/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 SingleStatement --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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:02:48,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:02:48,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:02:48,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:02:48,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:02:48,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:02:48,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:02:48,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:02:48,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:02:48,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:02:48,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:02:48,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:02:48,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:02:48,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:02:48,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:02:48,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:02:48,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:02:48,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:02:48,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:02:48,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:02:48,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:02:48,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:02:48,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:02:48,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:02:48,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:02:48,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:02:48,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:02:48,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:02:48,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:02:48,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:02:48,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:02:48,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:02:48,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:02:48,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:02:48,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:02:48,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:02:48,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:02:48,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:02:48,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:02:48,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:02:48,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:02:48,125 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 [2020-09-25 03:02:48,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:02:48,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:02:48,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:02:48,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:02:48,154 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:02:48,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:02:48,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:02:48,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:02:48,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:02:48,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:02:48,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:02:48,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:02:48,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:02:48,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:02:48,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:02:48,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:02:48,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:02:48,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:02:48,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:02:48,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:02:48,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:02:48,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:02:48,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:02:48,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:02:48,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:02:48,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:02:48,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:02:48,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:02:48,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:02:48,160 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 -> SingleStatement 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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=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=WIDEST;log-additional-information=true; [2020-09-25 03:02:48,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:02:48,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:02:48,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:02:48,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:02:48,674 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:02:48,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-09-25 03:02:48,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a798ee8d4/ba915a0ef16f449aa4d6553494f6efc8/FLAGf47dccec5 [2020-09-25 03:02:49,416 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:02:49,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2020-09-25 03:02:49,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a798ee8d4/ba915a0ef16f449aa4d6553494f6efc8/FLAGf47dccec5 [2020-09-25 03:02:49,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a798ee8d4/ba915a0ef16f449aa4d6553494f6efc8 [2020-09-25 03:02:49,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:02:49,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:02:49,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:02:49,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:02:49,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:02:49,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:02:49" (1/1) ... [2020-09-25 03:02:49,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc06ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:49, skipping insertion in model container [2020-09-25 03:02:49,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:02:49" (1/1) ... [2020-09-25 03:02:49,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:02:49,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:02:50,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:02:50,344 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:02:50,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:02:50,510 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:02:50,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50 WrapperNode [2020-09-25 03:02:50,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:02:50,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:02:50,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:02:50,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:02:50,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (1/1) ... [2020-09-25 03:02:50,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (1/1) ... [2020-09-25 03:02:50,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (1/1) ... [2020-09-25 03:02:50,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (1/1) ... [2020-09-25 03:02:50,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (1/1) ... [2020-09-25 03:02:50,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (1/1) ... [2020-09-25 03:02:50,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (1/1) ... [2020-09-25 03:02:50,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:02:50,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:02:50,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:02:50,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:02:50,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (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 [2020-09-25 03:02:50,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:02:50,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:02:50,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 03:02:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 03:02:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 03:02:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 03:02:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 03:02:50,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 03:02:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 03:02:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 03:02:50,776 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 03:02:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 03:02:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 03:02:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 03:02:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:02:50,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 03:02:50,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 03:02:50,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 03:02:50,778 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 03:02:50,778 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 03:02:50,778 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 03:02:50,779 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 03:02:50,779 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 03:02:50,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 03:02:50,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 03:02:50,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 03:02:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 03:02:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 03:02:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 03:02:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 03:02:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 03:02:50,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 03:02:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 03:02:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 03:02:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 03:02:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 03:02:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 03:02:50,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 03:02:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 03:02:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 03:02:50,782 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 03:02:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:02:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:02:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 03:02:50,782 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 03:02:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:02:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:02:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 03:02:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:02:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:02:50,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:02:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:02:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 03:02:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:02:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 03:02:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 03:02:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:02:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 03:02:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 03:02:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:02:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 03:02:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 03:02:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 03:02:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 03:02:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 03:02:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 03:02:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 03:02:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 03:02:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 03:02:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 03:02:50,786 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 03:02:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 03:02:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 03:02:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 03:02:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 03:02:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 03:02:50,787 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 03:02:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:02:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 03:02:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 03:02:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 03:02:50,788 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 03:02:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 03:02:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 03:02:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 03:02:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 03:02:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 03:02:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 03:02:50,789 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 03:02:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 03:02:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 03:02:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 03:02:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 03:02:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:02:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 03:02:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:02:52,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:02:52,031 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 03:02:52,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:02:52 BoogieIcfgContainer [2020-09-25 03:02:52,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:02:52,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:02:52,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:02:52,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:02:52,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:02:49" (1/3) ... [2020-09-25 