/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:54:35,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:54:35,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:54:35,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:54:35,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:54:35,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:54:35,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:54:35,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:54:35,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:54:35,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:54:35,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:54:35,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:54:35,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:54:35,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:54:35,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:54:35,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:54:35,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:54:35,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:54:35,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:54:35,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:54:35,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:54:35,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:54:35,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:54:35,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:54:35,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:54:35,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:54:35,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:54:35,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:54:35,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:54:35,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:54:35,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:54:35,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:54:35,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:54:35,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:54:35,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:54:35,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:54:35,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:54:35,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:54:35,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:54:35,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:54:35,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:54:35,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:54:35,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:54:35,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:54:35,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:54:35,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:54:35,794 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:54:35,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:54:35,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:54:35,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:54:35,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:54:35,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:54:35,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:54:35,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:54:35,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:54:35,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:54:35,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:54:35,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:54:35,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:54:35,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:54:35,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:54:35,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:54:35,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:54:35,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:54:35,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:54:35,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:54:35,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:54:35,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:54:35,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:54:35,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:54:35,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:54:35,799 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 01:54:36,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:54:36,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:54:36,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:54:36,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:54:36,255 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:54:36,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2020-09-25 01:54:36,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e9ab39fe/79fa53a351ef4f31ad473de5c58b303a/FLAG9179cc31a [2020-09-25 01:54:36,952 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:54:36,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product56.cil.c [2020-09-25 01:54:36,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e9ab39fe/79fa53a351ef4f31ad473de5c58b303a/FLAG9179cc31a [2020-09-25 01:54:37,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e9ab39fe/79fa53a351ef4f31ad473de5c58b303a [2020-09-25 01:54:37,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:54:37,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:54:37,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:54:37,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:54:37,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:54:37,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:37,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37, skipping insertion in model container [2020-09-25 01:54:37,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:37,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:54:37,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:54:37,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:37,761 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:54:37,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:54:37,981 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:54:37,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37 WrapperNode [2020-09-25 01:54:37,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:54:37,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:54:37,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:54:37,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:54:37,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:37,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:38,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:38,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:38,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:38,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:38,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... [2020-09-25 01:54:38,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:54:38,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:54:38,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:54:38,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:54:38,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:54:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:54:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:54:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:54:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:54:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:54:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:54:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:54:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:54:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:54:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:54:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:54:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:54:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:54:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 01:54:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:54:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:54:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:54:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:54:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:54:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:54:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:54:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:54:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:54:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:54:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:54:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:54:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:54:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:54:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:54:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:54:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:54:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:54:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:54:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 01:54:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:54:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:54:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:54:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:54:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:54:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:54:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:54:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:54:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:54:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:54:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:54:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 01:54:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:54:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:54:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:54:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:54:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:54:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:54:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:54:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:54:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:54:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:54:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:54:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:54:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 01:54:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-25 01:54:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:54:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:54:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:54:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:54:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:54:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:54:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:54:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:54:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:54:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:54:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:54:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:54:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:54:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:54:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:54:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:54:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:54:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:54:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:54:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:54:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:54:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:54:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:54:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:54:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:54:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:54:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:54:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:54:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:54:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:54:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:54:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:54:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:54:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:54:38,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:54:39,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:54:39,690 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:54:39,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:39 