/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=BIGGEST --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_spec2_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:11:10,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:11:10,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:11:10,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:11:10,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:11:10,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:11:10,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:11:10,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:11:10,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:11:10,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:11:10,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:11:10,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:11:10,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:11:10,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:11:10,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:11:10,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:11:10,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:11:10,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:11:10,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:11:10,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:11:10,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:11:10,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:11:10,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:11:10,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:11:10,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:11:10,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:11:10,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:11:10,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:11:10,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:11:10,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:11:10,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:11:10,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:11:10,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:11:10,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:11:10,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:11:10,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:11:10,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:11:10,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:11:10,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:11:10,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:11:10,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:11:10,131 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 [2020-09-24 20:11:10,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:11:10,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:11:10,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:11:10,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:11:10,185 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:11:10,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:11:10,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:11:10,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:11:10,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:11:10,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:11:10,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:11:10,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:11:10,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:11:10,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:11:10,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:11:10,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:11:10,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:11:10,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:11:10,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:11:10,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:11:10,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:11:10,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:11:10,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:11:10,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:11:10,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:11:10,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:11:10,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:11:10,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:11:10,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:11:10,192 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:11:10,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:11:10,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:11:10,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:11:10,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:11:10,674 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:11:10,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-24 20:11:10,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b3fbb67/f1f2ce9f0ccd4e618c9818319b2dfe80/FLAGe67a1d70a [2020-09-24 20:11:11,405 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:11:11,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product42.cil.c [2020-09-24 20:11:11,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b3fbb67/f1f2ce9f0ccd4e618c9818319b2dfe80/FLAGe67a1d70a [2020-09-24 20:11:11,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b3fbb67/f1f2ce9f0ccd4e618c9818319b2dfe80 [2020-09-24 20:11:11,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:11:11,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:11:11,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:11:11,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:11:11,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:11:11,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:11:11" (1/1) ... [2020-09-24 20:11:11,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:11, skipping insertion in model container [2020-09-24 20:11:11,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:11:11" (1/1) ... [2020-09-24 20:11:11,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:11:11,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:11:12,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:11:12,330 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:11:12,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:11:12,496 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:11:12,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12 WrapperNode [2020-09-24 20:11:12,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:11:12,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:11:12,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:11:12,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:11:12,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (1/1) ... [2020-09-24 20:11:12,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (1/1) ... [2020-09-24 20:11:12,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (1/1) ... [2020-09-24 20:11:12,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (1/1) ... [2020-09-24 20:11:12,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (1/1) ... [2020-09-24 20:11:12,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (1/1) ... [2020-09-24 20:11:12,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (1/1) ... [2020-09-24 20:11:12,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:11:12,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:11:12,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:11:12,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:11:12,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (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 [2020-09-24 20:11:12,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:11:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:11:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 20:11:12,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 20:11:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 20:11:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 20:11:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 20:11:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 20:11:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 20:11:12,695 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 20:11:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 20:11:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 20:11:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 20:11:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 20:11:12,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 20:11:12,697 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 20:11:12,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 20:11:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 20:11:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 20:11:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 20:11:12,698 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 20:11:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 20:11:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 20:11:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 20:11:12,699 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 20:11:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 20:11:12,700 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 20:11:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 20:11:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 20:11:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 20:11:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 20:11:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:11:12,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 20:11:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 20:11:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 20:11:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 20:11:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 20:11:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 20:11:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 20:11:12,702 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 20:11:12,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:11:12,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:11:12,704 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 20:11:12,704 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 20:11:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:11:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:11:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 20:11:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:11:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:11:12,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:11:12,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:11:12,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 20:11:12,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:11:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 20:11:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 20:11:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:11:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 20:11:12,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 20:11:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:11:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 20:11:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 20:11:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 20:11:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 20:11:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 20:11:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 20:11:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 20:11:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 20:11:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 20:11:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 20:11:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 20:11:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 20:11:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 20:11:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 20:11:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 20:11:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 20:11:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 20:11:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 20:11:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 20:11:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 20:11:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 20:11:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 20:11:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 20:11:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 20:11:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 20:11:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 20:11:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 20:11:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 20:11:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 20:11:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 20:11:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:11:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 20:11:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:11:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:11:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:11:13,916 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:11:13,916 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 20:11:13,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:11:13 BoogieIcfgContainer [2020-09-24 