03:02:52,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b963d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:02:52, skipping insertion in model container [2020-09-25 03:02:52,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:02:50" (2/3) ... [2020-09-25 03:02:52,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9b963d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:02:52, skipping insertion in model container [2020-09-25 03:02:52,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:02:52" (3/3) ... [2020-09-25 03:02:52,050 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2020-09-25 03:02:52,064 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:02:52,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:02:52,103 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:02:52,142 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:02:52,142 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:02:52,143 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:02:52,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:02:52,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:02:52,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:02:52,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:02:52,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:02:52,193 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-25 03:02:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 03:02:52,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:02:52,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:02:52,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:02:52,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:02:52,243 INFO L82 PathProgramCache]: Analyzing trace with hash 627708892, now seen corresponding path program 1 times [2020-09-25 03:02:52,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:02:52,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956531203] [2020-09-25 03:02:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:02:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:55,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:57,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:57,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 03:02:57,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:02:57,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-09-25 03:02:57,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:02:57,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 03:02:57,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 03:02:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 03:02:58,366 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:02:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:02:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:58,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:02:58,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:02:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-25 03:02:58,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:02:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:02:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 03:02:58,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:02:58,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:02:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:58,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:58,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:02:58,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:02:58,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:02:58,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:58,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:02:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:02:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:02:58,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:02:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:02:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:58,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:58,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:02:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:02:58,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:02:58,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:02:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:02:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:02:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:02:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:02:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:58,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:58,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:58,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:02:58,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:02:58,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:02:58,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:02:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:02:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:02:58,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:02:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:02:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:58,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:58,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:02:58,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:02:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:02:58,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:58,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:02:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:02:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:02:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:02:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 03:02:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:58,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:58,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:02:58,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:02:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:02:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:02:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:02:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:02:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:02:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 03:02:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:02:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:02:58,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:02:58,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:02:58,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:02:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:02:58,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:02:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:02:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:02:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:02:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:02:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:02:59,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956531203] [2020-09-25 03:02:59,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:02:59,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:02:59,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978014343] [2020-09-25 03:02:59,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:02:59,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:02:59,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:02:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:02:59,077 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 8 states. [2020-09-25 03:02:59,698 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:00,801 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 03:03:01,149 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 03:03:01,572 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:01,946 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:03:02,279 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:03:02,646 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:03:02,990 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:05,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:03:05,134 INFO L93 Difference]: Finished difference Result 661 states and 811 transitions. [2020-09-25 03:03:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:03:05,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-25 03:03:05,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:03:05,159 INFO L225 Difference]: With dead ends: 661 [2020-09-25 03:03:05,160 INFO L226 Difference]: Without dead ends: 456 [2020-09-25 03:03:05,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:03:05,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-09-25 03:03:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 412. [2020-09-25 03:03:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-09-25 03:03:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 464 transitions. [2020-09-25 03:03:05,310 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 464 transitions. Word has length 142 [2020-09-25 03:03:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:03:05,311 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 464 transitions. [2020-09-25 03:03:05,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:03:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 464 transitions. [2020-09-25 03:03:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 03:03:05,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:03:05,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:03:05,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:03:05,316 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:03:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:03:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1549705395, now seen corresponding path program 1 times [2020-09-25 03:03:05,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:03:05,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47025148] [2020-09-25 03:03:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:03:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:05,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:06,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:10,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 03:03:10,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:03:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:03:10,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:03:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 03:03:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 03:03:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:10,677 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:03:10,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:03:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:10,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:10,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:03:10,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 03:03:10,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:10,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 03:03:10,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:11,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:03:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:11,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:11,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:11,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:11,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:11,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:11,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:11,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:11,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:11,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:03:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:11,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:11,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:11,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:11,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:11,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:11,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:11,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:03:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:03:11,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:11,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:03:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:11,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:11,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:11,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:11,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:11,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:11,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:11,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 03:03:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:11,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:03:11,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:03:11,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:03:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 03:03:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:11,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:11,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 03:03:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:11,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:11,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:03:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:03:11,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47025148] [2020-09-25 03:03:11,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:03:11,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:03:11,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573367147] [2020-09-25 03:03:11,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:03:11,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:03:11,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:03:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:03:11,187 