BoogieIcfgContainer [2020-09-25 01:54:39,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:54:39,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:54:39,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:54:39,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:54:39,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:54:37" (1/3) ... [2020-09-25 01:54:39,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4547fd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:39, skipping insertion in model container [2020-09-25 01:54:39,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:54:37" (2/3) ... [2020-09-25 01:54:39,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4547fd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:54:39, skipping insertion in model container [2020-09-25 01:54:39,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:54:39" (3/3) ... [2020-09-25 01:54:39,712 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product56.cil.c [2020-09-25 01:54:39,725 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:54:39,737 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:54:39,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:54:39,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:54:39,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:54:39,789 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:54:39,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:54:39,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:54:39,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:54:39,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:54:39,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:54:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2020-09-25 01:54:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:54:39,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:39,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:39,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:39,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:39,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1566233941, now seen corresponding path program 1 times [2020-09-25 01:54:39,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:39,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023330930] [2020-09-25 01:54:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:40,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:42,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:45,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:45,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:54:45,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:45,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 01:54:45,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:54:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 01:54:45,724 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:45,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:45,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:45,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:45,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:45,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 01:54:45,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:45,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:45,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:45,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:45,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:45,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:45,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:45,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:45,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:45,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:45,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:45,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:45,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:45,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:45,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:45,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:45,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:45,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:46,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:46,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:46,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:46,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:46,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:54:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:46,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:46,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:54:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:46,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:46,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:46,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:46,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:46,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:46,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:46,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:46,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:46,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023330930] [2020-09-25 01:54:46,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:46,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:54:46,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856434735] [2020-09-25 01:54:46,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:54:46,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:54:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:46,130 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 3 states. [2020-09-25 01:54:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:48,192 INFO L93 Difference]: Finished difference Result 564 states and 670 transitions. [2020-09-25 01:54:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:54:48,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:54:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:48,234 INFO L225 Difference]: With dead ends: 564 [2020-09-25 01:54:48,234 INFO L226 Difference]: Without dead ends: 342 [2020-09-25 01:54:48,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:54:48,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-25 01:54:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 296. [2020-09-25 01:54:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-09-25 01:54:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 324 transitions. [2020-09-25 01:54:48,454 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 324 transitions. Word has length 142 [2020-09-25 01:54:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:48,459 INFO L479 AbstractCegarLoop]: Abstraction has 296 states and 324 transitions. [2020-09-25 01:54:48,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:54:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 324 transitions. [2020-09-25 01:54:48,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:54:48,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:48,472 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] [2020-09-25 01:54:48,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:54:48,473 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:48,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:48,474 INFO L82 PathProgramCache]: Analyzing trace with hash -524191348, now seen corresponding path program 1 times [2020-09-25 01:54:48,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:48,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976722742] [2020-09-25 01:54:48,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:48,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:48,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:50,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:51,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:53,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:53,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:54:53,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 01:54:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:54:53,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:54:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:53,901 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:53,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:54,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:54,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:54,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:54,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 01:54:54,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:54,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:54,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:54,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:54,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:54,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:54,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:54,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:54,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:54,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:54,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:54,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:54,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:54,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:54,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:54,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:54,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:54:54,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:54,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:54,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:54,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:54,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:54,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:54,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:54:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:54,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:54,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:54,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:54,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:54,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:54,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:54,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:54,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:54,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:54,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:54,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:54,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976722742] [2020-09-25 01:54:54,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:54,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:54:54,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994873421] [2020-09-25 01:54:54,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:54:54,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:54,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:54:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:54:54,245 INFO L87 Difference]: Start difference. First operand 296 states and 324 transitions. Second operand 4 states. [2020-09-25 01:54:55,081 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:56,431 INFO L93 Difference]: Finished difference Result 471 states and 533 transitions. [2020-09-25 01:54:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:54:56,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:54:56,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:56,436 INFO L225 Difference]: With dead ends: 471 [2020-09-25 01:54:56,436 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 01:54:56,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:56,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 01:54:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 286. [2020-09-25 01:54:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 01:54:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 311 transitions. [2020-09-25 01:54:56,512 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 311 transitions. Word has length 143 [2020-09-25 01:54:56,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:56,515 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 311 transitions. [2020-09-25 01:54:56,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:54:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 311 transitions. [2020-09-25 01:54:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:54:56,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:56,517 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] [2020-09-25 