20:11:13,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:11:13,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:11:13,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:11:13,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:11:13,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:11:11" (1/3) ... [2020-09-24 20:11:13,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240bacf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:11:13, skipping insertion in model container [2020-09-24 20:11:13,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:11:12" (2/3) ... [2020-09-24 20:11:13,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240bacf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:11:13, skipping insertion in model container [2020-09-24 20:11:13,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:11:13" (3/3) ... [2020-09-24 20:11:13,934 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2020-09-24 20:11:13,947 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:11:13,958 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:11:13,978 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:11:14,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:11:14,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:11:14,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:11:14,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:11:14,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:11:14,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:11:14,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:11:14,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:11:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-09-24 20:11:14,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 20:11:14,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:11:14,064 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] [2020-09-24 20:11:14,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:11:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:11:14,072 INFO L82 PathProgramCache]: Analyzing trace with hash 769335885, now seen corresponding path program 1 times [2020-09-24 20:11:14,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:11:14,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406459278] [2020-09-24 20:11:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:11:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:14,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:16,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:19,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:19,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 20:11:19,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:11:19,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-24 20:11:19,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:11:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 20:11:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 20:11:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:11:20,102 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:11:20,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:11:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 20:11:20,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-24 20:11:20,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 20:11:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 20:11:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:20,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:11:20,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:20,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:11:20,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:20,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 20:11:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:20,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:11:20,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:20,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:11:20,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 20:11:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:11:20,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:11:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 20:11:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:20,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:11:20,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:11:20,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 20:11:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:11:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:11:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:11:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:20,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 20:11:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:20,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:11:20,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:11:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:11:20,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:20,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 20:11:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:20,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:20,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:20,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:20,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:11:20,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:20,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:20,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:11:20,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:11:20,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406459278] [2020-09-24 20:11:20,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:11:20,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:11:20,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600574759] [2020-09-24 20:11:20,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:11:20,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:11:20,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:11:20,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:11:20,868 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 9 states. [2020-09-24 20:11:21,551 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:11:22,668 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 20:11:23,080 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 20:11:23,478 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:23,883 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 20:11:24,244 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 20:11:25,083 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:11:25,447 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:25,966 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:11:27,086 INFO L93 Difference]: Finished difference Result 637 states and 767 transitions. [2020-09-24 20:11:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:11:27,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2020-09-24 20:11:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:11:27,112 INFO L225 Difference]: With dead ends: 637 [2020-09-24 20:11:27,112 INFO L226 Difference]: Without dead ends: 442 [2020-09-24 20:11:27,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:11:27,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-09-24 20:11:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 371. [2020-09-24 20:11:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-09-24 20:11:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 408 transitions. [2020-09-24 20:11:27,292 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 408 transitions. Word has length 148 [2020-09-24 20:11:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:11:27,295 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 408 transitions. [2020-09-24 20:11:27,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:11:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 408 transitions. [2020-09-24 20:11:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 20:11:27,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:11:27,311 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] [2020-09-24 20:11:27,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:11:27,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:11:27,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:11:27,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1213542972, now seen corresponding path program 1 times [2020-09-24 20:11:27,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:11:27,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626991264] [2020-09-24 20:11:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:11:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:27,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:29,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:32,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:32,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 20:11:32,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:11:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 20:11:32,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:11:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 20:11:32,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 20:11:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:32,719 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:11:32,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:11:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:32,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:32,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 20:11:32,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-24 20:11:32,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:32,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 20:11:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 20:11:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:33,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:11:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:11:33,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 20:11:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:33,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:11:33,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:11:33,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 20:11:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:33,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:11:33,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:11:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 20:11:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:33,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:11:33,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:11:33,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 20:11:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:11:33,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:11:33,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:11:33,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 20:11:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:11:33,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:11:33,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:11:33,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 20:11:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:11:33,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:11:33,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:11:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 20:11:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:11:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:11:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 20:11:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:33,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:33,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:33,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:33,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:11:33,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:33,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:11:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:11:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:11:33,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626991264] [2020-09-24 20:11:33,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:11:33,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:11:33,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170550166] [2020-09-24 20:11:33,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:11:33,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:11:33,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:11:33,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:11:33,267 INFO L87 Difference]: Start difference. First operand 371 states and 408 transitions. Second operand 11 states. [2020-09-24 20:11:33,887 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:11:35,472 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-24 20:11:36,102 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-24 20:11:36,520 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:36,856 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:37,199 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:38,825 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 20:11:39,358 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:39,825 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 20:11:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:11:40,530 INFO