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 330. [2020-10-12 15:39:35,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2020-10-12 15:39:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 419 transitions. [2020-10-12 15:39:35,354 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 419 transitions. Word has length 39 [2020-10-12 15:39:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:35,354 INFO L479 AbstractCegarLoop]: Abstraction has 330 states and 419 transitions. [2020-10-12 15:39:35,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 419 transitions. [2020-10-12 15:39:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:39:35,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:35,355 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:35,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 15:39:35,356 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:35,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:35,356 INFO L82 PathProgramCache]: Analyzing trace with hash -645272572, now seen corresponding path program 1 times [2020-10-12 15:39:35,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:35,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235095049] [2020-10-12 15:39:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:35,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:35,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:35,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:39:35,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-12 15:39:35,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 15:39:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:36,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:36,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:36,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:36,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:36,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:39:36,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235095049] [2020-10-12 15:39:36,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:36,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:36,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219716553] [2020-10-12 15:39:36,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:36,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:36,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:36,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:36,013 INFO L87 Difference]: Start difference. First operand 330 states and 419 transitions. Second operand 12 states. [2020-10-12 15:39:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:36,682 INFO L93 Difference]: Finished difference Result 448 states and 545 transitions. [2020-10-12 15:39:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:39:36,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-12 15:39:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:36,685 INFO L225 Difference]: With dead ends: 448 [2020-10-12 15:39:36,685 INFO L226 Difference]: Without dead ends: 432 [2020-10-12 15:39:36,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:39:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-12 15:39:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 322. [2020-10-12 15:39:36,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-12 15:39:36,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 409 transitions. [2020-10-12 15:39:36,718 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 409 transitions. Word has length 39 [2020-10-12 15:39:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:36,719 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 409 transitions. [2020-10-12 15:39:36,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 409 transitions. [2020-10-12 15:39:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:39:36,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:36,721 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, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:36,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 15:39:36,721 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:36,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:36,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2099467162, now seen corresponding path program 2 times [2020-10-12 15:39:36,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:36,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415227208] [2020-10-12 15:39:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:36,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:36,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:39:36,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-12 15:39:36,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:39:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:37,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:37,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:37,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:37,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:37,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:37,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:37,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:37,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415227208] [2020-10-12 15:39:37,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:37,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:37,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599859230] [2020-10-12 15:39:37,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:37,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:37,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:37,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:37,337 INFO L87 Difference]: Start difference. First operand 322 states and 409 transitions. Second operand 12 states. [2020-10-12 15:39:37,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:37,865 INFO L93 Difference]: Finished difference Result 392 states and 483 transitions. [2020-10-12 15:39:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:39:37,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-12 15:39:37,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:37,868 INFO L225 Difference]: With dead ends: 392 [2020-10-12 15:39:37,869 INFO L226 Difference]: Without dead ends: 390 [2020-10-12 15:39:37,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-12 15:39:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 322. [2020-10-12 15:39:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-12 15:39:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 409 transitions. [2020-10-12 15:39:37,891 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 409 transitions. Word has length 39 [2020-10-12 15:39:37,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:37,891 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 409 transitions. [2020-10-12 15:39:37,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 409 transitions. [2020-10-12 15:39:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:39:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:37,893 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:37,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 15:39:37,893 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:37,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2090649693, now seen corresponding path program 1 times [2020-10-12 15:39:37,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:37,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896726045] [2020-10-12 15:39:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:37,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:38,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:38,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 15:39:38,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-12 15:39:38,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:39:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 15:39:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:39:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:38,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:38,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:38,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:38,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:38,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:38,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:38,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 15:39:38,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896726045] [2020-10-12 15:39:38,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:39:38,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:39:38,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782051118] [2020-10-12 15:39:38,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:39:38,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:38,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:39:38,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:39:38,029 INFO L87 Difference]: Start difference. First operand 322 states and 409 transitions. Second operand 4 states. [2020-10-12 15:39:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:38,152 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2020-10-12 15:39:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:39:38,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-12 15:39:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:38,154 INFO L225 Difference]: With dead ends: 535 [2020-10-12 15:39:38,154 INFO L226 Difference]: Without dead ends: 278 [2020-10-12 15:39:38,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:39:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-12 15:39:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2020-10-12 15:39:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-12 15:39:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 340 transitions. [2020-10-12 15:39:38,180 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 340 transitions. Word has length 39 [2020-10-12 15:39:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:38,180 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 340 transitions. [2020-10-12 15:39:38,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:39:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 340 transitions. [2020-10-12 15:39:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:39:38,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:38,181 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:38,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 15:39:38,182 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash 398790395, now seen corresponding path program 6 times [2020-10-12 15:39:38,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:38,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655928718] [2020-10-12 15:39:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:38,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:38,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:39:38,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-12 15:39:38,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:38,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:39:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:38,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:38,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:38,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:38,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655928718] [2020-10-12 15:39:38,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:38,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:38,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765394322] [2020-10-12 15:39:38,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:38,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:38,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:38,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:38,727 INFO L87 Difference]: Start difference. First operand 277 states and 340 transitions. Second operand 13 states. [2020-10-12 15:39:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:39,376 INFO L93 Difference]: Finished difference Result 408 states and 499 transitions. [2020-10-12 15:39:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:39:39,377 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-12 15:39:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:39,379 INFO L225 Difference]: With dead ends: 408 [2020-10-12 15:39:39,379 INFO L226 Difference]: Without dead ends: 337 [2020-10-12 15:39:39,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:39:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-12 15:39:39,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 291. [2020-10-12 15:39:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-10-12 15:39:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 356 transitions. [2020-10-12 15:39:39,408 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 356 transitions. Word has length 40 [2020-10-12 15:39:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:39,408 INFO L479 AbstractCegarLoop]: Abstraction has 291 states and 356 transitions. [2020-10-12 15:39:39,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 356 transitions. [2020-10-12 15:39:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:39:39,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:39,410 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:39,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 15:39:39,410 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:39,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1486749415, now seen corresponding path program 1 times [2020-10-12 15:39:39,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:39,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151784259] [2020-10-12 15:39:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:39,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:40,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:40,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:39:40,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:40,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-12 15:39:40,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:40,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:40,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:39:40,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:40,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:40,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:40,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:40,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:40,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:40,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:40,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:39:40,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151784259] [2020-10-12 15:39:40,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:40,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:39:40,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076372066] [2020-10-12 15:39:40,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:39:40,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:39:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:39:40,324 INFO L87 Difference]: Start difference. First operand 291 states and 356 transitions. Second operand 12 states. [2020-10-12 15:39:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:41,106 INFO L93 Difference]: Finished difference Result 395 states and 467 transitions. [2020-10-12 15:39:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:41,106 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-12 15:39:41,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:41,108 INFO L225 Difference]: With dead ends: 395 [2020-10-12 15:39:41,108 INFO L226 Difference]: Without dead ends: 393 [2020-10-12 15:39:41,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:39:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-12 15:39:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 284. [2020-10-12 15:39:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-12 15:39:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 348 transitions. [2020-10-12 15:39:41,132 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 348 transitions. Word has length 40 [2020-10-12 15:39:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:41,132 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 348 transitions. [2020-10-12 15:39:41,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:39:41,132 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 348 transitions. [2020-10-12 15:39:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:39:41,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:41,133 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:41,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 15:39:41,133 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:41,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:41,133 INFO L82 PathProgramCache]: Analyzing trace with hash -27174665, now seen corresponding path program 7 times [2020-10-12 15:39:41,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:41,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030351545] [2020-10-12 15:39:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:41,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-12 15:39:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:39:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 15:39:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:42,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:42,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:42,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:42,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:42,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:42,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030351545] [2020-10-12 15:39:42,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:42,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:39:42,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975096926] [2020-10-12 15:39:42,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:39:42,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:42,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:39:42,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:42,028 INFO L87 Difference]: Start difference. First operand 284 states and 348 transitions. Second operand 14 states. [2020-10-12 15:39:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:43,081 INFO L93 Difference]: Finished difference Result 425 states and 524 transitions. [2020-10-12 15:39:43,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:39:43,082 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-10-12 15:39:43,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:43,083 INFO L225 Difference]: With dead ends: 425 [2020-10-12 15:39:43,084 INFO L226 Difference]: Without dead ends: 423 [2020-10-12 15:39:43,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:39:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-12 15:39:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 318. [2020-10-12 15:39:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-12 