INFO L87 Difference]: Start difference. First operand 412 states and 464 transitions. Second operand 5 states. [2020-09-25 03:03:11,692 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:03:12,943 INFO L93 Difference]: Finished difference Result 765 states and 916 transitions. [2020-09-25 03:03:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:03:12,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 03:03:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:03:12,951 INFO L225 Difference]: With dead ends: 765 [2020-09-25 03:03:12,951 INFO L226 Difference]: Without dead ends: 463 [2020-09-25 03:03:12,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:03:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-09-25 03:03:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 408. [2020-09-25 03:03:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-09-25 03:03:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 455 transitions. [2020-09-25 03:03:13,024 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 455 transitions. Word has length 148 [2020-09-25 03:03:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:03:13,025 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 455 transitions. [2020-09-25 03:03:13,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:03:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 455 transitions. [2020-09-25 03:03:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 03:03:13,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:03:13,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:03:13,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:03:13,029 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:03:13,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:03:13,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1463355879, now seen corresponding path program 1 times [2020-09-25 03:03:13,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:03:13,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872877987] [2020-09-25 03:03:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:03:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 03:03:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:03:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 03:03:18,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:03:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 03:03:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 03:03:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:18,401 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:03:18,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:03:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:03:18,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 03:03:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 03:03:18,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:03:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:18,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:03:18,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:03:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:18,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:18,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:18,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:03:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:03:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:03:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:18,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:18,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 03:03:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:03:18,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:03:18,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:03:18,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:18,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-25 03:03:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:03:18,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:03:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:03:18,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:03:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:03:18,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:03:18,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:03:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:03:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:03:18,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:03:18,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:03:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:03:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:03:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:03:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:18,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:03:18,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:18,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:18,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:18,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 03:03:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:18,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:18,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:18,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 03:03:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:18,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:18,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:03:18,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:18,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:03:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:03:19,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872877987] [2020-09-25 03:03:19,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:03:19,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:03:19,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338661628] [2020-09-25 03:03:19,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:03:19,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:03:19,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:03:19,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:03:19,053 INFO L87 Difference]: Start difference. First operand 408 states and 455 transitions. Second operand 8 states. [2020-09-25 03:03:19,710 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:21,187 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 03:03:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:03:22,667 INFO L93 Difference]: Finished difference Result 994 states and 1255 transitions. [2020-09-25 03:03:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:03:22,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 161 [2020-09-25 03:03:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:03:22,676 INFO L225 Difference]: With dead ends: 994 [2020-09-25 03:03:22,676 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 03:03:22,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:03:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 03:03:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 573. [2020-09-25 03:03:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2020-09-25 03:03:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 660 transitions. [2020-09-25 03:03:22,771 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 660 transitions. Word has length 161 [2020-09-25 03:03:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:03:22,772 INFO L479 AbstractCegarLoop]: Abstraction has 573 states and 660 transitions. [2020-09-25 03:03:22,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:03:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 660 transitions. [2020-09-25 03:03:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 03:03:22,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:03:22,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:03:22,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:03:22,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:03:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:03:22,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1443069621, now seen corresponding path program 1 times [2020-09-25 03:03:22,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:03:22,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804470992] [2020-09-25 03:03:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:03:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:22,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:23,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:27,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 03:03:27,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:03:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 03:03:27,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:03:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 03:03:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 03:03:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,155 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 03:03:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:03:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 03:03:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 03:03:28,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 03:03:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 03:03:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:03:28,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 03:03:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:03:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 03:03:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:28,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:03:28,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 03:03:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:03:28,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 03:03:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:03:28,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:03:28,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:03:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-25 03:03:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:03:28,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:03:28,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:03:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 03:03:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 03:03:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:03:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 03:03:28,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:03:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:03:28,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:03:28,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:03:28,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:03:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 03:03:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 03:03:28,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:03:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:03:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:03:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:03:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 03:03:28,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:03:28,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:03:28,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:03:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:03:28,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:03:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:03:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:03:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 03:03:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:03:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:03:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 03:03:28,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:03:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-25 03:03:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:28,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:03:28,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:03:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-25 03:03:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:03:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:03:28,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:03:28,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:03:28,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:03:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:03:28,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:03:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:03:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:03:28,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:03:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:03:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:03:28,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804470992] [2020-09-25 03:03:28,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:03:28,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:03:28,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826285847] [2020-09-25 03:03:28,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:03:28,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:03:28,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:03:28,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:03:28,968 INFO L87 Difference]: Start difference. First operand 573 states and 660 transitions. Second operand 11 states. [2020-09-25 03:03:29,570 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 03:03:31,319 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 03:03:32,014 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 03:03:32,696 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-09-25 03:03:33,001 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 03:03:33,357 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-09-25 03:03:33,688 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:34,022 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 03:03:34,339 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 03:03:34,681 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187