01:54:56,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:54:56,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:56,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:56,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2075975327, now seen corresponding path program 1 times [2020-09-25 01:54:56,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:56,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457150401] [2020-09-25 01:54:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:56,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:59,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:55:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:55:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 01:55:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:55:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:55:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:55:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:01,885 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:55:01,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:55:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:55:02,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 01:55:02,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:02,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:55:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:02,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:02,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:55:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:02,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:02,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:55:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:02,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:55:02,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:02,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:02,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:55:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:02,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:55:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:02,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:55:02,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:55:02,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:55:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:02,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:55:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:55:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:02,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:02,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:55:02,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:02,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:55:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:02,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:02,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:02,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:02,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:02,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:02,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:55:02,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:02,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:55:02,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457150401] [2020-09-25 01:55:02,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:55:02,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:55:02,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548033699] [2020-09-25 01:55:02,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:55:02,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:55:02,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:55:02,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:55:02,151 INFO L87 Difference]: Start difference. First operand 286 states and 311 transitions. Second operand 5 states. [2020-09-25 01:55:02,676 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:55:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:55:05,049 INFO L93 Difference]: Finished difference Result 712 states and 826 transitions. [2020-09-25 01:55:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:55:05,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:55:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:55:05,055 INFO L225 Difference]: With dead ends: 712 [2020-09-25 01:55:05,055 INFO L226 Difference]: Without dead ends: 536 [2020-09-25 01:55:05,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:55:05,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-09-25 01:55:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 452. [2020-09-25 01:55:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-09-25 01:55:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 503 transitions. [2020-09-25 01:55:05,150 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 503 transitions. Word has length 156 [2020-09-25 01:55:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:55:05,151 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 503 transitions. [2020-09-25 01:55:05,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:55:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 503 transitions. [2020-09-25 01:55:05,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:55:05,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:55:05,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:55:05,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:55:05,155 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:55:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:55:05,155 INFO L82 PathProgramCache]: Analyzing trace with hash 629376790, now seen corresponding path program 1 times [2020-09-25 01:55:05,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:55:05,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886821567] [2020-09-25 01:55:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:55:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:05,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:06,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 01:55:10,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:55:10,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 01:55:10,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:55:10,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 01:55:10,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:55:10,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:10,666 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:55:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:55:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:55:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 01:55:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:55:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:10,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:10,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:10,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:10,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:55:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:10,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:55:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:55:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:10,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:55:10,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:10,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:10,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:55:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:55:10,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:55:10,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:10,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:55:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 01:55:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:55:10,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:55:10,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:55:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:55:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:10,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:55:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:10,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:55:10,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:55:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:55:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:55:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:10,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:10,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:55:10,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:55:10,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:55:10,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:55:10,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:55:10,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:55:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:55:10,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:55:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:55:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:55:11,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886821567] [2020-09-25 01:55:11,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:55:11,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:55:11,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783143583] [2020-09-25 01:55:11,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:55:11,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:55:11,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:55:11,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:55:11,077 INFO L87 Difference]: Start difference. First operand 452 states and 503 transitions. Second operand 9 states. [2020-09-25 01:55:11,609 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:55:13,100 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-09-25 01:55:13,760 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-09-25 01:55:14,100 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:55:14,453 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-25 01:55:14,785 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:55:15,561 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:55:15,943 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-09-25 01:55:16,283 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 01:55:16,709 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-25 01:55:18,122 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 188 [2020-09-25 01:55:18,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:55:18,741 INFO L93 Difference]: Finished difference Result 1079 states and 1295 transitions. [2020-09-25 01:55:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 01:55:18,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-25 01:55:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:55:18,748 INFO L225 Difference]: With dead ends: 1079 [2020-09-25 01:55:18,749 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 01:55:18,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 01:55:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 01:55:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 638. [2020-09-25 01:55:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-09-25 01:55:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 719 transitions. [2020-09-25 01:55:18,841 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 719 transitions. Word has length 161 [2020-09-25 01:55:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:55:18,842 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 719 transitions. [2020-09-25 01:55:18,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:55:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 719 transitions. [2020-09-25 01:55:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 01:55:18,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:55:18,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:55:18,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:55:18,846 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:55:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:55:18,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1326013704, now seen corresponding path program 1 times [2020-09-25 01:55:18,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:55:18,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634200543] [2020-09-25 01:55:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:55:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:55:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:55:19,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking...