/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:55:57,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:55:57,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:55:57,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:55:57,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:55:57,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:55:57,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:55:57,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:55:57,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:55:57,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:55:57,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:55:57,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:55:57,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:55:57,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:55:57,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:55:57,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:55:57,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:55:57,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:55:57,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:55:57,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:55:57,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:55:57,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:55:57,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:55:57,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:55:57,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:55:57,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:55:57,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:55:57,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:55:57,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:55:57,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:55:57,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:55:57,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:55:57,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:55:57,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:55:57,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:55:57,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:55:57,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:55:57,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:55:57,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:55:57,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:55:57,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:55:57,769 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 [2020-08-18 20:55:57,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:55:57,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:55:57,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:55:57,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:55:57,794 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:55:57,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:55:57,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:55:57,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:55:57,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:55:57,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:55:57,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:55:57,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:55:57,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:55:57,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:55:57,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:55:57,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:55:57,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:55:57,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:55:57,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:55:57,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:55:57,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:55:57,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:55:57,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:55:57,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:55:57,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:55:57,797 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:55:57,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:55:57,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:55:57,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:55:57,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:55:58,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:55:58,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:55:58,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:55:58,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:55:58,101 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:55:58,102 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-08-18 20:55:58,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/465b2833c/72c1545ae4894081805918524eba4e8f/FLAG5dd65626c [2020-08-18 20:55:58,692 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:55:58,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-08-18 20:55:58,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/465b2833c/72c1545ae4894081805918524eba4e8f/FLAG5dd65626c [2020-08-18 20:55:58,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/465b2833c/72c1545ae4894081805918524eba4e8f [2020-08-18 20:55:58,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:55:58,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:55:58,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:58,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:55:58,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:55:58,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:58" (1/1) ... [2020-08-18 20:55:58,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9a5625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:58, skipping insertion in model container [2020-08-18 20:55:58,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:58" (1/1) ... [2020-08-18 20:55:58,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:55:59,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:55:59,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:59,498 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:55:59,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:59,644 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:55:59,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59 WrapperNode [2020-08-18 20:55:59,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:59,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:55:59,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:55:59,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:55:59,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... [2020-08-18 20:55:59,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... [2020-08-18 20:55:59,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... [2020-08-18 20:55:59,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... [2020-08-18 20:55:59,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... [2020-08-18 20:55:59,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... [2020-08-18 20:55:59,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... [2020-08-18 20:55:59,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:55:59,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:55:59,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:55:59,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:55:59,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:55:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:55:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:55:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:55:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:55:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:55:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:55:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:55:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:55:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:55:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:55:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:55:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:55:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:55:59,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:55:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:55:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:55:59,838 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:55:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:55:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:55:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:55:59,839 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:55:59,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:55:59,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:55:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:55:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:55:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:55:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:55:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:55:59,842 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:55:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:55:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:55:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:55:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:55:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:55:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:55:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:55:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:55:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:55:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:55:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:55:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:55:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:55:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:55:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:55:59,847 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:55:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:55:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:55:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:55:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:55:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:55:59,848 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:55:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:55:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:55:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:59,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:55:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:55:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:55:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:55:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:55:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:59,850 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:55:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:55:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:55:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:55:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:55:59,851 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:55:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:55:59,852 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:55:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:55:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:55:59,853 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:55:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:55:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:55:59,854 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:55:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:55:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:55:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:55:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:55:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:55:59,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:56:00,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:56:00,926 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:56:00,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:00 BoogieIcfgContainer [2020-08-18 20:56:00,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:56:00,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:56:00,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:56:00,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:56:00,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:55:58" (1/3) ... [2020-08-18 20:56:00,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7d6cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:00, skipping insertion in model container [2020-08-18 20:56:00,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:59" (2/3) ... [2020-08-18 20:56:00,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7d6cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:00, skipping insertion in model container [2020-08-18 20:56:00,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:00" (3/3) ... [2020-08-18 20:56:00,940 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product07.cil.c [2020-08-18 20:56:00,951 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:56:00,959 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:56:00,973 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:56:00,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:56:00,996 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:56:00,996 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:56:00,996 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:56:00,996 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:56:00,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:56:00,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:56:00,997 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:56:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-08-18 20:56:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:56:01,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:01,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:01,028 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:01,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1046284201, now seen corresponding path program 1 times [2020-08-18 20:56:01,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:01,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616346425] [2020-08-18 20:56:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,783 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:01,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:01,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616346425] [2020-08-18 20:56:01,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:01,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:56:01,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458425862] [2020-08-18 20:56:01,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:56:01,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:01,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:56:01,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:56:01,944 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-08-18 20:56:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:02,978 INFO L93 Difference]: Finished difference Result 263 states and 350 transitions. [2020-08-18 20:56:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:56:02,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:56:02,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:02,995 INFO L225 Difference]: With dead ends: 263 [2020-08-18 20:56:02,996 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 20:56:03,001 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 [2020-08-18 20:56:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 20:56:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-08-18 20:56:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 20:56:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-08-18 20:56:03,091 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 52 [2020-08-18 20:56:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:03,091 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-08-18 20:56:03,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:56:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-08-18 20:56:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:56:03,095 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:03,095 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] [2020-08-18 20:56:03,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:56:03,096 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:03,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1021968907, now seen corresponding path program 1 times [2020-08-18 20:56:03,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:03,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648026496] [2020-08-18 20:56:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,387 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:56:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:56:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:03,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648026496] [2020-08-18 20:56:03,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:03,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:56:03,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704069257] [2020-08-18 20:56:03,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:56:03,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:03,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:56:03,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:56:03,463 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 4 states. [2020-08-18 20:56:03,882 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:04,526 INFO L93 Difference]: Finished difference Result 190 states and 233 transitions. [2020-08-18 20:56:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:56:04,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:56:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:04,529 INFO L225 Difference]: With dead ends: 190 [2020-08-18 20:56:04,529 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 20:56:04,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:56:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 20:56:04,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2020-08-18 20:56:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-18 20:56:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-08-18 20:56:04,583 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 53 [2020-08-18 20:56:04,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:04,584 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-08-18 20:56:04,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:56:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-08-18 20:56:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 20:56:04,590 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:04,591 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] [2020-08-18 20:56:04,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:56:04,591 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:04,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1636314529, now seen corresponding path program 1 times [2020-08-18 20:56:04,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:04,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250843424] [2020-08-18 20:56:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:04,957 