/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:07,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:07,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:07,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:07,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:07,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:07,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:07,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:07,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:07,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:07,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:07,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:07,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:07,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:07,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:07,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:07,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:07,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:07,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:07,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:07,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:07,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:07,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:07,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:07,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:07,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:07,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:07,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:07,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:07,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:07,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:07,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:07,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:07,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:07,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:07,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:07,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:07,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:07,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:07,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:07,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:07,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:21:08,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:08,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:08,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:08,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:08,002 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:08,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:08,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:08,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:08,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:08,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:08,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:08,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:08,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:08,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:08,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:08,005 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:08,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:08,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:08,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:08,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:08,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:08,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:08,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:08,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:08,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:08,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:08,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:08,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:08,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:08,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:21:08,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:08,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:08,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:08,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:08,333 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:08,333 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-2.i [2020-10-13 10:21:08,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3cb53900/2f508af0958f48de957a8edc806eac23/FLAG1342b338a [2020-10-13 10:21:08,915 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:08,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-2.i [2020-10-13 10:21:08,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3cb53900/2f508af0958f48de957a8edc806eac23/FLAG1342b338a [2020-10-13 10:21:09,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3cb53900/2f508af0958f48de957a8edc806eac23 [2020-10-13 10:21:09,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:09,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:09,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:09,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:09,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:09,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53254202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09, skipping insertion in model container [2020-10-13 10:21:09,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:09,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:09,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:09,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:09,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:09,874 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:09,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09 WrapperNode [2020-10-13 10:21:09,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:09,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:09,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:09,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:09,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... [2020-10-13 10:21:09,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:09,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:09,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:09,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:09,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:10,031 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:10,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:10,679 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:10,680 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-13 10:21:10,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:10 BoogieIcfgContainer [2020-10-13 10:21:10,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:10,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:10,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:10,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:10,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:09" (1/3) ... [2020-10-13 10:21:10,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e4b8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:10, skipping insertion in model container [2020-10-13 10:21:10,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:09" (2/3) ... [2020-10-13 10:21:10,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e4b8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:10, skipping insertion in model container [2020-10-13 10:21:10,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:10" (3/3) ... [2020-10-13 10:21:10,692 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-2.i [2020-10-13 10:21:10,702 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:10,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-10-13 10:21:10,722 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-10-13 10:21:10,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:10,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:10,743 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:10,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:10,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:10,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:10,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:10,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-13 10:21:10,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-13 10:21:10,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:10,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:10,774 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-10-13 10:21:10,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:10,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469476334] [2020-10-13 10:21:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:10,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:11,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:21:11,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-13 10:21:11,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:11,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:11,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:11,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:11,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:11,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:21:11,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:11,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:11,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:11,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469476334] [2020-10-13 10:21:11,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:11,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:11,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665184575] [2020-10-13 10:21:11,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:11,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:11,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:11,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:11,155 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-10-13 10:21:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:11,407 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-10-13 10:21:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:11,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-13 10:21:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:11,419 INFO L225 Difference]: With dead ends: 186 [2020-10-13 10:21:11,419 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:21:11,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:21:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-10-13 10:21:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:21:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-13 10:21:11,465 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-10-13 10:21:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:11,466 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-13 10:21:11,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-13 10:21:11,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:11,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:11,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:11,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:11,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:11,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:11,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-10-13 10:21:11,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:11,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089511555] [2020-10-13 10:21:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:11,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:11,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:11,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:11,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 10:21:11,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:11,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:11,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:11,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:21:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:11,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:11,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:11,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:11,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:11,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:11,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089511555] [2020-10-13 10:21:11,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:11,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:11,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871929857] [2020-10-13 10:21:11,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:11,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:11,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:11,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:11,682 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-10-13 10:21:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:11,820 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-13 10:21:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:11,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 10:21:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:11,822 INFO L225 Difference]: With dead ends: 84 [2020-10-13 10:21:11,822 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 10:21:11,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 10:21:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-13 10:21:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:21:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-13 10:21:11,834 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-10-13 10:21:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:11,834 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-13 10:21:11,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:11,835 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-13 10:21:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:11,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:11,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:11,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:11,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-10-13 10:21:11,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:11,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102386309] [2020-10-13 10:21:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 10:21:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:11,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:21:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:11,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:11,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:11,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:11,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:11,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:11,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:11,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:12,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102386309] [2020-10-13 10:21:12,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:12,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:12,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453353087] [2020-10-13 10:21:12,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:12,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:12,003 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-10-13 10:21:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:12,176 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-13 10:21:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:12,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-13 10:21:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:12,177 INFO L225 Difference]: With dead ends: 84 [2020-10-13 10:21:12,178 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 10:21:12,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 10:21:12,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-13 10:21:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 10:21:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-10-13 10:21:12,187 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-10-13 10:21:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:12,188 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-10-13 10:21:12,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-10-13 10:21:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:21:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:12,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:12,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:12,190 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-10-13 10:21:12,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:12,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463094022] [2020-10-13 10:21:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:12,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:21:12,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 10:21:12,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:12,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:12,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:12,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:12,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:12,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:12,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:12,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:12,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:12,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:12,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463094022] [2020-10-13 10:21:12,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:12,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:12,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073940213] [2020-10-13 10:21:12,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:12,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:12,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:12,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:12,417 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 4 states. [2020-10-13 10:21:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:12,557 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-13 10:21:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:12,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:21:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:12,558 INFO L225 Difference]: With dead ends: 82 [2020-10-13 10:21:12,558 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 10:21:12,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 10:21:12,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2020-10-13 10:21:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:21:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-13 10:21:12,566 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 19 [2020-10-13 10:21:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:12,567 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-13 10:21:12,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-13 10:21:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:12,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:12,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:12,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:12,569 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:12,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:12,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1214805939, now seen corresponding path program 1 times [2020-10-13 10:21:12,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:12,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738871284] [2020-10-13 10:21:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:12,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:12,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:12,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:12,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 10:21:12,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:12,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:12,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:12,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:12,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:12,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:21:12,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:12,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:12,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:12,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738871284] [2020-10-13 10:21:12,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:12,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:12,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938382521] [2020-10-13 10:21:12,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:12,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:12,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:12,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:12,883 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 5 states. [2020-10-13 10:21:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:13,111 INFO L93 Difference]: Finished difference Result 191 states and 213 transitions. [2020-10-13 10:21:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:13,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 10:21:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:13,115 INFO L225 Difference]: With dead ends: 191 [2020-10-13 10:21:13,115 INFO L226 Difference]: Without dead ends: 128 [2020-10-13 10:21:13,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-13 10:21:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 77. [2020-10-13 10:21:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 10:21:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-13 10:21:13,136 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 20 [2020-10-13 10:21:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:13,136 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-13 10:21:13,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-13 10:21:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:13,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:13,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:13,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:13,138 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:13,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:13,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-10-13 10:21:13,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:13,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57999024] [2020-10-13 