L93 Difference]: Finished difference Result 1039 states and 1314 transitions. [2020-09-24 20:11:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 20:11:40,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-09-24 20:11:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:11:40,540 INFO L225 Difference]: With dead ends: 1039 [2020-09-24 20:11:40,541 INFO L226 Difference]: Without dead ends: 783 [2020-09-24 20:11:40,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 20:11:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-09-24 20:11:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 532. [2020-09-24 20:11:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-09-24 20:11:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 605 transitions. [2020-09-24 20:11:40,652 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 605 transitions. Word has length 167 [2020-09-24 20:11:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:11:40,653 INFO L479 AbstractCegarLoop]: Abstraction has 532 states and 605 transitions. [2020-09-24 20:11:40,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:11:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 605 transitions. [2020-09-24 20:11:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-09-24 20:11:40,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:11:40,659 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:11:40,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:11:40,660 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:11:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:11:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 539838651, now seen corresponding path program 1 times [2020-09-24 20:11:40,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:11:40,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337664078] [2020-09-24 20:11:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:11:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:40,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:41,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:45,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:45,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-09-24 20:11:45,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:11:45,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-24 20:11:45,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:11:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-09-24 20:11:45,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 20:11:45,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,102 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 20:11:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:11:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 20:11:46,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 20:11:46,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 20:11:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:46,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:11:46,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 20:11:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:46,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:11:46,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 20:11:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:46,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:11:46,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 20:11:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:11:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:11:46,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 20:11:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:11:46,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:11:46,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 20:11:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:11:46,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:11:46,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 20:11:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 20:11:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:11:46,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:11:46,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:11:46,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 20:11:46,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 20:11:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 20:11:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:11:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:11:46,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:11:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:11:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:11:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:11:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:11:46,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:11:46,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:11:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:11:46,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:11:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:46,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:11:46,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:11:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:11:46,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 20:11:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 20:11:46,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:11:46,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:11:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:11:46,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:11:46,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:11:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 20:11:46,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:11:46,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:11:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:11:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:11:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:46,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:11:46,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:11:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:11:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 20:11:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 20:11:46,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:11:46,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 20:11:46,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:11:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:11:46,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:11:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:11:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:11:46,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 20:11:46,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:11:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:11:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:11:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:11:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:11:46,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:11:46,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:11:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:11:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 20:11:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 20:11:46,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:11:46,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:11:46,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 20:11:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:11:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:11:46,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 20:11:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:46,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:11:46,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 20:11:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 20:11:46,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:11:46,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:11:46,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:11:46,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-24 20:11:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:11:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:11:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:46,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-09-24 20:11:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:11:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:11:46,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:11:46,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:11:46,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:11:46,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:11:46,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:11:46,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:11:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 20:11:46,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:11:46,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:11:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-24 20:11:47,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337664078] [2020-09-24 20:11:47,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:11:47,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 20:11:47,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872632153] [2020-09-24 20:11:47,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 20:11:47,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:11:47,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 20:11:47,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:11:47,061 INFO L87 Difference]: Start difference. First operand 532 states and 605 transitions. Second operand 19 states. [2020-09-24 20:11:47,882 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:11:49,131 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 20:11:49,733 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:50,080 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:50,473 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:50,852 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:51,170 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 20:11:51,526 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:51,858 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:52,185 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 20:11:52,520 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:52,904 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:53,241 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 20:11:53,664 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:54,035 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:54,363 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 20:11:54,713 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:55,023 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:55,325 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 20:11:55,786 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:11:56,224 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 20:11:56,581 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 20:12:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:12:00,400 INFO L93 Difference]: Finished difference Result 1373 states and 1828 transitions. [2020-09-24 20:12:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-24 20:12:00,401 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 273 [2020-09-24 20:12:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:12:00,410 INFO L225 Difference]: With dead ends: 1373 [2020-09-24 20:12:00,411 INFO L226 Difference]: Without dead ends: 956 [2020-09-24 20:12:00,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=923, Invalid=3907, Unknown=0, NotChecked=0, Total=4830 [2020-09-24 20:12:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-09-24 20:12:00,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 542. [2020-09-24 20:12:00,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2020-09-24 20:12:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 609 transitions. [2020-09-24 20:12:00,532 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 609 transitions. Word has length 273 [2020-09-24 20:12:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:12:00,533 INFO L479 AbstractCegarLoop]: Abstraction has 542 states and 609 transitions. [2020-09-24 20:12:00,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 20:12:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 609 transitions. [2020-09-24 20:12:00,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-24 20:12:00,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:12:00,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:12:00,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:12:00,539 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:12:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:12:00,540 INFO L82 PathProgramCache]: Analyzing trace with hash -409396381, now seen corresponding path program 1 times [2020-09-24 20:12:00,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:12:00,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597941942] [2020-09-24 20:12:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:12:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:12:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:00,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:12:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking...