/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 12:41:24,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 12:41:24,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 12:41:24,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 12:41:24,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 12:41:24,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 12:41:24,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 12:41:24,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 12:41:24,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 12:41:24,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 12:41:24,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 12:41:24,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 12:41:24,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 12:41:24,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 12:41:24,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 12:41:24,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 12:41:24,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 12:41:24,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 12:41:24,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 12:41:24,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 12:41:24,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 12:41:24,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 12:41:24,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 12:41:24,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 12:41:24,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 12:41:24,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 12:41:24,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 12:41:24,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 12:41:24,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 12:41:24,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 12:41:24,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 12:41:24,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 12:41:24,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 12:41:24,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 12:41:24,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 12:41:24,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 12:41:24,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 12:41:24,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 12:41:24,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 12:41:24,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 12:41:24,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 12:41:24,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 12:41:24,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 12:41:24,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 12:41:24,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 12:41:24,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 12:41:24,709 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 12:41:24,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 12:41:24,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 12:41:24,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 12:41:24,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 12:41:24,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 12:41:24,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 12:41:24,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 12:41:24,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 12:41:24,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 12:41:24,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 12:41:24,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 12:41:24,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 12:41:24,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 12:41:24,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 12:41:24,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 12:41:24,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 12:41:24,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 12:41:24,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 12:41:24,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 12:41:24,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 12:41:24,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 12:41:24,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 12:41:24,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 12:41:24,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 12:41:24,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 12:41:25,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 12:41:25,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 12:41:25,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 12:41:25,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 12:41:25,022 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 12:41:25,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-10-13 12:41:25,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98f8ca612/ccaecb6cd8fa4e57abf122e70c991590/FLAGd6de54d1f [2020-10-13 12:41:25,596 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 12:41:25,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-10-13 12:41:25,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98f8ca612/ccaecb6cd8fa4e57abf122e70c991590/FLAGd6de54d1f [2020-10-13 12:41:25,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98f8ca612/ccaecb6cd8fa4e57abf122e70c991590 [2020-10-13 12:41:25,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 12:41:25,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 12:41:25,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 12:41:25,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 12:41:25,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 12:41:25,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:25" (1/1) ... [2020-10-13 12:41:25,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4288bc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:25, skipping insertion in model container [2020-10-13 12:41:25,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:41:25" (1/1) ... [2020-10-13 12:41:25,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 12:41:25,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 12:41:26,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:41:26,312 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 12:41:26,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:41:26,539 INFO L208 MainTranslator]: Completed translation [2020-10-13 12:41:26,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26 WrapperNode [2020-10-13 12:41:26,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 12:41:26,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 12:41:26,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 12:41:26,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 12:41:26,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... [2020-10-13 12:41:26,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... [2020-10-13 12:41:26,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... [2020-10-13 12:41:26,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... [2020-10-13 12:41:26,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... [2020-10-13 12:41:26,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... [2020-10-13 12:41:26,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... [2020-10-13 12:41:26,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 12:41:26,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 12:41:26,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 12:41:26,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 12:41:26,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 12:41:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 12:41:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 12:41:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-13 12:41:26,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-13 12:41:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-13 12:41:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-13 12:41:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-13 12:41:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-13 12:41:26,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 12:41:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-13 12:41:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-13 12:41:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-13 12:41:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-13 12:41:26,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-13 12:41:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-13 12:41:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-13 12:41:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-13 12:41:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-13 12:41:26,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-13 12:41:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-13 12:41:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-13 12:41:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-10-13 12:41:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-13 12:41:26,705 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-13 12:41:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-13 12:41:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-13 12:41:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-13 12:41:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-13 12:41:26,706 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-13 12:41:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-13 12:41:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-13 12:41:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-13 12:41:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-13 12:41:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-13 12:41:26,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-13 12:41:26,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-13 12:41:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 12:41:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 12:41:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-13 12:41:26,708 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-13 12:41:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-13 12:41:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-13 12:41:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-13 12:41:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-13 12:41:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-13 12:41:26,709 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-13 12:41:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-13 12:41:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-13 12:41:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-13 12:41:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-13 12:41:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-13 12:41:26,710 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-13 12:41:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-13 12:41:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-13 12:41:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-13 12:41:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-13 12:41:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 12:41:26,711 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-13 12:41:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-13 12:41:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 12:41:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 12:41:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-13 12:41:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 12:41:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 12:41:26,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 12:41:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 12:41:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-13 12:41:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 12:41:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-13 12:41:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-13 12:41:26,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 12:41:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-13 12:41:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-13 12:41:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 12:41:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-13 12:41:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-13 12:41:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-13 12:41:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-13 12:41:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-13 12:41:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-13 12:41:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-13 12:41:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-10-13 12:41:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-13 12:41:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 12:41:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 12:41:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 12:41:27,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 12:41:27,796 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-13 12:41:27,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:41:27 BoogieIcfgContainer [2020-10-13 12:41:27,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 12:41:27,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 12:41:27,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 12:41:27,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 12:41:27,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:41:25" (1/3) ... [2020-10-13 12:41:27,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ba9214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:41:27, skipping insertion in model container [2020-10-13 12:41:27,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:41:26" (2/3) ... [2020-10-13 12:41:27,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ba9214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:41:27, skipping insertion in model container [2020-10-13 12:41:27,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:41:27" (3/3) ... [2020-10-13 12:41:27,809 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product11.cil.c [2020-10-13 12:41:27,820 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 12:41:27,828 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 12:41:27,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 12:41:27,867 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 12:41:27,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 12:41:27,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 12:41:27,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 12:41:27,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 12:41:27,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 12:41:27,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 12:41:27,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 12:41:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-10-13 12:41:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 12:41:27,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:41:27,906 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] [2020-10-13 12:41:27,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:41:27,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:41:27,912 INFO L82 PathProgramCache]: Analyzing trace with hash 789577792, now seen corresponding path program 1 times [2020-10-13 12:41:27,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:41:27,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479863641] [2020-10-13 12:41:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:41:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 12:41:30,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 12:41:30,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2018 [2020-10-13 12:41:30,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 12:41:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 12:41:30,665 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:41:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:41:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:30,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 12:41:30,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 12:41:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:41:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:30,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:41:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:30,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:30,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:41:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:41:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:30,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:41:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:30,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:30,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:30,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 12:41:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:30,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:30,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 12:41:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:30,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:30,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 12:41:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:30,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:30,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:30,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:30,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:41:30,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:30,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:41:30,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479863641] [2020-10-13 12:41:30,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:41:30,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 12:41:30,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148415122] [2020-10-13 12:41:30,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 12:41:30,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:41:30,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 12:41:30,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 12:41:30,865 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 3 states. [2020-10-13 12:41:31,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:41:31,974 INFO L93 Difference]: Finished difference Result 231 states and 307 transitions. [2020-10-13 12:41:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 12:41:31,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-10-13 12:41:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:41:31,996 INFO L225 Difference]: With dead ends: 231 [2020-10-13 12:41:31,997 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 12:41:32,001 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 [2020-10-13 12:41:32,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 12:41:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 96. [2020-10-13 12:41:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-13 12:41:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-10-13 12:41:32,124 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 52 [2020-10-13 12:41:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:41:32,129 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-10-13 12:41:32,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 12:41:32,130 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-10-13 12:41:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 12:41:32,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:41:32,136 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] [2020-10-13 12:41:32,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 12:41:32,136 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:41:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:41:32,137 INFO L82 PathProgramCache]: Analyzing trace with hash 86425602, now seen corresponding path program 1 times [2020-10-13 12:41:32,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:41:32,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809365665] [2020-10-13 12:41:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:41:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 12:41:34,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 12:41:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2322 [2020-10-13 12:41:34,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 12:41:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 12:41:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,802 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:41:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:41:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:34,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 12:41:34,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:34,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:41:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:34,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:34,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:41:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:34,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 12:41:34,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:34,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:41:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:34,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 12:41:34,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:41:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:34,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 12:41:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:34,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:41:34,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:34,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 12:41:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:34,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:34,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 12:41:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:34,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:34,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:34,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:34,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:34,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:34,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:41:34,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809365665] [2020-10-13 12:41:34,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:41:34,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 12:41:34,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124115847] [2020-10-13 12:41:34,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 12:41:34,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:41:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 12:41:34,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 12:41:34,904 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 4 states. [2020-10-13 12:41:35,408 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 12:41:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:41:35,939 INFO L93 Difference]: Finished difference Result 155 states and 188 transitions. [2020-10-13 12:41:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 12:41:35,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-13 12:41:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:41:35,943 INFO L225 Difference]: With dead ends: 155 [2020-10-13 12:41:35,943 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 12:41:35,944 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 [2020-10-13 12:41:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 12:41:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2020-10-13 12:41:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 12:41:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2020-10-13 12:41:35,983 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 53 [2020-10-13 12:41:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:41:35,983 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2020-10-13 12:41:35,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 12:41:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2020-10-13 12:41:35,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 12:41:35,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:41:35,986 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] [2020-10-13 12:41:35,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 12:41:35,986 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:41:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:41:35,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1920799428, now seen corresponding path program 1 times [2020-10-13 12:41:35,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:41:35,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990450400] [2020-10-13 12:41:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:41:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:36,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:37,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 12:41:37,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 12:41:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1695 [2020-10-13 12:41:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 12:41:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:37,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 12:41:37,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:41:38,050 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:41:38,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:41:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:38,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 12:41:38,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:38,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 12:41:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:41:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:38,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:38,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:41:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:38,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:38,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:41:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:38,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:38,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:38,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:41:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:38,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:38,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 12:41:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 12:41:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:38,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:38,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:38,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:38,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 12:41:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:38,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:38,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:41:38,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990450400] [2020-10-13 12:41:38,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:41:38,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 12:41:38,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055753051] [2020-10-13 12:41:38,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 12:41:38,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:41:38,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 12:41:38,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 12:41:38,212 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand 4 states. [2020-10-13 12:41:38,506 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 12:41:39,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:41:39,425 INFO L93 Difference]: Finished difference Result 244 states and 299 transitions. [2020-10-13 12:41:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 12:41:39,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-13 12:41:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:41:39,428 INFO L225 Difference]: With dead ends: 244 [2020-10-13 12:41:39,428 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 12:41:39,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 12:41:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 12:41:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 138. [2020-10-13 12:41:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-13 12:41:39,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-10-13 12:41:39,479 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 57 [2020-10-13 12:41:39,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:41:39,479 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-10-13 12:41:39,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 12:41:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-10-13 12:41:39,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 12:41:39,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:41:39,481 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] [2020-10-13 12:41:39,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 12:41:39,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:41:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:41:39,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1032165772, now seen corresponding path program 1 times [2020-10-13 12:41:39,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:41:39,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756432849] [2020-10-13 12:41:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:41:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 12:41:40,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-13 12:41:40,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 12:41:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 12:41:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:40,597 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:41:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:41:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:40,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 12:41:40,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 12:41:40,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:41:40,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:41:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:40,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:40,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:40,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:41:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:40,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:40,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:41:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:40,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:40,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:40,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:40,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:40,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:41:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:40,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:40,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:41:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 12:41:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:40,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 12:41:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:40,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:40,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 12:41:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:40,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:40,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 12:41:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:40,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:40,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 12:41:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:40,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:40,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:40,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:40,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 12:41:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:41:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:41:40,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756432849] [2020-10-13 12:41:40,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:41:40,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 12:41:40,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948905115] [2020-10-13 12:41:40,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 12:41:40,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:41:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 12:41:40,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 12:41:40,766 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 7 states. [2020-10-13 12:41:41,138 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 12:41:41,895 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 12:41:42,565 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-10-13 12:41:42,812 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 12:41:43,057 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 12:41:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:41:43,403 INFO L93 Difference]: Finished difference Result 388 states and 482 transitions. [2020-10-13 12:41:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 12:41:43,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-13 12:41:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:41:43,408 INFO L225 Difference]: With dead ends: 388 [2020-10-13 12:41:43,408 INFO L226 Difference]: Without dead ends: 274 [2020-10-13 12:41:43,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-13 12:41:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-13 12:41:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 251. [2020-10-13 12:41:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-13 12:41:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 297 transitions. [2020-10-13 12:41:43,474 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 297 transitions. Word has length 60 [2020-10-13 12:41:43,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:41:43,475 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 297 transitions. [2020-10-13 12:41:43,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 12:41:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 297 transitions. [2020-10-13 12:41:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 12:41:43,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:41:43,478 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] [2020-10-13 12:41:43,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 12:41:43,478 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:41:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:41:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2086246822, now seen corresponding path program 1 times [2020-10-13 12:41:43,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:41:43,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884667232] [2020-10-13 12:41:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:41:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:43,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 12:41:45,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 12:41:45,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1667 [2020-10-13 12:41:45,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 12:41:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 12:41:45,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 12:41:45,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:41:45,499 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 12:41:45,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:41:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:45,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 12:41:45,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 12:41:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:45,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:45,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:45,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 12:41:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:45,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 12:41:45,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 12:41:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:45,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:41:45,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:45,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:45,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 12:41:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:45,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 12:41:45,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:41:45,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:41:45,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 12:41:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:45,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 12:41:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:41:45,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:45,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:45,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 12:41:45,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:41:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 12:41:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:45,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:45,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 12:41:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:45,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 12:41:45,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 12:41:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:45,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 12:41:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:41:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:41:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:41:45,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 12:41:45,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:41:45,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:41:45,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:41:45,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 12:41:45,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:41:45,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 12:41:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:41:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:41:45,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884667232] [2020-10-13 12:41:45,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:41:45,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 12:41:45,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518330623] [2020-10-13 12:41:45,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 12:41:45,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:41:45,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 12:41:45,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 12:41:45,636 INFO L87 Difference]: Start difference. First operand 251 states and 297 transitions. Second operand 8 states. [2020-10-13 12:41:46,308 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 12:41:47,184 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 12:41:47,444 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 12:41:47,756 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 12:41:48,034 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 12:41:48,272 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 12:41:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:41:48,513 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2020-10-13 12:41:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 12:41:48,520 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-13 12:41:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:41:48,523 INFO L225 Difference]: With dead ends: 506 [2020-10-13 12:41:48,524 INFO L226 Difference]: Without dead ends: 378 [2020-10-13 12:41:48,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-13 12:41:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-13 12:41:48,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 347. [2020-10-13 12:41:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-10-13 12:41:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 415 transitions. [2020-10-13 12:41:48,642 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 415 transitions. Word has length 64 [2020-10-13 12:41:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:41:48,643 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 415 transitions. [2020-10-13 12:41:48,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 12:41:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 415 transitions. [2020-10-13 12:41:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 12:41:48,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:41:48,646 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] [2020-10-13 12:41:48,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 12:41:48,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:41:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:41:48,647 INFO L82 PathProgramCache]: Analyzing trace with hash -68424058, now seen corresponding path program 1 times [2020-10-13 12:41:48,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:41:48,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455046310] [2020-10-13 12:41:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:41:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 12:41:48,719 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 12:41:48,719 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 12:41:48,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 12:41:48,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:41:48 BoogieIcfgContainer [2020-10-13 12:41:48,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 12:41:48,760 INFO L168 Benchmark]: Toolchain (without parser) took 22859.07 ms. Allocated memory was 142.1 MB in the beginning and 603.5 MB in the end (delta: 461.4 MB). Free memory was 102.3 MB in the beginning and 559.8 MB in the end (delta: -457.5 MB). Peak memory consumption was 423.8 MB. Max. memory is 7.1 GB. [2020-10-13 12:41:48,761 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 12:41:48,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.04 ms. Allocated memory was 142.1 MB in the beginning and 206.0 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 176.9 MB in the end (delta: -74.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-10-13 12:41:48,767 INFO L168 Benchmark]: Boogie Preprocessor took 93.57 ms. Allocated memory is still 206.0 MB. Free memory was 176.9 MB in the beginning and 172.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-13 12:41:48,768 INFO L168 Benchmark]: RCFGBuilder took 1167.48 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 172.9 MB in the beginning and 198.4 MB in the end (delta: -25.5 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-10-13 12:41:48,769 INFO L168 Benchmark]: TraceAbstraction took 20953.80 ms. Allocated memory was 234.4 MB in the beginning and 603.5 MB in the end (delta: 369.1 MB). Free memory was 198.4 MB in the beginning and 559.8 MB in the end (delta: -361.4 MB). Peak memory consumption was 427.7 MB. Max. memory is 7.1 GB. [2020-10-13 12:41:48,781 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 142.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.04 ms. Allocated memory was 142.1 MB in the beginning and 206.0 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 176.9 MB in the end (delta: -74.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.57 ms. Allocated memory is still 206.0 MB. Free memory was 176.9 MB in the beginning and 172.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1167.48 ms. Allocated memory was 206.0 MB in the beginning and 234.4 MB in the end (delta: 28.3 MB). Free memory was 172.9 MB in the beginning and 198.4 MB in the end (delta: -25.5 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20953.80 ms. Allocated memory was 234.4 MB in the beginning and 603.5 MB in the end (delta: 369.1 MB). Free memory was 198.4 MB in the beginning and 559.8 MB in the end (delta: -361.4 MB). Peak memory consumption was 427.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 799]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L78] int cleanupTimeShifts = 4; [L386] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L804] int waterLevel = 1; [L805] int methaneLevelCritical = 0; [L159] int retValue_acc ; [L160] int tmp ; [L164] FCALL select_helpers() [L165] FCALL select_features() [L166] CALL, EXPR valid_product() [L208] int retValue_acc ; [L211] retValue_acc = 1 [L212] return (retValue_acc); [L166] RET, EXPR valid_product() [L166] tmp = valid_product() [L168] COND TRUE \read(tmp) [L170] FCALL setup() [L171] CALL runTest() [L150] CALL test() [L729] int splverifierCounter ; [L730] int tmp ; [L731] int tmp___0 ; [L732] int tmp___1 ; [L733] int tmp___2 ; [L736] splverifierCounter = 0 [L738] COND TRUE 1 [L740] COND TRUE splverifierCounter < 4 [L746] tmp = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp) [L750] CALL waterRise() [L822] COND TRUE waterLevel < 2 [L823] waterLevel = waterLevel + 1 [L750] RET waterRise() [L756] tmp___0 = __VERIFIER_nondet_int() [L758] COND FALSE !(\read(tmp___0)) [L766] tmp___2 = __VERIFIER_nondet_int() [L768] COND TRUE \read(tmp___2) [L783] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] FCALL processEnvironment() [L610] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L843] int retValue_acc ; [L846] retValue_acc = methaneLevelCritical [L847] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L875] int retValue_acc ; [L878] retValue_acc = waterLevel [L879] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L668] int retValue_acc ; [L671] retValue_acc = pumpRunning [L672] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L799] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 210 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 479 SDtfs, 565 SDslu, 412 SDs, 0 SdLazy, 1377 SolverSat, 310 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=347occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 150 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 82238 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...