15:39:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 392 transitions. [2020-10-12 15:39:43,111 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 392 transitions. Word has length 40 [2020-10-12 15:39:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:43,112 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 392 transitions. [2020-10-12 15:39:43,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:39:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 392 transitions. [2020-10-12 15:39:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:39:43,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:43,113 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:43,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 15:39:43,113 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:43,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:43,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1045253799, now seen corresponding path program 1 times [2020-10-12 15:39:43,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:43,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387474116] [2020-10-12 15:39:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:39:43,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 15:39:43,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:43,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:39:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 15:39:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:43,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:43,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:43,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:43,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:43,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:43,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:43,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:43,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:43,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 15:39:43,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387474116] [2020-10-12 15:39:43,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:43,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 15:39:43,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947509406] [2020-10-12 15:39:43,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 15:39:43,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:43,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 15:39:43,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:39:43,354 INFO L87 Difference]: Start difference. First operand 318 states and 392 transitions. Second operand 10 states. [2020-10-12 15:39:43,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:43,867 INFO L93 Difference]: Finished difference Result 425 states and 507 transitions. [2020-10-12 15:39:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:39:43,867 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-12 15:39:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:43,869 INFO L225 Difference]: With dead ends: 425 [2020-10-12 15:39:43,869 INFO L226 Difference]: Without dead ends: 401 [2020-10-12 15:39:43,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-12 15:39:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-12 15:39:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 342. [2020-10-12 15:39:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 15:39:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 420 transitions. [2020-10-12 15:39:43,902 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 420 transitions. Word has length 40 [2020-10-12 15:39:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:43,902 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 420 transitions. [2020-10-12 15:39:43,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 15:39:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 420 transitions. [2020-10-12 15:39:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:39:43,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:43,904 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:43,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 15:39:43,904 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:43,904 INFO L82 PathProgramCache]: Analyzing trace with hash 658481229, now seen corresponding path program 2 times [2020-10-12 15:39:43,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:43,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041923006] [2020-10-12 15:39:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:44,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 15:39:44,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:45,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:45,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:45,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:45,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:45,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:45,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041923006] [2020-10-12 15:39:45,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:45,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:45,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918505003] [2020-10-12 15:39:45,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:45,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:45,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:45,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:45,290 INFO L87 Difference]: Start difference. First operand 342 states and 420 transitions. Second operand 13 states. [2020-10-12 15:39:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:45,995 INFO L93 Difference]: Finished difference Result 390 states and 469 transitions. [2020-10-12 15:39:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 15:39:45,995 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-12 15:39:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:45,998 INFO L225 Difference]: With dead ends: 390 [2020-10-12 15:39:45,998 INFO L226 Difference]: Without dead ends: 379 [2020-10-12 15:39:45,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:39:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-12 15:39:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 342. [2020-10-12 15:39:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 15:39:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 419 transitions. [2020-10-12 15:39:46,027 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 419 transitions. Word has length 40 [2020-10-12 15:39:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:46,027 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 419 transitions. [2020-10-12 15:39:46,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 419 transitions. [2020-10-12 15:39:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:39:46,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:46,028 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, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:46,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 15:39:46,028 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:46,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:46,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1177769661, now seen corresponding path program 1 times [2020-10-12 15:39:46,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:46,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899238239] [2020-10-12 15:39:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:46,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 15:39:46,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:46,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:46,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:46,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:46,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:46,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:46,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:39:46,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899238239] [2020-10-12 15:39:46,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:46,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 15:39:46,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730654635] [2020-10-12 15:39:46,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 15:39:46,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:46,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 15:39:46,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:39:46,991 INFO L87 Difference]: Start difference. First operand 342 states and 419 transitions. Second operand 14 states. [2020-10-12 15:39:48,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:48,059 INFO L93 Difference]: Finished difference Result 411 states and 494 transitions. [2020-10-12 15:39:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:39:48,060 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-12 15:39:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:48,063 INFO L225 Difference]: With dead ends: 411 [2020-10-12 15:39:48,063 INFO L226 Difference]: Without dead ends: 409 [2020-10-12 15:39:48,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:39:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-12 15:39:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 342. [2020-10-12 15:39:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-10-12 15:39:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 419 transitions. [2020-10-12 15:39:48,088 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 419 transitions. Word has length 41 [2020-10-12 