10:21:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:13,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:13,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:13,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:13,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 10:21:13,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:13,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:13,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:13,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:13,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:13,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:13,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:13,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:13,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:13,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57999024] [2020-10-13 10:21:13,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:13,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:13,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793467364] [2020-10-13 10:21:13,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:13,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:13,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:13,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:13,298 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-10-13 10:21:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:13,499 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2020-10-13 10:21:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:13,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 10:21:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:13,500 INFO L225 Difference]: With dead ends: 96 [2020-10-13 10:21:13,501 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 10:21:13,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 10:21:13,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-13 10:21:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:21:13,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-13 10:21:13,509 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 20 [2020-10-13 10:21:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:13,509 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-13 10:21:13,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-13 10:21:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:13,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:13,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:13,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:13,511 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-10-13 10:21:13,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:13,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326824475] [2020-10-13 10:21:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:13,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:13,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:13,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:13,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:21:13,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:21:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:13,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:13,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:13,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:13,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:13,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326824475] [2020-10-13 10:21:13,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:13,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:13,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86496606] [2020-10-13 10:21:13,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:13,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:13,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:13,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:13,581 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-13 10:21:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:13,698 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-10-13 10:21:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:13,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 10:21:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:13,700 INFO L225 Difference]: With dead ends: 135 [2020-10-13 10:21:13,700 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 10:21:13,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 10:21:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 77. [2020-10-13 10:21:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 10:21:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-10-13 10:21:13,708 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 24 [2020-10-13 10:21:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:13,708 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-10-13 10:21:13,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-10-13 10:21:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:21:13,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:13,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:13,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:13,710 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:13,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:13,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-10-13 10:21:13,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:13,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465297156] [2020-10-13 10:21:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:13,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:21:14,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:14,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-13 10:21:14,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:21:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:14,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:14,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:14,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:14,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465297156] [2020-10-13 10:21:14,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:14,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:14,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566131400] [2020-10-13 10:21:14,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:14,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:14,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:14,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:14,082 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 4 states. [2020-10-13 10:21:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:14,200 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-13 10:21:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:14,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 10:21:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:14,202 INFO L225 Difference]: With dead ends: 77 [2020-10-13 10:21:14,202 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:21:14,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:21:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-13 10:21:14,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:21:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-10-13 10:21:14,209 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 25 [2020-10-13 10:21:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:14,211 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-10-13 10:21:14,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-10-13 10:21:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:21:14,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:14,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:14,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:14,216 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-10-13 10:21:14,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:14,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520901986] [2020-10-13 10:21:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:21:14,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:14,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 10:21:14,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:14,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:14,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:14,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:14,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:14,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:14,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520901986] [2020-10-13 10:21:14,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:14,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:14,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718572669] [2020-10-13 10:21:14,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:14,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:14,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:14,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:14,437 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 5 states. [2020-10-13 10:21:14,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:14,627 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-13 10:21:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:14,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-13 10:21:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:14,629 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:21:14,629 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 10:21:14,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 10:21:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 10:21:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 10:21:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-10-13 10:21:14,642 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 27 [2020-10-13 10:21:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:14,643 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-10-13 10:21:14,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-10-13 10:21:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:14,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:14,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:14,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:14,645 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:14,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:14,645 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-10-13 10:21:14,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:14,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956450816] [2020-10-13 10:21:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:14,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:21:14,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:21:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-13 10:21:14,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:14,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:14,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:14,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:14,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:14,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:14,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:14,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:14,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:14,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:14,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:14,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956450816] [2020-10-13 10:21:14,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:14,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:21:14,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872099577] [2020-10-13 10:21:14,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:14,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:14,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:14,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:14,970 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 7 states. [2020-10-13 10:21:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:15,261 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2020-10-13 10:21:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:15,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-13 10:21:15,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:15,263 INFO L225 Difference]: With dead ends: 174 [2020-10-13 10:21:15,263 INFO L226 Difference]: Without dead ends: 134 [2020-10-13 10:21:15,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:15,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-13 10:21:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 83. [2020-10-13 10:21:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 10:21:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2020-10-13 10:21:15,277 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 28 [2020-10-13 10:21:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:15,277 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2020-10-13 10:21:15,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2020-10-13 10:21:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:15,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:15,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:15,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:15,279 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-10-13 10:21:15,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:15,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103914514] [2020-10-13 10:21:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:15,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:15,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:15,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:21:15,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:21:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-13 10:21:15,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:15,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:21:15,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:16,333 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2020-10-13 10:21:16,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:16,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:16,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:16,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:16,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:16,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:16,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103914514] [2020-10-13 10:21:16,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:16,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 10:21:16,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284537157] [2020-10-13 10:21:16,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:16,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:16,411 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand 8 states. [2020-10-13 10:21:16,772 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-13 10:21:17,004 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-13 10:21:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:17,167 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-10-13 10:21:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:17,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-13 10:21:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:17,170 INFO L225 Difference]: With dead ends: 152 [2020-10-13 10:21:17,171 INFO L226 Difference]: Without dead ends: 150 [2020-10-13 10:21:17,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-13 10:21:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 102. [2020-10-13 10:21:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:21:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2020-10-13 10:21:17,182 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 28 [2020-10-13 10:21:17,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:17,184 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2020-10-13 10:21:17,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:17,184 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2020-10-13 10:21:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:21:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:17,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:17,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:17,192 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-10-13 10:21:17,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:17,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235722561] [2020-10-13 10:21:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:17,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:17,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:21:17,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:21:17,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-13 10:21:17,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:17,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:17,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:18,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:18,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:18,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:18,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235722561] [2020-10-13 10:21:18,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:18,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:21:18,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074464370] [2020-10-13 10:21:18,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:18,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:18,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:18,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:18,044 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand 9 states. [2020-10-13 10:21:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:18,653 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-10-13 10:21:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:21:18,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-13 10:21:18,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:18,658 INFO L225 Difference]: With dead ends: 237 [2020-10-13 10:21:18,658 INFO L226 Difference]: Without dead ends: 235 [2020-10-13 10:21:18,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:21:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-13 10:21:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 109. [2020-10-13 10:21:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 10:21:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-10-13 10:21:18,668 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 31 [2020-10-13 10:21:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:18,668 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-10-13 10:21:18,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-10-13 10:21:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:18,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:18,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:18,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:18,670 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:18,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1719230162, now seen corresponding path program 1 times [2020-10-13 10:21:18,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:18,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902238847] [2020-10-13 10:21:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:19,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:21:19,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-13 10:21:19,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:21:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:19,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:19,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:19,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902238847] [2020-10-13 10:21:19,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:19,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:19,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184284021] [2020-10-13 10:21:19,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:19,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:19,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:19,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:19,089 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 7 states. [2020-10-13 10:21:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:19,472 INFO L93 Difference]: Finished difference Result 204 states and 230 transitions. [2020-10-13 10:21:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:19,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-13 10:21:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:19,474 INFO L225 Difference]: With dead ends: 204 [2020-10-13 10:21:19,474 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 10:21:19,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 10:21:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 130. [2020-10-13 10:21:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:21:19,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2020-10-13 10:21:19,489 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 33 [2020-10-13 10:21:19,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:19,490 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2020-10-13 10:21:19,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2020-10-13 10:21:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:19,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:19,492 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] [2020-10-13 10:21:19,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:21:19,492 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:19,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:19,493 INFO L82 PathProgramCache]: Analyzing trace with hash -999338862, now seen corresponding path program 1 times [2020-10-13 10:21:19,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:19,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407739807] [2020-10-13 10:21:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:19,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:21:19,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:19,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:19,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:19,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:19,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:19,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:19,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407739807] [2020-10-13 10:21:19,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:19,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:21:19,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333743558] [2020-10-13 10:21:19,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:19,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:19,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:19,613 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 6 states. [2020-10-13 10:21:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:19,894 INFO L93 Difference]: Finished difference Result 223 states and 261 transitions. [2020-10-13 10:21:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:19,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-13 10:21:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:19,896 INFO L225 Difference]: With dead ends: 223 [2020-10-13 10:21:19,896 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 10:21:19,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:19,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 10:21:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 138. [2020-10-13 10:21:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-13 10:21:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-10-13 10:21:19,906 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 33 [2020-10-13 10:21:19,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:19,906 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-10-13 10:21:19,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-10-13 10:21:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:19,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:19,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:19,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:21:19,907 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1941174974, now seen corresponding path program 1 times [2020-10-13 10:21:19,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:19,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336984818] [2020-10-13 10:21:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:21:19,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 10:21:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:21:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:19,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:19,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:19,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:19,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:19,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336984818] [2020-10-13 10:21:19,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:19,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:19,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41052905] [2020-10-13 10:21:19,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:19,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:19,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:19,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:19,971 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 4 states. [2020-10-13 10:21:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:20,087 INFO L93 Difference]: Finished difference Result 180 states and 216 transitions. [2020-10-13 10:21:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:20,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-13 10:21:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:20,089 INFO L225 Difference]: With dead ends: 180 [2020-10-13 10:21:20,089 INFO L226 Difference]: Without dead ends: 178 [2020-10-13 10:21:20,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-13 10:21:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 169. [2020-10-13 10:21:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 10:21:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-10-13 10:21:20,100 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 35 [2020-10-13 10:21:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:20,101 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-10-13 10:21:20,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-10-13 10:21:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:20,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:20,102 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, 1, 1] [2020-10-13 10:21:20,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:21:20,102 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash 930038423, now seen corresponding path program 1 times [2020-10-13 10:21:20,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:20,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149033649] [2020-10-13 10:21:20,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:20,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:20,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:20,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 10:21:20,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:21:20,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:20,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:20,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:20,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:20,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:20,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:20,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:20,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:20,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:20,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:20,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:20,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149033649] [2020-10-13 10:21:20,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:20,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:20,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738155461] [2020-10-13 10:21:20,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:20,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:20,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:20,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:20,317 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 7 states. [2020-10-13 10:21:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:20,684 INFO L93 Difference]: Finished difference Result 307 states and 362 transitions. [2020-10-13 10:21:20,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:20,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-13 10:21:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:20,687 INFO L225 Difference]: With dead ends: 307 [2020-10-13 10:21:20,687 INFO L226 Difference]: Without dead ends: 275 [2020-10-13 10:21:20,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-13 10:21:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 200. [2020-10-13 10:21:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-13 10:21:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 241 transitions. [2020-10-13 10:21:20,699 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 241 transitions. Word has length 36 [2020-10-13 10:21:20,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:20,700 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 241 transitions. [2020-10-13 10:21:20,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 241 transitions. [2020-10-13 10:21:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:20,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:20,701 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, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:20,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:21:20,701 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:20,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1341973316, now seen corresponding path program 1 times [2020-10-13 10:21:20,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:20,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244149467] [2020-10-13 10:21:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 10:21:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3203 [2020-10-13 10:21:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:21:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:24,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:24,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:24,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244149467] [2020-10-13 10:21:24,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:24,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:24,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744058177] [2020-10-13 10:21:24,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:24,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:24,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:24,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:24,181 INFO L87 Difference]: Start difference. First operand 200 states and 241 transitions. Second operand 11 states. [2020-10-13 10:21:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,169 INFO L93 Difference]: Finished difference Result 382 states and 454 transitions. [2020-10-13 10:21:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:21:25,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 10:21:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,172 INFO L225 Difference]: With dead ends: 382 [2020-10-13 10:21:25,173 INFO L226 Difference]: Without dead ends: 296 [2020-10-13 10:21:25,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:21:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-13 10:21:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 217. [2020-10-13 10:21:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-13 10:21:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 261 transitions. [2020-10-13 10:21:25,189 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 261 transitions. Word has length 40 [2020-10-13 10:21:25,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,189 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 261 transitions. [2020-10-13 10:21:25,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 261 transitions. [2020-10-13 10:21:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:25,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,190 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, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:25,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:21:25,191 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,191 INFO L82 PathProgramCache]: Analyzing trace with hash 958849274, now seen corresponding path program 1 times [2020-10-13 10:21:25,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538247841] [2020-10-13 10:21:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:30,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:21:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:21:30,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:21:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:30,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:30,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:30,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:30,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:30,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538247841] [2020-10-13 10:21:30,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:30,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:30,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438701179] [2020-10-13 10:21:30,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:30,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:30,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:30,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:30,283 INFO L87 Difference]: Start difference. First operand 217 states and 261 transitions. Second operand 6 states. [2020-10-13 10:21:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:30,544 INFO L93 Difference]: Finished difference Result 363 states and 441 transitions. [2020-10-13 10:21:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:30,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 10:21:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:30,550 INFO L225 Difference]: With dead ends: 363 [2020-10-13 10:21:30,550 INFO L226 Difference]: Without dead ends: 226 [2020-10-13 10:21:30,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-13 10:21:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 219. [2020-10-13 10:21:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-13 10:21:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 263 transitions. [2020-10-13 10:21:30,570 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 263 transitions. Word has length 40 [2020-10-13 10:21:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:30,571 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 263 transitions. [2020-10-13 10:21:30,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:30,571 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 263 transitions. [2020-10-13 10:21:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:30,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:30,572 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, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:30,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:21:30,573 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:30,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:30,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1979917628, now seen corresponding path program 1 times [2020-10-13 10:21:30,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:30,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582091299] [2020-10-13 10:21:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:32,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:21:32,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-13 10:21:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:21:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:33,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:33,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:33,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:33,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:33,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:33,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:33,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:33,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582091299] [2020-10-13 10:21:33,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:33,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:33,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805311927] [2020-10-13 10:21:33,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:33,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:33,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:33,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:33,173 INFO L87 Difference]: Start difference. First operand 219 states and 263 transitions. Second operand 10 states. [2020-10-13 10:21:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:33,835 INFO L93 Difference]: Finished difference Result 414 states and 493 transitions. [2020-10-13 10:21:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:21:33,835 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-13 10:21:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:33,837 INFO L225 Difference]: With dead ends: 414 [2020-10-13 10:21:33,838 INFO L226 Difference]: Without dead ends: 328 [2020-10-13 10:21:33,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:21:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-13 10:21:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 238. [2020-10-13 10:21:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-13 10:21:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2020-10-13 10:21:33,852 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 40 [2020-10-13 10:21:33,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:33,853 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2020-10-13 10:21:33,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2020-10-13 10:21:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:33,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:33,854 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, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:33,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:21:33,854 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:33,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash -2026576836, now seen corresponding path program 1 times [2020-10-13 10:21:33,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:33,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015522958] [2020-10-13 10:21:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:34,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-13 10:21:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:21:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:34,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:34,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:34,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:34,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:34,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:34,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:34,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:34,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015522958] [2020-10-13 10:21:34,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:34,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:34,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166942361] [2020-10-13 10:21:34,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:34,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:34,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:34,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:34,456 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand 11 states. [2020-10-13 10:21:34,693 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-13 10:21:35,042 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-13 10:21:35,444 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-13 10:21:36,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:36,246 INFO L93 Difference]: Finished difference Result 441 states and 516 transitions. [2020-10-13 10:21:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:21:36,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 10:21:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:36,249 INFO L225 Difference]: With dead ends: 441 [2020-10-13 10:21:36,250 INFO L226 Difference]: Without dead ends: 439 [2020-10-13 10:21:36,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:21:36,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-13 10:21:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 260. [2020-10-13 10:21:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-13 10:21:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 311 transitions. [2020-10-13 10:21:36,268 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 311 transitions. Word has length 40 [2020-10-13 10:21:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:36,268 INFO L479 AbstractCegarLoop]: Abstraction has 260 states and 311 transitions. [2020-10-13 10:21:36,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 311 transitions. [2020-10-13 10:21:36,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:36,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:36,269 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, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:36,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:21:36,269 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:36,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1295314108, now seen corresponding path program 1 times [2020-10-13 10:21:36,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:36,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041538110] [2020-10-13 10:21:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:36,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:36,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:36,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-13 10:21:36,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:36,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:21:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:36,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:36,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:36,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:36,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:36,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:36,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:36,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:37,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041538110] [2020-10-13 10:21:37,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:37,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:37,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879118800] [2020-10-13 10:21:37,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:37,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:37,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:37,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:37,007 INFO L87 Difference]: Start difference. First operand 260 states and 311 transitions. Second operand 11 states. [2020-10-13 10:21:37,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:37,956 INFO L93 Difference]: Finished difference Result 348 states and 405 transitions. [2020-10-13 10:21:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:37,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 10:21:37,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:37,959 INFO L225 Difference]: With dead ends: 348 [2020-10-13 10:21:37,959 INFO L226 Difference]: Without dead ends: 346 [2020-10-13 10:21:37,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-13 10:21:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 242. [2020-10-13 10:21:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-13 10:21:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 289 transitions. [2020-10-13 10:21:37,977 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 289 transitions. Word has length 40 [2020-10-13 10:21:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:37,977 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 289 transitions. [2020-10-13 10:21:37,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 289 transitions. [2020-10-13 10:21:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:21:37,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:37,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:37,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:21:37,979 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:37,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:37,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1848258342, now seen corresponding path program 1 times [2020-10-13 10:21:37,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:37,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617590376] [2020-10-13 10:21:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:37,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:21:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:40,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:40,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:40,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:40,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617590376] [2020-10-13 10:21:40,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:40,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:40,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897269487] [2020-10-13 10:21:40,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:40,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:40,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:40,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:40,061 INFO L87 Difference]: Start difference. First operand 242 states and 289 transitions. Second operand 6 states. [2020-10-13 10:21:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:40,234 INFO L93 Difference]: Finished difference Result 322 states and 383 transitions. [2020-10-13 10:21:40,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:40,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-13 10:21:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:40,238 INFO L225 Difference]: With dead ends: 322 [2020-10-13 10:21:40,238 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 10:21:40,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 10:21:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-10-13 10:21:40,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 10:21:40,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 204 transitions. [2020-10-13 10:21:40,258 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 204 transitions. Word has length 42 [2020-10-13 10:21:40,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:40,258 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 204 transitions. [2020-10-13 10:21:40,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:40,258 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 204 transitions. [2020-10-13 10:21:40,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:21:40,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:40,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:40,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:21:40,261 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:40,262 INFO L82 PathProgramCache]: Analyzing trace with hash 608870837, now seen corresponding path program 1 times [2020-10-13 10:21:40,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:40,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048850752] [2020-10-13 10:21:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:21:40,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:40,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-13 10:21:40,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:40,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:21:40,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:41,128 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-13 10:21:41,343 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-13 10:21:41,704 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 63 [2020-10-13 10:21:42,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:42,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:42,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:42,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:42,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:42,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048850752] [2020-10-13 10:21:42,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:42,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:42,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405962941] [2020-10-13 10:21:42,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:42,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:42,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:42,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:42,085 INFO L87 Difference]: Start difference. First operand 181 states and 204 transitions. Second operand 13 states. [2020-10-13 10:21:42,502 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-13 10:21:42,856 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 78 [2020-10-13 10:21:43,434 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2020-10-13 10:21:43,823 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 92 [2020-10-13 10:21:44,372 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 96 [2020-10-13 10:21:44,745 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2020-10-13 10:21:45,145 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 90 [2020-10-13 10:21:45,554 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 101 [2020-10-13 10:21:45,692 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 10:21:46,032 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 98 [2020-10-13 10:21:46,522 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 103 [2020-10-13 10:21:46,995 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2020-10-13 10:21:47,362 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2020-10-13 10:21:47,739 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-10-13 10:21:48,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:48,002 INFO L93 Difference]: Finished difference Result 320 states and 355 transitions. [2020-10-13 10:21:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:21:48,003 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-13 10:21:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:48,005 INFO L225 Difference]: With dead ends: 320 [2020-10-13 10:21:48,006 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 10:21:48,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:21:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 10:21:48,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 206. [2020-10-13 10:21:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 10:21:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 233 transitions. [2020-10-13 10:21:48,025 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 233 transitions. Word has length 43 [2020-10-13 10:21:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:48,026 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 233 transitions. [2020-10-13 10:21:48,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 233 transitions. [2020-10-13 10:21:48,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:21:48,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:48,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:48,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:21:48,027 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:48,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1574450891, now seen corresponding path program 1 times [2020-10-13 10:21:48,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:48,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950245088] [2020-10-13 10:21:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:21:49,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:49,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1136 [2020-10-13 10:21:49,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:21:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,704 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2020-10-13 10:21:50,229 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-10-13 10:21:50,925 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 74 [2020-10-13 10:21:51,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:51,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950245088] [2020-10-13 10:21:51,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:51,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:21:51,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664266162] [2020-10-13 10:21:51,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:21:51,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:51,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:21:51,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:51,439 INFO L87 Difference]: Start difference. First operand 206 states and 233 transitions. Second operand 13 states. [2020-10-13 10:21:51,883 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2020-10-13 10:21:52,229 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-13 10:21:52,607 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 99 [2020-10-13 10:21:52,962 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2020-10-13 10:21:53,271 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-10-13 10:21:53,716 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 104 [2020-10-13 10:21:54,040 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 95 [2020-10-13 10:21:54,382 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2020-10-13 10:21:55,207 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-13 10:21:55,405 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-13 10:21:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:55,597 INFO L93 Difference]: Finished difference Result 336 states and 374 transitions. [2020-10-13 10:21:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:21:55,598 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-13 10:21:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:55,600 INFO L225 Difference]: With dead ends: 336 [2020-10-13 10:21:55,601 INFO L226 Difference]: Without dead ends: 334 [2020-10-13 10:21:55,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=204, Invalid=608, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:21:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-13 10:21:55,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 208. [2020-10-13 10:21:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-13 10:21:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 235 transitions. [2020-10-13 10:21:55,618 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 235 transitions. Word has length 43 [2020-10-13 10:21:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:55,618 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 235 transitions. [2020-10-13 10:21:55,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:21:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 235 transitions. [2020-10-13 10:21:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:21:55,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:55,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:55,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:21:55,620 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:55,620 INFO L82 PathProgramCache]: Analyzing trace with hash 938403788, now seen corresponding path program 1 times [2020-10-13 10:21:55,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:55,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657351865] [2020-10-13 10:21:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:21:57,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:21:57,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-13 10:21:57,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:21:57,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:21:57,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:57,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:57,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:57,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:57,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657351865] [2020-10-13 10:21:57,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:57,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:57,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496618295] [2020-10-13 10:21:57,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:57,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:57,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:57,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:57,997 INFO L87 Difference]: Start difference. First operand 208 states and 235 transitions. Second operand 9 states. [2020-10-13 10:21:58,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:58,507 INFO L93 Difference]: Finished difference Result 246 states and 274 transitions. [2020-10-13 10:21:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:21:58,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-13 10:21:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:58,508 INFO L225 Difference]: With dead ends: 246 [2020-10-13 10:21:58,509 INFO L226 Difference]: Without dead ends: 244 [2020-10-13 10:21:58,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:21:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-13 10:21:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 214. [2020-10-13 10:21:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-13 10:21:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 241 transitions. [2020-10-13 10:21:58,528 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 241 transitions. Word has length 44 [2020-10-13 10:21:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:58,529 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 241 transitions. [2020-10-13 10:21:58,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 241 transitions. [2020-10-13 10:21:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:21:58,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:58,530 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:58,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:21:58,530 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1122193205, now seen corresponding path program 1 times [2020-10-13 10:21:58,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:58,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048839707] [2020-10-13 10:21:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:58,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:58,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:21:58,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:58,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 10:21:58,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:21:58,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:21:58,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:59,118 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-10-13 10:21:59,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:59,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:59,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:59,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:59,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:59,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:59,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:59,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048839707] [2020-10-13 10:21:59,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:59,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:59,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845883306] [2020-10-13 10:21:59,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:59,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:59,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:59,310 INFO L87 Difference]: Start difference. First operand 214 states and 241 transitions. Second operand 9 states. [2020-10-13 10:22:00,023 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-13 10:22:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:00,808 INFO L93 Difference]: Finished difference Result 417 states and 469 transitions. [2020-10-13 10:22:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:00,809 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-13 10:22:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:00,810 INFO L225 Difference]: With dead ends: 417 [2020-10-13 10:22:00,811 INFO L226 Difference]: Without dead ends: 357 [2020-10-13 10:22:00,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-13 10:22:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 259. [2020-10-13 10:22:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-13 10:22:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 292 transitions. [2020-10-13 10:22:00,846 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 292 transitions. Word has length 45 [2020-10-13 10:22:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:00,846 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 292 transitions. [2020-10-13 10:22:00,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 292 transitions. [2020-10-13 10:22:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:22:00,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:00,848 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:00,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:22:00,848 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash 944633931, now seen corresponding path program 1 times [2020-10-13 10:22:00,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:00,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037841483] [2020-10-13 10:22:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:22:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-13 10:22:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:22:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,581 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-10-13 10:22:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:01,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:01,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:01,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037841483] [2020-10-13 10:22:01,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:01,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:01,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334983427] [2020-10-13 10:22:01,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:01,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:01,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:01,979 INFO L87 Difference]: Start difference. First operand 259 states and 292 transitions. Second operand 11 states. [2020-10-13 10:22:02,355 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-13 10:22:02,644 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-13 10:22:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:03,881 INFO L93 Difference]: Finished difference Result 405 states and 453 transitions. [2020-10-13 10:22:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:03,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-13 10:22:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:03,884 INFO L225 Difference]: With dead ends: 405 [2020-10-13 10:22:03,884 INFO L226 Difference]: Without dead ends: 403 [2020-10-13 10:22:03,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-10-13 10:22:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 293. [2020-10-13 10:22:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-13 10:22:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 330 transitions. [2020-10-13 10:22:03,915 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 330 transitions. Word has length 45 [2020-10-13 10:22:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:03,915 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 330 transitions. [2020-10-13 10:22:03,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 330 transitions. [2020-10-13 10:22:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:22:03,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:03,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:03,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:22:03,917 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:03,917 INFO L82 PathProgramCache]: Analyzing trace with hash 49320255, now seen corresponding path program 1 times [2020-10-13 10:22:03,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:03,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506457877] [2020-10-13 10:22:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:22:04,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:22:04,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-10-13 10:22:04,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:22:04,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:04,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:05,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:05,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:05,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:05,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:05,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506457877] [2020-10-13 10:22:05,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:05,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:05,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167332059] [2020-10-13 10:22:05,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:05,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:05,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:05,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:05,051 INFO L87 Difference]: Start difference. First operand 293 states and 330 transitions. Second operand 9 states. [2020-10-13 10:22:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:05,864 INFO L93 Difference]: Finished difference Result 308 states and 342 transitions. [2020-10-13 10:22:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:05,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-13 10:22:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:05,867 INFO L225 Difference]: With dead ends: 308 [2020-10-13 10:22:05,868 INFO L226 Difference]: Without dead ends: 277 [2020-10-13 10:22:05,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-13 10:22:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 267. [2020-10-13 10:22:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-13 10:22:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2020-10-13 10:22:05,905 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 47 [2020-10-13 10:22:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:05,905 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2020-10-13 10:22:05,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2020-10-13 10:22:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:22:05,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:05,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:05,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:05,908 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 967827270, now seen corresponding path program 1 times [2020-10-13 10:22:05,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:05,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370006363] [2020-10-13 10:22:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:22:06,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-10-13 10:22:06,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:06,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:22:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,029 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-10-13 10:22:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:07,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:07,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:07,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:07,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:07,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370006363] [2020-10-13 10:22:07,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:07,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:07,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138221531] [2020-10-13 10:22:07,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:07,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:07,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:07,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:07,360 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand 11 states. [2020-10-13 10:22:07,715 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-13 10:22:07,955 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2020-10-13 10:22:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:09,098 INFO L93 Difference]: Finished difference Result 354 states and 396 transitions. [2020-10-13 10:22:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:09,099 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-13 10:22:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:09,100 INFO L225 Difference]: With dead ends: 354 [2020-10-13 10:22:09,101 INFO L226 Difference]: Without dead ends: 352 [2020-10-13 10:22:09,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:22:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-13 10:22:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 273. [2020-10-13 10:22:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-13 10:22:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 306 transitions. [2020-10-13 10:22:09,123 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 306 transitions. Word has length 48 [2020-10-13 10:22:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:09,123 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 306 transitions. [2020-10-13 10:22:09,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 306 transitions. [2020-10-13 10:22:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:22:09,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:09,124 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:09,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:09,125 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:09,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1636282852, now seen corresponding path program 2 times [2020-10-13 10:22:09,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:09,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099931684] [2020-10-13 10:22:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:22:09,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:09,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-13 10:22:09,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:22:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,552 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-10-13 10:22:09,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:09,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:09,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:09,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:09,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:09,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:09,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099931684] [2020-10-13 10:22:09,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:09,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:22:09,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980480051] [2020-10-13 10:22:09,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:22:09,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:22:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:22:09,814 INFO L87 Difference]: Start difference. First operand 273 states and 306 transitions. Second operand 10 states. [2020-10-13 10:22:10,285 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-13 10:22:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:10,953 INFO L93 Difference]: Finished difference Result 381 states and 425 transitions. [2020-10-13 10:22:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:10,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-13 10:22:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:10,955 INFO L225 Difference]: With dead ends: 381 [2020-10-13 10:22:10,956 INFO L226 Difference]: Without dead ends: 318 [2020-10-13 10:22:10,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-13 10:22:10,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 287. [2020-10-13 10:22:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 10:22:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 320 transitions. [2020-10-13 10:22:10,979 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 320 transitions. Word has length 50 [2020-10-13 10:22:10,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:10,979 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 320 transitions. [2020-10-13 10:22:10,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:22:10,979 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 320 transitions. [2020-10-13 10:22:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:22:10,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:10,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:10,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:10,980 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash 897146061, now seen corresponding path program 1 times [2020-10-13 10:22:10,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:10,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863630805] [2020-10-13 10:22:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:10,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:11,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 10:22:11,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 981 [2020-10-13 10:22:11,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:22:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:22:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:12,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:12,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:22:12,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863630805] [2020-10-13 10:22:12,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:12,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:12,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512401513] [2020-10-13 10:22:12,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:12,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:12,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:12,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:12,096 INFO L87 Difference]: Start difference. First operand 287 states and 320 transitions. Second operand 9 states. [2020-10-13 10:22:12,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:12,663 INFO L93 Difference]: Finished difference Result 410 states and 455 transitions. [2020-10-13 10:22:12,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:12,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-13 10:22:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:12,665 INFO L225 Difference]: With dead ends: 410 [2020-10-13 10:22:12,665 INFO L226 Difference]: Without dead ends: 394 [2020-10-13 10:22:12,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:12,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-13 10:22:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 345. [2020-10-13 10:22:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-13 10:22:12,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 389 transitions. [2020-10-13 10:22:12,700 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 389 transitions. Word has length 53 [2020-10-13 10:22:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:12,700 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 389 transitions. [2020-10-13 10:22:12,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 389 transitions. [2020-10-13 10:22:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:22:12,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:12,701 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:12,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:12,702 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash -391245138, now seen corresponding path program 2 times [2020-10-13 10:22:12,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:12,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081234288] [2020-10-13 10:22:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 10:22:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,385 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-10-13 10:22:13,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:13,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:13,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:13,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:13,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081234288] [2020-10-13 10:22:13,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:13,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:13,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292174026] [2020-10-13 10:22:13,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:13,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:13,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:13,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:13,631 INFO L87 Difference]: Start difference. First operand 345 states and 389 transitions. Second operand 12 states. [2020-10-13 10:22:14,708 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-10-13 10:22:14,943 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-10-13 10:22:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:15,245 INFO L93 Difference]: Finished difference Result 439 states and 491 transitions. [2020-10-13 10:22:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:15,246 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-13 10:22:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:15,248 INFO L225 Difference]: With dead ends: 439 [2020-10-13 10:22:15,248 INFO L226 Difference]: Without dead ends: 437 [2020-10-13 10:22:15,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-13 10:22:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 345. [2020-10-13 10:22:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-13 10:22:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 388 transitions. [2020-10-13 10:22:15,284 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 388 transitions. Word has length 55 [2020-10-13 10:22:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:15,284 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 388 transitions. [2020-10-13 10:22:15,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 388 transitions. [2020-10-13 10:22:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:22:15,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:15,285 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:15,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:15,286 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:15,286 INFO L82 PathProgramCache]: Analyzing trace with hash 327610008, now seen corresponding path program 2 times [2020-10-13 10:22:15,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:15,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357245242] [2020-10-13 10:22:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:16,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:22:16,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-13 10:22:16,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:22:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:22:16,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:16,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:22:16,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357245242] [2020-10-13 10:22:16,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:16,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:16,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594292976] [2020-10-13 10:22:16,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:16,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:16,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:16,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:16,247 INFO L87 Difference]: Start difference. First operand 345 states and 388 transitions. Second operand 9 states. [2020-10-13 10:22:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:16,720 INFO L93 Difference]: Finished difference Result 518 states and 581 transitions. [2020-10-13 10:22:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:16,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-13 10:22:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:16,722 INFO L225 Difference]: With dead ends: 518 [2020-10-13 10:22:16,722 INFO L226 Difference]: Without dead ends: 441 [2020-10-13 10:22:16,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-13 10:22:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 350. [2020-10-13 10:22:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-13 10:22:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 393 transitions. [2020-10-13 10:22:16,756 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 393 transitions. Word has length 56 [2020-10-13 10:22:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:16,756 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 393 transitions. [2020-10-13 10:22:16,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 393 transitions. [2020-10-13 10:22:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:16,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:16,757 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:16,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:16,757 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:16,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:16,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1677756292, now seen corresponding path program 3 times [2020-10-13 10:22:16,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:16,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91496584] [2020-10-13 10:22:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:17,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:17,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-13 10:22:17,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:17,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:22:17,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:17,732 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 39 [2020-10-13 10:22:18,062 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2020-10-13 10:22:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:18,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:18,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:18,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:18,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:18,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91496584] [2020-10-13 10:22:18,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:18,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:18,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764479028] [2020-10-13 10:22:18,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:18,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:18,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:18,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:18,431 INFO L87 Difference]: Start difference. First operand 350 states and 393 transitions. Second operand 11 states. [2020-10-13 10:22:18,891 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2020-10-13 10:22:19,231 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-13 10:22:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:19,956 INFO L93 Difference]: Finished difference Result 610 states and 689 transitions. [2020-10-13 10:22:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:19,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 10:22:19,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:19,963 INFO L225 Difference]: With dead ends: 610 [2020-10-13 10:22:19,963 INFO L226 Difference]: Without dead ends: 494 [2020-10-13 10:22:19,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-13 10:22:20,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 405. [2020-10-13 10:22:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-10-13 10:22:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 455 transitions. [2020-10-13 10:22:20,005 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 455 transitions. Word has length 57 [2020-10-13 10:22:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:20,005 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 455 transitions. [2020-10-13 10:22:20,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 455 transitions. [2020-10-13 10:22:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:20,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:20,006 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:20,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:20,007 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:20,007 INFO L82 PathProgramCache]: Analyzing trace with hash -550383868, now seen corresponding path program 1 times [2020-10-13 10:22:20,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:20,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385456477] [2020-10-13 10:22:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:22,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:22,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:22,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-13 10:22:22,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:22,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:22:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:22,319 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-10-13 10:22:22,493 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2020-10-13 10:22:22,902 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2020-10-13 10:22:23,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:23,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:23,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:23,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385456477] [2020-10-13 10:22:23,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:23,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:23,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433154946] [2020-10-13 10:22:23,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:23,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:23,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:23,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:23,268 INFO L87 Difference]: Start difference. First operand 405 states and 455 transitions. Second operand 13 states. [2020-10-13 10:22:23,746 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-13 10:22:24,088 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-13 10:22:24,610 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 97 [2020-10-13 10:22:25,020 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-10-13 10:22:26,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:26,195 INFO L93 Difference]: Finished difference Result 698 states and 785 transitions. [2020-10-13 10:22:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:22:26,195 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:22:26,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:26,199 INFO L225 Difference]: With dead ends: 698 [2020-10-13 10:22:26,199 INFO L226 Difference]: Without dead ends: 696 [2020-10-13 10:22:26,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:22:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-13 10:22:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 470. [2020-10-13 10:22:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-10-13 10:22:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 527 transitions. [2020-10-13 10:22:26,247 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 527 transitions. Word has length 57 [2020-10-13 10:22:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:26,247 INFO L479 AbstractCegarLoop]: Abstraction has 470 states and 527 transitions. [2020-10-13 10:22:26,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 527 transitions. [2020-10-13 10:22:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:26,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:26,249 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:26,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:22:26,249 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash 906137348, now seen corresponding path program 2 times [2020-10-13 10:22:26,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:26,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059225534] [2020-10-13 10:22:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:26,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:27,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:27,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:27,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:27,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1338 [2020-10-13 10:22:27,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:27,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:27,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:27,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:22:27,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,168 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 37 [2020-10-13 10:22:28,791 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 57 [2020-10-13 10:22:29,129 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 39 [2020-10-13 10:22:29,327 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 29 [2020-10-13 10:22:29,605 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 26 [2020-10-13 10:22:29,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:29,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:29,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:29,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:29,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:29,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:29,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:29,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059225534] [2020-10-13 10:22:29,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:29,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:29,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161234852] [2020-10-13 10:22:29,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:29,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:29,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:29,794 INFO L87 Difference]: Start difference. First operand 470 states and 527 transitions. Second operand 13 states. [2020-10-13 10:22:30,414 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-13 10:22:30,806 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 96 [2020-10-13 10:22:31,119 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-13 10:22:31,816 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2020-10-13 10:22:32,449 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-10-13 10:22:32,705 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-13 10:22:33,141 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-10-13 10:22:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:33,593 INFO L93 Difference]: Finished difference Result 777 states and 875 transitions. [2020-10-13 10:22:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:22:33,594 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:22:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:33,597 INFO L225 Difference]: With dead ends: 777 [2020-10-13 10:22:33,597 INFO L226 Difference]: Without dead ends: 775 [2020-10-13 10:22:33,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-10-13 10:22:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 486. [2020-10-13 10:22:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-13 10:22:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 547 transitions. [2020-10-13 10:22:33,649 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 547 transitions. Word has length 57 [2020-10-13 10:22:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:33,649 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 547 transitions. [2020-10-13 10:22:33,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:33,650 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 547 transitions. [2020-10-13 10:22:33,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:33,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:33,651 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:33,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:22:33,651 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:33,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1322002812, now seen corresponding path program 2 times [2020-10-13 10:22:33,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:33,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291379824] [2020-10-13 10:22:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:33,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:34,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:35,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:35,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1729 [2020-10-13 10:22:35,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:35,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:22:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:35,869 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-10-13 10:22:36,261 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2020-10-13 10:22:37,011 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 80 [2020-10-13 10:22:37,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:37,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:37,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:37,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:37,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:37,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:37,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291379824] [2020-10-13 10:22:37,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:37,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:37,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931669639] [2020-10-13 10:22:37,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:37,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:37,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:37,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:37,498 INFO L87 Difference]: Start difference. First operand 486 states and 547 transitions. Second operand 13 states. [2020-10-13 10:22:37,938 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-13 10:22:38,288 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-13 10:22:38,460 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-13 10:22:38,765 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 10:22:39,380 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2020-10-13 10:22:39,841 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 49 [2020-10-13 10:22:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:40,843 INFO L93 Difference]: Finished difference Result 773 states and 869 transitions. [2020-10-13 10:22:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:22:40,844 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:22:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:40,848 INFO L225 Difference]: With dead ends: 773 [2020-10-13 10:22:40,848 INFO L226 Difference]: Without dead ends: 771 [2020-10-13 10:22:40,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:40,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-13 10:22:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 486. [2020-10-13 10:22:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-10-13 10:22:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 547 transitions. [2020-10-13 10:22:40,899 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 547 transitions. Word has length 57 [2020-10-13 10:22:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:40,899 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 547 transitions. [2020-10-13 10:22:40,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 547 transitions. [2020-10-13 10:22:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:40,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:40,900 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:40,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:22:40,901 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:40,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:40,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1703436781, now seen corresponding path program 1 times [2020-10-13 10:22:40,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:40,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149241668] [2020-10-13 10:22:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:42,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:42,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:42,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-13 10:22:42,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:42,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:42,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:22:42,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:42,796 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 42 [2020-10-13 10:22:43,091 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 43 [2020-10-13 10:22:43,687 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2020-10-13 10:22:43,830 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 30 [2020-10-13 10:22:44,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:44,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:44,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:44,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:44,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:44,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:44,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:44,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:44,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:44,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149241668] [2020-10-13 10:22:44,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:44,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:44,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160358063] [2020-10-13 10:22:44,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:44,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:44,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:44,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:44,157 INFO L87 Difference]: Start difference. First operand 486 states and 547 transitions. Second operand 13 states. [2020-10-13 10:22:44,541 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-13 10:22:44,792 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2020-10-13 10:22:45,081 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-13 10:22:45,470 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-13 10:22:45,725 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-13 10:22:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:46,920 INFO L93 Difference]: Finished difference Result 752 states and 847 transitions. [2020-10-13 10:22:46,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:22:46,920 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 10:22:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:46,923 INFO L225 Difference]: With dead ends: 752 [2020-10-13 10:22:46,923 INFO L226 Difference]: Without dead ends: 750 [2020-10-13 10:22:46,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-13 10:22:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 545. [2020-10-13 10:22:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-10-13 10:22:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 611 transitions. [2020-10-13 10:22:46,985 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 611 transitions. Word has length 60 [2020-10-13 10:22:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:46,986 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 611 transitions. [2020-10-13 10:22:46,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:46,986 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 611 transitions. [2020-10-13 10:22:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:46,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:46,990 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:46,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:22:46,990 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:46,992 INFO L82 PathProgramCache]: Analyzing trace with hash 872391149, now seen corresponding path program 2 times [2020-10-13 10:22:46,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:46,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357400445] [2020-10-13 10:22:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:47,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:48,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:48,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-10-13 10:22:48,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:22:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:49,408 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 34 [2020-10-13 10:22:50,018 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 70 [2020-10-13 10:22:50,200 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 40 [2020-10-13 10:22:50,538 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-10-13 10:22:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:50,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:50,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:50,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:50,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:50,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:50,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:50,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357400445] [2020-10-13 10:22:50,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:50,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:50,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813318923] [2020-10-13 10:22:50,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:50,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:50,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:50,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:50,694 INFO L87 Difference]: Start difference. First operand 545 states and 611 transitions. Second operand 13 states. [2020-10-13 10:22:50,849 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-13 10:22:51,366 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-13 10:22:51,711 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2020-10-13 10:22:52,400 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-13 10:22:52,863 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-10-13 10:22:53,058 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-10-13 10:22:53,474 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-13 10:22:53,691 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-13 10:22:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:53,928 INFO L93 Difference]: Finished difference Result 754 states and 847 transitions. [2020-10-13 10:22:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:22:53,929 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 10:22:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:53,931 INFO L225 Difference]: With dead ends: 754 [2020-10-13 10:22:53,931 INFO L226 Difference]: Without dead ends: 752 [2020-10-13 10:22:53,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:22:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-13 10:22:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 545. [2020-10-13 10:22:53,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-10-13 10:22:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 611 transitions. [2020-10-13 10:22:53,992 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 611 transitions. Word has length 60 [2020-10-13 10:22:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:53,992 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 611 transitions. [2020-10-13 10:22:53,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 611 transitions. [2020-10-13 10:22:53,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:53,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:53,994 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:53,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:22:53,994 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:53,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1068444269, now seen corresponding path program 2 times [2020-10-13 10:22:53,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:53,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842048118] [2020-10-13 10:22:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:54,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:56,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:56,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:56,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2248 [2020-10-13 10:22:56,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:56,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:22:56,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:56,580 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2020-10-13 10:22:56,907 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2020-10-13 10:22:57,486 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 70 [2020-10-13 10:22:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:57,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:57,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:57,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:57,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:57,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:57,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:57,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842048118] [2020-10-13 10:22:57,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:57,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:57,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053807128] [2020-10-13 10:22:57,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:57,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:57,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:57,977 INFO L87 Difference]: Start difference. First operand 545 states and 611 transitions. Second operand 13 states. [2020-10-13 10:22:58,399 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-13 10:22:58,713 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-13 10:22:58,885 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-13 10:22:59,184 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-13 10:22:59,734 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 102 [2020-10-13 10:23:00,115 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2020-10-13 10:23:00,397 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-13 10:23:00,807 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-13 10:23:01,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:01,184 INFO L93 Difference]: Finished difference Result 760 states and 853 transitions. [2020-10-13 10:23:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:23:01,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 10:23:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:01,187 INFO L225 Difference]: With dead ends: 760 [2020-10-13 10:23:01,187 INFO L226 Difference]: Without dead ends: 758 [2020-10-13 10:23:01,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:23:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-13 10:23:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 492. [2020-10-13 10:23:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-13 10:23:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 553 transitions. [2020-10-13 10:23:01,243 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 553 transitions. Word has length 60 [2020-10-13 10:23:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:01,243 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 553 transitions. [2020-10-13 10:23:01,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 553 transitions. [2020-10-13 10:23:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:23:01,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:01,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:01,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:23:01,245 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash 909820675, now seen corresponding path program 4 times [2020-10-13 10:23:01,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:01,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141871774] [2020-10-13 10:23:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:01,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:02,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:23:02,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:23:02,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-13 10:23:02,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:23:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:23:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:03,021 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-10-13 10:23:03,226 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-13 10:23:03,429 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 39 [2020-10-13 10:23:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:03,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:03,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:03,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:03,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:03,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:03,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141871774] [2020-10-13 10:23:03,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:03,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:03,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144879285] [2020-10-13 10:23:03,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:03,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:03,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:03,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:03,826 INFO L87 Difference]: Start difference. First operand 492 states and 553 transitions. Second operand 13 states. [2020-10-13 10:23:04,262 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-13 10:23:04,612 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-13 10:23:05,028 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-13 10:23:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:06,301 INFO L93 Difference]: Finished difference Result 695 states and 782 transitions. [2020-10-13 10:23:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:06,302 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-13 10:23:06,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:06,304 INFO L225 Difference]: With dead ends: 695 [2020-10-13 10:23:06,305 INFO L226 Difference]: Without dead ends: 627 [2020-10-13 10:23:06,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:23:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-13 10:23:06,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 543. [2020-10-13 10:23:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-10-13 10:23:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 609 transitions. [2020-10-13 10:23:06,367 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 609 transitions. Word has length 62 [2020-10-13 10:23:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:06,368 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 609 transitions. [2020-10-13 10:23:06,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 609 transitions. [2020-10-13 10:23:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:23:06,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:06,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:06,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:23:06,370 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash 338307971, now seen corresponding path program 3 times [2020-10-13 10:23:06,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:06,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402325115] [2020-10-13 10:23:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:06,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:06,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:08,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1718 [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 10:23:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,437 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-10-13 10:23:08,703 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2020-10-13 10:23:09,242 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-13 10:23:09,408 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-13 10:23:09,573 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2020-10-13 10:23:09,704 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-10-13 10:23:09,848 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-10-13 10:23:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:10,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:10,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:10,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:10,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:10,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:10,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:10,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402325115] [2020-10-13 10:23:10,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:10,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:23:10,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357102172] [2020-10-13 10:23:10,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:23:10,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:10,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:23:10,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:23:10,060 INFO L87 Difference]: Start difference. First operand 543 states and 609 transitions. Second operand 14 states. [2020-10-13 10:23:10,795 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2020-10-13 10:23:11,323 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 96 [2020-10-13 10:23:11,837 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2020-10-13 10:23:12,097 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-10-13 10:23:12,334 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2020-10-13 10:23:13,513 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-10-13 10:23:13,976 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-13 10:23:14,224 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-10-13 10:23:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:14,562 INFO L93 Difference]: Finished difference Result 895 states and 1006 transitions. [2020-10-13 10:23:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:23:14,562 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-13 10:23:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:14,565 INFO L225 Difference]: With dead ends: 895 [2020-10-13 10:23:14,565 INFO L226 Difference]: Without dead ends: 893 [2020-10-13 10:23:14,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:23:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-10-13 10:23:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 648. [2020-10-13 10:23:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-13 10:23:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 725 transitions. [2020-10-13 10:23:14,652 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 725 transitions. Word has length 62 [2020-10-13 10:23:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:14,652 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 725 transitions. [2020-10-13 10:23:14,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:23:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 725 transitions. [2020-10-13 10:23:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:23:14,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:14,654 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:14,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:23:14,654 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:14,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:14,655 INFO L82 PathProgramCache]: Analyzing trace with hash 567372675, now seen corresponding path program 4 times [2020-10-13 10:23:14,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:14,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283237197] [2020-10-13 10:23:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:16,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:23:16,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:23:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2178 [2020-10-13 10:23:16,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:23:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:16,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:16,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:17,675 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 49 [2020-10-13 10:23:18,282 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 70 [2020-10-13 10:23:18,998 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 54 [2020-10-13 10:23:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:19,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:19,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:19,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:19,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:19,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:19,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:19,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283237197] [2020-10-13 10:23:19,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:19,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:19,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520733294] [2020-10-13 10:23:19,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:19,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:19,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:19,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:19,333 INFO L87 Difference]: Start difference. First operand 648 states and 725 transitions. Second operand 13 states. [2020-10-13 10:23:19,725 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 68 [2020-10-13 10:23:20,149 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 71 [2020-10-13 10:23:20,449 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-10-13 10:23:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:21,355 INFO L93 Difference]: Finished difference Result 863 states and 963 transitions. [2020-10-13 10:23:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:23:21,356 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-13 10:23:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:21,359 INFO L225 Difference]: With dead ends: 863 [2020-10-13 10:23:21,359 INFO L226 Difference]: Without dead ends: 787 [2020-10-13 10:23:21,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:21,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-10-13 10:23:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 687. [2020-10-13 10:23:21,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-10-13 10:23:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 767 transitions. [2020-10-13 10:23:21,425 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 767 transitions. Word has length 62 [2020-10-13 10:23:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:21,425 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 767 transitions. [2020-10-13 10:23:21,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 767 transitions. [2020-10-13 10:23:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:23:21,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:21,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:21,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:23:21,447 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:21,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:21,448 INFO L82 PathProgramCache]: Analyzing trace with hash -4140029, now seen corresponding path program 3 times [2020-10-13 10:23:21,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:21,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998302289] [2020-10-13 10:23:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:21,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:21,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:23,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:24,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:24,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:23:24,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:23:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3000 [2020-10-13 10:23:24,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:23:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:25,111 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 38 [2020-10-13 10:23:25,758 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 62 [2020-10-13 10:23:26,567 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 71 [2020-10-13 10:23:26,747 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-10-13 10:23:26,889 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-10-13 10:23:27,038 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-10-13 10:23:27,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:27,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:27,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:27,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:27,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:27,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998302289] [2020-10-13 10:23:27,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:27,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:27,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367259873] [2020-10-13 10:23:27,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:27,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:27,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:27,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:27,292 INFO L87 Difference]: Start difference. First operand 687 states and 767 transitions. Second operand 13 states. [2020-10-13 10:23:27,764 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-13 10:23:28,120 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-13 10:23:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:29,330 INFO L93 Difference]: Finished difference Result 847 states and 945 transitions. [2020-10-13 10:23:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:23:29,331 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-13 10:23:29,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:29,334 INFO L225 Difference]: With dead ends: 847 [2020-10-13 10:23:29,334 INFO L226 Difference]: Without dead ends: 771 [2020-10-13 10:23:29,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:29,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-13 10:23:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 648. [2020-10-13 10:23:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-13 10:23:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 723 transitions. [2020-10-13 10:23:29,390 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 723 transitions. Word has length 62 [2020-10-13 10:23:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:29,390 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 723 transitions. [2020-10-13 10:23:29,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 723 transitions. [2020-10-13 10:23:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:23:29,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:29,391 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:29,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:23:29,392 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:29,392 INFO L82 PathProgramCache]: Analyzing trace with hash 679696195, now seen corresponding path program 1 times [2020-10-13 10:23:29,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:29,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479474985] [2020-10-13 10:23:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:29,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:34,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:34,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 10:23:34,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:23:34,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 10:23:34,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:34,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:23:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:23:34,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:23:34,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:34,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:34,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:23:34,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479474985] [2020-10-13 10:23:34,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:34,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:23:34,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977711543] [2020-10-13 10:23:34,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:23:34,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:34,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:23:34,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:23:34,566 INFO L87 Difference]: Start difference. First operand 648 states and 723 transitions. Second operand 11 states. [2020-10-13 10:23:35,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:35,406 INFO L93 Difference]: Finished difference Result 708 states and 785 transitions. [2020-10-13 10:23:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:23:35,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-13 10:23:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:35,409 INFO L225 Difference]: With dead ends: 708 [2020-10-13 10:23:35,410 INFO L226 Difference]: Without dead ends: 706 [2020-10-13 10:23:35,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:35,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-13 10:23:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 664. [2020-10-13 10:23:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-10-13 10:23:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 740 transitions. [2020-10-13 10:23:35,465 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 740 transitions. Word has length 64 [2020-10-13 10:23:35,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:35,465 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 740 transitions. [2020-10-13 10:23:35,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:23:35,465 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 740 transitions. [2020-10-13 10:23:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:23:35,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:35,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:35,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:23:35,467 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:35,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:35,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1751367410, now seen corresponding path program 3 times [2020-10-13 10:23:35,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:35,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800251824] [2020-10-13 10:23:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:23:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 875 [2020-10-13 10:23:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:23:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:23:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:36,602 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-13 10:23:36,719 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-13 10:23:37,322 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 81 [2020-10-13 10:23:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:37,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:37,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:37,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:37,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:37,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:37,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800251824] [2020-10-13 10:23:37,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:37,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:23:37,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799459939] [2020-10-13 10:23:37,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:23:37,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:37,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:23:37,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:23:37,897 INFO L87 Difference]: Start difference. First operand 664 states and 740 transitions. Second operand 14 states. [2020-10-13 10:23:38,299 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2020-10-13 10:23:38,792 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-10-13 10:23:39,407 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-10-13 10:23:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:41,433 INFO L93 Difference]: Finished difference Result 888 states and 992 transitions. [2020-10-13 10:23:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:23:41,434 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-13 10:23:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:41,437 INFO L225 Difference]: With dead ends: 888 [2020-10-13 10:23:41,437 INFO L226 Difference]: Without dead ends: 886 [2020-10-13 10:23:41,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:23:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2020-10-13 10:23:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 676. [2020-10-13 10:23:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-10-13 10:23:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 752 transitions. [2020-10-13 10:23:41,493 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 752 transitions. Word has length 65 [2020-10-13 10:23:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:41,493 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 752 transitions. [2020-10-13 10:23:41,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:23:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 752 transitions. [2020-10-13 10:23:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 10:23:41,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:41,495 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:41,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:23:41,495 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:41,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1055186660, now seen corresponding path program 5 times [2020-10-13 10:23:41,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:41,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481157806] [2020-10-13 10:23:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:41,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:42,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:23:42,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-13 10:23:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:23:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:23:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:42,676 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-13 10:23:42,946 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2020-10-13 10:23:43,170 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-13 10:23:43,313 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-13 10:23:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:43,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:43,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:43,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:43,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:43,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:43,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:43,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:43,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:43,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:43,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481157806] [2020-10-13 10:23:43,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:43,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:23:43,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117058441] [2020-10-13 10:23:43,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:23:43,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:43,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:23:43,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:23:43,708 INFO L87 Difference]: Start difference. First operand 676 states and 752 transitions. Second operand 14 states. [2020-10-13 10:23:43,874 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-13 10:23:44,350 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2020-10-13 10:23:44,699 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 10:23:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:45,714 INFO L93 Difference]: Finished difference Result 906 states and 1010 transitions. [2020-10-13 10:23:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:23:45,714 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-13 10:23:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:45,717 INFO L225 Difference]: With dead ends: 906 [2020-10-13 10:23:45,717 INFO L226 Difference]: Without dead ends: 788 [2020-10-13 10:23:45,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:23:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-10-13 10:23:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 704. [2020-10-13 10:23:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-13 10:23:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 780 transitions. [2020-10-13 10:23:45,777 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 780 transitions. Word has length 67 [2020-10-13 10:23:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:45,778 INFO L479 AbstractCegarLoop]: Abstraction has 704 states and 780 transitions. [2020-10-13 10:23:45,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:23:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 780 transitions. [2020-10-13 10:23:45,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 10:23:45,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:45,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-13 10:23:45,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:23:45,779 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1937253784, now seen corresponding path program 1 times [2020-10-13 10:23:45,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:45,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891258037] [2020-10-13 10:23:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:45,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:46,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:47,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:47,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:48,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:48,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:23:48,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:23:48,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2265 [2020-10-13 