/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 --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 interpolation-heuristic=FIRST --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_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:09:56,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:09:56,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:09:56,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:09:56,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:09:56,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:09:56,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:09:56,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:09:56,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:09:56,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:09:56,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:09:56,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:09:56,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:09:56,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:09:56,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:09:56,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:09:56,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:09:56,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:09:56,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:09:56,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:09:56,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:09:56,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:09:56,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:09:56,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:09:56,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:09:56,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:09:56,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:09:56,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:09:56,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:09:56,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:09:56,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:09:56,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:09:56,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:09:56,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:09:56,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:09:56,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:09:56,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:09:56,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:09:56,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:09:56,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:09:56,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:09:56,913 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 [2020-09-21 11:09:56,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:09:56,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:09:56,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:09:56,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:09:56,964 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:09:56,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:09:56,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:09:56,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:09:56,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:09:56,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:09:56,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:09:56,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:09:56,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:09:56,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:09:56,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:09:56,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:09:56,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:09:56,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:09:56,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:09:56,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:09:56,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:09:56,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:09:56,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:09:56,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:09:56,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:09:56,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:09:56,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:09:56,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:09:56,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:09:56,971 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:09:57,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:09:57,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:09:57,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:09:57,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:09:57,491 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:09:57,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-09-21 11:09:57,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/673b0fd27/bf274a3863df44a4bb40bdaf0b077021/FLAGd287a38c6 [2020-09-21 11:09:58,198 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:09:58,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-09-21 11:09:58,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/673b0fd27/bf274a3863df44a4bb40bdaf0b077021/FLAGd287a38c6 [2020-09-21 11:09:58,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/673b0fd27/bf274a3863df44a4bb40bdaf0b077021 [2020-09-21 11:09:58,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:09:58,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:09:58,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:09:58,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:09:58,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:09:58,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:58, skipping insertion in model container [2020-09-21 11:09:58,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:09:58" (1/1) ... [2020-09-21 11:09:58,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:09:58,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:09:59,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:09:59,076 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:09:59,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:09:59,198 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:09:59,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59 WrapperNode [2020-09-21 11:09:59,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:09:59,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:09:59,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:09:59,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:09:59,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (1/1) ... [2020-09-21 11:09:59,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (1/1) ... [2020-09-21 11:09:59,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (1/1) ... [2020-09-21 11:09:59,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (1/1) ... [2020-09-21 11:09:59,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (1/1) ... [2020-09-21 11:09:59,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (1/1) ... [2020-09-21 11:09:59,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (1/1) ... [2020-09-21 11:09:59,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:09:59,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:09:59,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:09:59,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:09:59,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (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 [2020-09-21 11:09:59,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:09:59,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:09:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:09:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:09:59,440 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:09:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:09:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:09:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:09:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:09:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:09:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:09:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:09:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:09:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:09:59,443 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:09:59,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:09:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:09:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:09:59,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:09:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:09:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:09:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:09:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 11:09:59,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:09:59,447 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:09:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:09:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:09:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:09:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:09:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:09:59,448 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 11:09:59,449 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:09:59,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:09:59,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:09:59,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:09:59,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:09:59,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:09:59,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:09:59,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:09:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:09:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:09:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:09:59,450 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:09:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:09:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:09:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:09:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:09:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:09:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:09:59,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:09:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:09:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:09:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:09:59,452 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:09:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:09:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:09:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:09:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:09:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:09:59,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:09:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:09:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:09:59,454 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:09:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:09:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:09:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:09:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 11:09:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 11:09:59,455 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:09:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:09:59,456 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:09:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-21 11:09:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:09:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:09:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:09:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:09:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:09:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:09:59,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:09:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:09:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:09:59,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:09:59,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:09:59,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:09:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:09:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:09:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:09:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:09:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:09:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:09:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:09:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:10:00,577 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:10:00,578 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:10:00,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:00 BoogieIcfgContainer [2020-09-21 11:10:00,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:10:00,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:10:00,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:10:00,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:10:00,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:09:58" (1/3) ... [2020-09-21 11:10:00,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a1c536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:00, skipping insertion in model container [2020-09-21 11:10:00,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:09:59" (2/3) ... [2020-09-21 11:10:00,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a1c536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:10:00, skipping insertion in model container [2020-09-21 11:10:00,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:10:00" (3/3) ... [2020-09-21 11:10:00,594 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2020-09-21 11:10:00,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:10:00,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:10:00,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:10:00,671 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:10:00,671 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:10:00,671 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:10:00,671 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:10:00,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:10:00,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:10:00,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:10:00,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:10:00,700 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-09-21 11:10:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:10:00,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:00,714 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] [2020-09-21 11:10:00,715 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:00,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:00,721 INFO L82 PathProgramCache]: Analyzing trace with hash 578570237, now seen corresponding path program 1 times [2020-09-21 11:10:00,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:00,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763697572] [2020-09-21 11:10:00,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,130 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,131 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,132 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,135 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 11:10:01,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:10:01,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:10:01,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:10:01,540 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,557 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,557 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,558 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,558 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,623 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,623 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,623 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:01,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,635 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,635 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,636 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,636 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,643 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,643 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,651 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,651 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,652 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,652 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:10:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,659 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,659 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:01,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,667 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,668 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,668 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,668 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:01,675 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:01,676 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:01,676 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:01,676 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:01,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:01,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:01,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:01,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:01,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:01,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:01,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763697572] [2020-09-21 11:10:01,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:01,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:10:01,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570635806] [2020-09-21 11:10:01,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:10:01,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:01,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:10:01,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:01,728 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-09-21 11:10:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:02,988 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-09-21 11:10:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:10:02,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 11:10:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:03,014 INFO L225 Difference]: With dead ends: 300 [2020-09-21 11:10:03,014 INFO L226 Difference]: Without dead ends: 162 [2020-09-21 11:10:03,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:10:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-21 11:10:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-09-21 11:10:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-21 11:10:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-09-21 11:10:03,140 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-09-21 11:10:03,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:03,140 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-09-21 11:10:03,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:10:03,141 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-09-21 11:10:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:10:03,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:03,145 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] [2020-09-21 11:10:03,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:10:03,146 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:03,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:03,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1188326363, now seen corresponding path program 1 times [2020-09-21 11:10:03,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:03,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026277808] [2020-09-21 11:10:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,213 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,214 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,214 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,214 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-21 11:10:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:10:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:10:03,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:10:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,561 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,573 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,573 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,573 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,613 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,614 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,619 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,619 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,619 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,624 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,625 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,625 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,625 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,631 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,631 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:03,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:10:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,636 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,636 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,636 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,637 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,641 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,642 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:03,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 11:10:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:03,648 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:03,648 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:03,648 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:03,648 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:03,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:03,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:03,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:03,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026277808] [2020-09-21 11:10:03,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:03,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:03,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412491514] [2020-09-21 11:10:03,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:03,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:03,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:03,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:03,662 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-09-21 11:10:04,102 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:10:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:04,999 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-09-21 11:10:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:05,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 11:10:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:05,004 INFO L225 Difference]: With dead ends: 229 [2020-09-21 11:10:05,004 INFO L226 Difference]: Without dead ends: 146 [2020-09-21 11:10:05,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-21 11:10:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-09-21 11:10:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 11:10:05,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-09-21 11:10:05,043 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-09-21 11:10:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:05,043 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-09-21 11:10:05,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-09-21 11:10:05,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:10:05,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:05,046 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] [2020-09-21 11:10:05,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:10:05,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:05,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1564710697, now seen corresponding path program 1 times [2020-09-21 11:10:05,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:05,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648523378] [2020-09-21 11:10:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:05,613 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:10:05,613 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:05,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:05,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:05,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-21 11:10:05,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-21 11:10:05,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:10:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:10:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:05,950 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,029 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,030 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,030 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,031 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:06,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 11:10:06,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:06,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:06,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,075 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,076 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,076 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:06,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:06,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,081 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,082 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,082 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:06,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,088 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,088 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,088 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,089 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:06,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,095 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,096 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,096 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,096 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:06,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:06,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:06,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:10:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,101 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,101 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,101 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,107 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:06,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:06,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:06,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:06,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 11:10:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:06,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:06,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:06,113 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:06,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:06,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648523378] [2020-09-21 11:10:06,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:06,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:10:06,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037174756] [2020-09-21 11:10:06,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:10:06,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:06,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:10:06,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:10:06,127 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-09-21 11:10:06,463 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:07,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:07,413 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-09-21 11:10:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:10:07,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-21 11:10:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:07,417 INFO L225 Difference]: With dead ends: 242 [2020-09-21 11:10:07,417 INFO L226 Difference]: Without dead ends: 146 [2020-09-21 11:10:07,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:10:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-21 11:10:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-09-21 11:10:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 11:10:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-09-21 11:10:07,453 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-09-21 11:10:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:07,454 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-09-21 11:10:07,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:10:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-09-21 11:10:07,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-21 11:10:07,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:07,457 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] [2020-09-21 11:10:07,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:10:07,458 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:07,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:07,458 INFO L82 PathProgramCache]: Analyzing trace with hash -203175812, now seen corresponding path program 1 times [2020-09-21 11:10:07,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:07,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431004950] [2020-09-21 11:10:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,009 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-21 11:10:08,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-21 11:10:08,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 11:10:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:08,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-21 11:10:08,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:08,381 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:08,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,483 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,483 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:08,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 11:10:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:08,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,534 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,534 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,534 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:08,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:08,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,545 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,545 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,546 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,546 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:08,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:08,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,553 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,554 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:08,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:08,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,564 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,564 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,564 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,565 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:08,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:08,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:08,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:10:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,591 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,591 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,591 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,592 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:10:08,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:10:08,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 11:10:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,602 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,603 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,603 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,604 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:10:08,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:08,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,610 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:08,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:10:08,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 11:10:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,621 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,622 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,622 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,623 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:08,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:10:08,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:08,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 11:10:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,634 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,634 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,634 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,635 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:08,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:10:08,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:10:08,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:08,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:08,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-21 11:10:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:08,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:08,659 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:08,660 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:08,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:08,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:08,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:08,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:08,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431004950] [2020-09-21 11:10:08,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:08,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:10:08,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342944411] [2020-09-21 11:10:08,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:10:08,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:08,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:10:08,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:10:08,691 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-09-21 11:10:09,267 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:11,178 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:11,551 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:11,868 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:10:12,329 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:12,820 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-09-21 11:10:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:10:12,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-09-21 11:10:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:12,825 INFO L225 Difference]: With dead ends: 363 [2020-09-21 11:10:12,826 INFO L226 Difference]: Without dead ends: 267 [2020-09-21 11:10:12,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:10:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-21 11:10:12,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-09-21 11:10:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-21 11:10:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-09-21 11:10:12,929 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-09-21 11:10:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:12,930 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-09-21 11:10:12,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:10:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-09-21 11:10:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-21 11:10:12,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:12,934 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] [2020-09-21 11:10:12,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:10:12,934 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:12,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1642463076, now seen corresponding path program 1 times [2020-09-21 11:10:12,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:12,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334710060] [2020-09-21 11:10:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,260 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-21 11:10:13,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-21 11:10:13,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:10:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 11:10:13,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:13,559 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:10:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:10:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,631 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,631 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 11:10:13,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:10:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:10:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,667 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,667 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,667 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:13,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:10:13,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:10:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,673 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:13,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:13,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:13,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:10:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,679 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,680 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,680 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,680 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:10:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,686 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,686 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,687 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,687 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:13,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:10:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:10:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,701 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,702 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,702 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:10:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:10:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:10:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,708 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:10:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,722 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,722 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:10:13,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:10:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,728 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,728 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,728 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 11:10:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:10:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,733 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,733 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,733 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,734 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:10:13,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:10:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 11:10:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,739 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,739 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,739 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,739 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 11:10:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,745 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 11:10:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:10:13,750 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:10:13,750 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:10:13,751 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:10:13,751 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:10:13,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:10:13,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:10:13,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:10:13,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:10:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:10:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:10:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:10:13,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:10:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:10:13,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334710060] [2020-09-21 11:10:13,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:10:13,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:10:13,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583713052] [2020-09-21 11:10:13,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:10:13,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:10:13,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:10:13,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:10:13,768 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 6 states. [2020-09-21 11:10:14,099 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:10:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:10:14,799 INFO L93 Difference]: Finished difference Result 348 states and 431 transitions. [2020-09-21 11:10:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:10:14,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-09-21 11:10:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:10:14,803 INFO L225 Difference]: With dead ends: 348 [2020-09-21 11:10:14,803 INFO L226 Difference]: Without dead ends: 156 [2020-09-21 11:10:14,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:10:14,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-09-21 11:10:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-09-21 11:10:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-21 11:10:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2020-09-21 11:10:14,836 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 79 [2020-09-21 11:10:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:10:14,836 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2020-09-21 11:10:14,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:10:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2020-09-21 11:10:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-21 11:10:14,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:10:14,838 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] [2020-09-21 11:10:14,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:10:14,838 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:10:14,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:10:14,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1511330786, now seen corresponding path program 1 times [2020-09-21 11:10:14,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:10:14,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590738995] [2020-09-21 11:10:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:10:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:10:14,901 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:10:14,902 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:10:14,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:10:14,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:10:14 BoogieIcfgContainer [2020-09-21 11:10:14,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:10:14,935 INFO L168 Benchmark]: Toolchain (without parser) took 16464.02 ms. Allocated memory was 140.0 MB in the beginning and 510.1 MB in the end (delta: 370.1 MB). Free memory was 102.0 MB in the beginning and 390.0 MB in the end (delta: -288.0 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:14,936 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:10:14,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.93 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 173.4 MB in the end (delta: -72.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:14,937 INFO L168 Benchmark]: Boogie Preprocessor took 130.74 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:14,938 INFO L168 Benchmark]: RCFGBuilder took 1253.85 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.2 MB in the beginning and 201.1 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:14,939 INFO L168 Benchmark]: TraceAbstraction took 14347.27 ms. Allocated memory was 237.5 MB in the beginning and 510.1 MB in the end (delta: 272.6 MB). Free memory was 199.6 MB in the beginning and 390.0 MB in the end (delta: -190.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:10:14,943 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.93 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 173.4 MB in the end (delta: -72.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.74 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 169.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1253.85 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.2 MB in the beginning and 201.1 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14347.27 ms. Allocated memory was 237.5 MB in the beginning and 510.1 MB in the end (delta: 272.6 MB). Free memory was 199.6 MB in the beginning and 390.0 MB in the end (delta: -190.5 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L145] int cleanupTimeShifts = 4; [L286] int pumpRunning = 0; [L287] int systemActive = 1; [L709] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L229] FCALL select_helpers() [L230] FCALL select_features() [L231] CALL, EXPR valid_product() [L273] int retValue_acc ; [L276] retValue_acc = 1 [L277] return (retValue_acc); [L231] RET, EXPR valid_product() [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L235] FCALL setup() [L236] CALL runTest() [L215] CALL test() [L474] int splverifierCounter ; [L475] int tmp ; [L476] int tmp___0 ; [L477] int tmp___1 ; [L478] int tmp___2 ; [L481] splverifierCounter = 0 [L483] COND TRUE 1 [L485] COND TRUE splverifierCounter < 4 [L491] tmp = __VERIFIER_nondet_int() [L493] COND TRUE \read(tmp) [L495] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L495] RET waterRise() [L501] tmp___0 = __VERIFIER_nondet_int() [L503] COND FALSE !(\read(tmp___0)) [L511] tmp___2 = __VERIFIER_nondet_int() [L513] COND FALSE !(\read(tmp___2)) [L519] tmp___1 = __VERIFIER_nondet_int() [L521] COND TRUE \read(tmp___1) [L528] CALL timeShift() [L294] COND FALSE !(\read(pumpRunning)) [L301] COND TRUE \read(systemActive) [L303] CALL processEnvironment() [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L367] CALL processEnvironment__wrappee__lowWaterSensor() [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L341] FCALL processEnvironment__wrappee__base() [L367] RET processEnvironment__wrappee__lowWaterSensor() [L303] RET processEnvironment() [L309] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 528 SDtfs, 695 SDslu, 226 SDs, 0 SdLazy, 1203 SolverSat, 441 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 149 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 388 NumberOfCodeBlocks, 388 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 308 ConstructedInterpolants, 0 QuantifiedInterpolants, 88804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...