15:39:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:48,088 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 419 transitions. [2020-10-12 15:39:48,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 15:39:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 419 transitions. [2020-10-12 15:39:48,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:39:48,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:48,090 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, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:48,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 15:39:48,090 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:48,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:48,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1987116287, now seen corresponding path program 1 times [2020-10-12 15:39:48,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:48,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122309966] [2020-10-12 15:39:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:50,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:50,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 15:39:50,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 15:39:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-10-12 15:39:50,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:39:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:39:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 15:39:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:50,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:50,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:50,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:50,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:50,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:50,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 15:39:50,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122309966] [2020-10-12 15:39:50,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:39:50,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:39:50,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773259449] [2020-10-12 15:39:50,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:39:50,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:39:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:39:50,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:39:50,830 INFO L87 Difference]: Start difference. First operand 342 states and 419 transitions. Second operand 13 states. [2020-10-12 15:39:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:39:51,820 INFO L93 Difference]: Finished difference Result 437 states and 519 transitions. [2020-10-12 15:39:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:39:51,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-12 15:39:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:39:51,823 INFO L225 Difference]: With dead ends: 437 [2020-10-12 15:39:51,823 INFO L226 Difference]: Without dead ends: 401 [2020-10-12 15:39:51,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:39:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-10-12 15:39:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 339. [2020-10-12 15:39:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-10-12 15:39:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 414 transitions. [2020-10-12 15:39:51,860 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 414 transitions. Word has length 41 [2020-10-12 15:39:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:39:51,861 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 414 transitions. [2020-10-12 15:39:51,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:39:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 414 transitions. [2020-10-12 15:39:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 15:39:51,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:39:51,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:39:51,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 15:39:51,863 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:39:51,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:39:51,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1956379246, now seen corresponding path program 1 times [2020-10-12 15:39:51,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:39:51,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138648454] [2020-10-12 15:39:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:39:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:39:51,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:39:51,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:39:51,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 15:39:51,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:39:51 BoogieIcfgContainer [2020-10-12 15:39:51,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:39:51,938 INFO L168 Benchmark]: Toolchain (without parser) took 100663.69 ms. Allocated memory was 140.5 MB in the beginning and 1.0 GB in the end (delta: 872.4 MB). Free memory was 102.2 MB in the beginning and 330.7 MB in the end (delta: -228.5 MB). Peak memory consumption was 643.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:39:51,939 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 15:39:51,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.85 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 170.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:39:51,940 INFO L168 Benchmark]: Boogie Preprocessor took 64.17 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 167.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-12 15:39:51,940 INFO L168 Benchmark]: RCFGBuilder took 702.62 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 115.2 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:39:51,941 INFO L168 Benchmark]: TraceAbstraction took 99177.81 ms. Allocated memory was 203.9 MB in the beginning and 1.0 GB in the end (delta: 809.0 MB). Free memory was 114.5 MB in the beginning and 330.7 MB in the end (delta: -216.2 MB). Peak memory consumption was 592.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:39:51,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.85 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 170.0 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.17 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 167.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 702.62 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 115.2 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 99177.81 ms. Allocated memory was 203.9 MB in the beginning and 1.0 GB in the end (delta: 809.0 MB). Free memory was 114.5 MB in the beginning and 330.7 MB in the end (delta: -216.2 MB). Peak memory consumption was 592.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1051]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = ((void*)0) [L987] head->data = 0 [L989] SLL* x = head; [L990] int marked = 0; [L993] COND TRUE __VERIFIER_nondet_int() || !marked [L996] x->next = malloc(sizeof(SLL)) [L997] EXPR x->next [L997] x = x->next [L998] x->next = ((void*)0) [L1000] COND TRUE __VERIFIER_nondet_int() [L1002] marked = 1 [L1005] COND TRUE \read(marked) [L1006] x->data = 1 [L993] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1014] marked = 0 [L1016] EXPR x->next [L1016] x->next != ((void*)0) && x->next->data == 0 [L1016] EXPR x->next [L1016] EXPR x->next->data [L1016] x->next != ((void*)0) && x->next->data == 0 [L1016] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1021] EXPR x->next [L1021] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1021] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1021] COND FALSE !(x->next != ((void*)0) && __VERIFIER_nondet_int()) [L1027] SLL* tmp = malloc(sizeof(SLL)); [L1028] tmp->data = 1 [L1029] tmp->next = ((void*)0) [L1030] EXPR x->next [L1030] COND FALSE !(x->next == ((void*)0)) [L1034] EXPR x->next [L1034] tmp->next = x->next [L1035] x->next = tmp [L1038] marked = 0 [L1039] x = head [L1041] x != ((void*)0) && x->data != 1 [L1041] EXPR x->data [L1041] x != ((void*)0) && x->data != 1 [L1041] COND TRUE x != ((void*)0) && x->data != 1 [L1043] EXPR x->data [L1043] marked = x->data [L1044] EXPR x->data [L1044] COND FALSE !(!(x->data == 0)) [L1045] COND FALSE !(!(marked == 0)) [L1046] EXPR x->next [L1046] x = x->next [L1041] x != ((void*)0) && x->data != 1 [L1041] EXPR x->data [L1041] x != ((void*)0) && x->data != 1 [L1041] COND FALSE !(x != ((void*)0) && x->data != 1) [L1048] COND TRUE x != ((void*)0) [L1050] EXPR x->data [L1050] marked = x->data [L1051] EXPR x->data [L1051] COND TRUE !(x->data != 1) [L1051] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 99.0s, OverallIterations: 53, TraceHistogramMax: 5, AutomataDifference: 36.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3069 SDtfs, 6933 SDslu, 18548 SDs, 0 SdLazy, 19063 SolverSat, 1952 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1007 GetRequests, 170 SyntacticMatches, 24 SemanticMatches, 813 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 22.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342occurred in iteration=49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 52 MinimizatonAttempts, 2957 StatesRemovedByMinimization, 52 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 59.9s InterpolantComputationTime, 1803 NumberOfCodeBlocks, 1803 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 1710 ConstructedInterpolants, 0 QuantifiedInterpolants, 1151617 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 52 InterpolantComputations, 6 PerfectInterpolantSequences, 62/540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...