10:23:48,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:23:48,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:23:48,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:23:48,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:48,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:48,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:48,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:48,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:48,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:48,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:23:48,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891258037] [2020-10-13 10:23:48,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:48,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:23:48,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509415950] [2020-10-13 10:23:48,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:23:48,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:48,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:23:48,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:23:48,211 INFO L87 Difference]: Start difference. First operand 704 states and 780 transitions. Second operand 11 states. [2020-10-13 10:23:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:49,023 INFO L93 Difference]: Finished difference Result 726 states and 798 transitions. [2020-10-13 10:23:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:23:49,024 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 10:23:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:49,026 INFO L225 Difference]: With dead ends: 726 [2020-10-13 10:23:49,026 INFO L226 Difference]: Without dead ends: 687 [2020-10-13 10:23:49,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-10-13 10:23:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 666. [2020-10-13 10:23:49,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-10-13 10:23:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 737 transitions. [2020-10-13 10:23:49,084 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 737 transitions. Word has length 67 [2020-10-13 10:23:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:49,084 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 737 transitions. [2020-10-13 10:23:49,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:23:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 737 transitions. [2020-10-13 10:23:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:23:49,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:49,085 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:49,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:23:49,086 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash 766793789, now seen corresponding path program 5 times [2020-10-13 10:23:49,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:49,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221543095] [2020-10-13 10:23:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:49,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:49,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:49,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:51,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:51,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:23:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:23:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-10-13 10:23:51,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:23:51,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:52,165 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-13 10:23:52,348 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-13 10:23:52,792 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2020-10-13 10:23:53,224 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-13 10:23:53,855 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 64 [2020-10-13 10:23:54,045 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-13 10:23:54,193 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2020-10-13 10:23:54,348 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2020-10-13 10:23:54,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:54,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:54,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:54,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:54,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:54,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:54,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221543095] [2020-10-13 10:23:54,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:54,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:54,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049270878] [2020-10-13 10:23:54,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:54,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:54,580 INFO L87 Difference]: Start difference. First operand 666 states and 737 transitions. Second operand 15 states. [2020-10-13 10:23:55,069 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-13 10:23:55,446 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-13 10:23:56,049 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 97 [2020-10-13 10:23:56,895 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 108 [2020-10-13 10:23:57,451 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 108 [2020-10-13 10:23:57,993 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-13 10:23:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:59,132 INFO L93 Difference]: Finished difference Result 918 states and 1020 transitions. [2020-10-13 10:23:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:23:59,133 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:23:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:59,136 INFO L225 Difference]: With dead ends: 918 [2020-10-13 10:23:59,136 INFO L226 Difference]: Without dead ends: 916 [2020-10-13 10:23:59,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-13 10:23:59,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 719. [2020-10-13 10:23:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-13 10:23:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 795 transitions. [2020-10-13 10:23:59,213 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 795 transitions. Word has length 69 [2020-10-13 10:23:59,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:59,214 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 795 transitions. [2020-10-13 10:23:59,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 795 transitions. [2020-10-13 10:23:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:23:59,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:59,216 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:59,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:23:59,216 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:59,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2071652291, now seen corresponding path program 6 times [2020-10-13 10:23:59,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:59,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961196143] [2020-10-13 10:23:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:01,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:01,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:24:01,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:24:01,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2755 [2020-10-13 10:24:01,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:01,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:01,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:24:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:02,858 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 55 [2020-10-13 10:24:03,490 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 60 [2020-10-13 10:24:04,259 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 54 [2020-10-13 10:24:05,187 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 63 [2020-10-13 10:24:05,630 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-10-13 10:24:06,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:06,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:06,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:06,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:06,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:06,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:06,152 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:06,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961196143] [2020-10-13 10:24:06,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:06,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:06,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213513695] [2020-10-13 10:24:06,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:06,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:06,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:06,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:06,153 INFO L87 Difference]: Start difference. First operand 719 states and 795 transitions. Second operand 15 states. [2020-10-13 10:24:06,513 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 34 [2020-10-13 10:24:06,798 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2020-10-13 10:24:07,202 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 73 [2020-10-13 10:24:07,795 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 73 [2020-10-13 10:24:08,284 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 96 [2020-10-13 10:24:08,781 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 95 [2020-10-13 10:24:09,287 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-13 10:24:09,882 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 48 [2020-10-13 10:24:10,063 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2020-10-13 10:24:10,404 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2020-10-13 10:24:10,646 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 62 [2020-10-13 10:24:10,827 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-13 10:24:11,470 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 58 [2020-10-13 10:24:11,700 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 62 [2020-10-13 10:24:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:12,064 INFO L93 Difference]: Finished difference Result 1048 states and 1166 transitions. [2020-10-13 10:24:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:12,065 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:24:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:12,070 INFO L225 Difference]: With dead ends: 1048 [2020-10-13 10:24:12,070 INFO L226 Difference]: Without dead ends: 1046 [2020-10-13 10:24:12,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-10-13 10:24:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 735. [2020-10-13 10:24:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-13 10:24:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 815 transitions. [2020-10-13 10:24:12,137 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 815 transitions. Word has length 69 [2020-10-13 10:24:12,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:12,137 INFO L479 AbstractCegarLoop]: Abstraction has 735 states and 815 transitions. [2020-10-13 10:24:12,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 815 transitions. [2020-10-13 10:24:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:24:12,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:12,138 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:12,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:24:12,139 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash -4825155, now seen corresponding path program 7 times [2020-10-13 10:24:12,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:12,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213571503] [2020-10-13 10:24:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:12,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:14,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:15,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3453 [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:24:15,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:16,489 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2020-10-13 10:24:16,785 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 48 [2020-10-13 10:24:17,432 WARN L193 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 68 [2020-10-13 10:24:18,434 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 64 [2020-10-13 10:24:20,182 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 373 DAG size of output: 111 [2020-10-13 10:24:20,345 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-10-13 10:24:20,556 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 30 [2020-10-13 10:24:20,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:20,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:20,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:20,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:20,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213571503] [2020-10-13 10:24:20,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:20,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:20,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072701478] [2020-10-13 10:24:20,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:20,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:20,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:20,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:20,906 INFO L87 Difference]: Start difference. First operand 735 states and 815 transitions. Second operand 15 states. [2020-10-13 10:24:21,432 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-13 10:24:21,782 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2020-10-13 10:24:22,139 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-13 10:24:22,678 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-13 10:24:23,289 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2020-10-13 10:24:23,866 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-13 10:24:24,182 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-13 10:24:24,857 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2020-10-13 10:24:25,414 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 119 [2020-10-13 10:24:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:26,721 INFO L93 Difference]: Finished difference Result 1046 states and 1162 transitions. [2020-10-13 10:24:26,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:24:26,721 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:24:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:26,726 INFO L225 Difference]: With dead ends: 1046 [2020-10-13 10:24:26,726 INFO L226 Difference]: Without dead ends: 1044 [2020-10-13 10:24:26,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-10-13 10:24:26,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 735. [2020-10-13 10:24:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2020-10-13 10:24:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 815 transitions. [2020-10-13 10:24:26,795 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 815 transitions. Word has length 69 [2020-10-13 10:24:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:26,795 INFO L479 AbstractCegarLoop]: Abstraction has 735 states and 815 transitions. [2020-10-13 10:24:26,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 815 transitions. [2020-10-13 10:24:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:24:26,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:26,796 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:26,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:24:26,797 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:26,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1748359229, now seen corresponding path program 8 times [2020-10-13 10:24:26,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:26,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331265079] [2020-10-13 10:24:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:28,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2085 [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:24:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:29,696 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 34 [2020-10-13 10:24:30,466 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2020-10-13 10:24:31,473 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 95 [2020-10-13 10:24:32,309 WARN L193 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 72 [2020-10-13 10:24:32,511 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 41 [2020-10-13 10:24:32,669 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-10-13 10:24:32,898 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2020-10-13 10:24:33,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:33,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:33,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:33,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:24:33,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:33,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331265079] [2020-10-13 10:24:33,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:33,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:33,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911215418] [2020-10-13 10:24:33,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:33,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:33,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:33,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:33,144 INFO L87 Difference]: Start difference. First operand 735 states and 815 transitions. Second operand 15 states. [2020-10-13 10:24:33,876 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-13 10:24:34,065 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-13 10:24:34,752 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-10-13 10:24:35,103 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2020-10-13 10:24:35,353 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-13 10:24:35,774 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2020-10-13 10:24:36,382 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-13 10:24:36,933 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-13 10:24:37,258 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-10-13 10:24:37,504 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-10-13 10:24:37,869 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 64 [2020-10-13 10:24:38,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:38,498 INFO L93 Difference]: Finished difference Result 1092 states and 1214 transitions. [2020-10-13 10:24:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:38,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:24:38,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:38,503 INFO L225 Difference]: With dead ends: 1092 [2020-10-13 10:24:38,503 INFO L226 Difference]: Without dead ends: 1090 [2020-10-13 10:24:38,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:24:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2020-10-13 10:24:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 767. [2020-10-13 10:24:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-13 10:24:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 855 transitions. [2020-10-13 10:24:38,576 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 855 transitions. Word has length 69 [2020-10-13 10:24:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:38,576 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 855 transitions. [2020-10-13 10:24:38,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 855 transitions. [2020-10-13 10:24:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:24:38,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:38,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:38,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:24:38,578 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:38,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:38,578 INFO L82 PathProgramCache]: Analyzing trace with hash -479780931, now seen corresponding path program 9 times [2020-10-13 10:24:38,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:38,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515030461] [2020-10-13 10:24:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2835 [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:24:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:42,384 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 33 [2020-10-13 10:24:43,120 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 60 [2020-10-13 10:24:44,104 WARN L193 SmtUtils]: Spent 834.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 72 [2020-10-13 10:24:45,118 WARN L193 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 121 [2020-10-13 10:24:46,198 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 243 DAG size of output: 112 [2020-10-13 10:24:46,414 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-10-13 10:24:46,579 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-10-13 10:24:46,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:46,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:46,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:46,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:46,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:46,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:46,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:46,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515030461] [2020-10-13 10:24:46,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:46,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:46,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502552413] [2020-10-13 10:24:46,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:46,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:46,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:46,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:46,952 INFO L87 Difference]: Start difference. First operand 767 states and 855 transitions. Second operand 15 states. [2020-10-13 10:24:47,395 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-13 10:24:47,724 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-13 10:24:48,032 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-13 10:24:48,745 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 121 [2020-10-13 10:24:50,088 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 175 DAG size of output: 147 [2020-10-13 10:24:50,766 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 133 [2020-10-13 10:24:51,156 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-13 10:24:51,452 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-13 10:24:52,061 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 151 [2020-10-13 10:24:52,602 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 132