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:04,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:56:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:56:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:56:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:05,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250843424] [2020-08-18 20:56:05,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:05,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:05,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593163157] [2020-08-18 20:56:05,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:05,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:05,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:05,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:05,072 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 8 states. [2020-08-18 20:56:05,452 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:05,765 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:06,006 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:06,284 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:07,021 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:08,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:08,427 INFO L93 Difference]: Finished difference Result 360 states and 450 transitions. [2020-08-18 20:56:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:56:08,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 20:56:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:08,433 INFO L225 Difference]: With dead ends: 360 [2020-08-18 20:56:08,433 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 20:56:08,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:56:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 20:56:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 228. [2020-08-18 20:56:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-18 20:56:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 277 transitions. [2020-08-18 20:56:08,518 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 277 transitions. Word has length 57 [2020-08-18 20:56:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:08,518 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 277 transitions. [2020-08-18 20:56:08,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 277 transitions. [2020-08-18 20:56:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 20:56:08,521 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:08,522 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] [2020-08-18 20:56:08,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:56:08,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:08,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:08,523 INFO L82 PathProgramCache]: Analyzing trace with hash -384943424, now seen corresponding path program 1 times [2020-08-18 20:56:08,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:08,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354247245] [2020-08-18 20:56:08,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,851 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:08,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:56:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:56:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:56:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:56:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:08,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354247245] [2020-08-18 20:56:08,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:08,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:08,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182510390] [2020-08-18 20:56:08,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:08,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:08,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:08,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:08,935 INFO L87 Difference]: Start difference. First operand 228 states and 277 transitions. Second operand 8 states. [2020-08-18 20:56:09,306 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:10,560 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:10,850 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:11,110 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:11,394 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:11,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:11,957 INFO L93 Difference]: Finished difference Result 696 states and 923 transitions. [2020-08-18 20:56:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:56:11,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 20:56:11,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:11,965 INFO L225 Difference]: With dead ends: 696 [2020-08-18 20:56:11,965 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 20:56:11,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:56:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 20:56:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 429. [2020-08-18 20:56:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-18 20:56:12,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 535 transitions. [2020-08-18 20:56:12,077 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 535 transitions. Word has length 63 [2020-08-18 20:56:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:12,078 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 535 transitions. [2020-08-18 20:56:12,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 535 transitions. [2020-08-18 20:56:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 20:56:12,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:12,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:12,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:56:12,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:12,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:12,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1334484666, now seen corresponding path program 1 times [2020-08-18 20:56:12,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:12,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745789580] [2020-08-18 20:56:12,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:56:12,140 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:56:12,140 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:56:12,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:56:12,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:56:12 BoogieIcfgContainer [2020-08-18 20:56:12,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:56:12,168 INFO L168 Benchmark]: Toolchain (without parser) took 13210.83 ms. Allocated memory was 139.5 MB in the beginning and 427.3 MB in the end (delta: 287.8 MB). Free memory was 101.3 MB in the beginning and 152.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 236.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:12,169 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:56:12,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.03 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 172.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:12,171 INFO L168 Benchmark]: Boogie Preprocessor took 103.36 ms. Allocated memory is still 202.4 MB. Free memory was 172.4 MB in the beginning and 168.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:12,171 INFO L168 Benchmark]: RCFGBuilder took 1182.46 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 168.4 MB in the beginning and 202.0 MB in the end (delta: -33.6 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:12,172 INFO L168 Benchmark]: TraceAbstraction took 11233.47 ms. Allocated memory was 235.4 MB in the beginning and 427.3 MB in the end (delta: 191.9 MB). Free memory was 200.5 MB in the beginning and 152.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 239.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:12,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.03 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 101.1 MB in the beginning and 172.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.36 ms. Allocated memory is still 202.4 MB. Free memory was 172.4 MB in the beginning and 168.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1182.46 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 168.4 MB in the beginning and 202.0 MB in the end (delta: -33.6 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11233.47 ms. Allocated memory was 235.4 MB in the beginning and 427.3 MB in the end (delta: 191.9 MB). Free memory was 200.5 MB in the beginning and 152.7 MB in the end (delta: 47.9 MB). Peak memory consumption was 239.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L87] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L811] int waterLevel = 1; [L812] int methaneLevelCritical = 0; [L165] int retValue_acc ; [L166] int tmp ; [L170] FCALL select_helpers() [L171] FCALL select_features() [L172] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L172] RET, EXPR valid_product() [L172] tmp = valid_product() [L174] COND TRUE \read(tmp) [L176] FCALL setup() [L177] CALL runTest() [L159] CALL test() [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 [L754] COND TRUE 1 [L756] COND TRUE splverifierCounter < 4 [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) [L766] CALL waterRise() [L829] COND TRUE waterLevel < 2 [L830] waterLevel = waterLevel + 1 [L766] RET waterRise() [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND FALSE !(\read(tmp___0)) [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND FALSE !(\read(tmp___2)) [L788] tmp___1 = __VERIFIER_nondet_int() [L790] COND TRUE \read(tmp___1) [L792] CALL stopSystem() [L732] COND FALSE !(\read(pumpRunning)) [L739] systemActive = 0 [L792] RET stopSystem() [L799] CALL timeShift() [L603] COND FALSE !(\read(pumpRunning)) [L610] COND FALSE !(\read(systemActive)) [L618] CALL __utac_acc__Specification3_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L560] int tmp___1 ; [L564] CALL, EXPR isMethaneLevelCritical() [L850] int retValue_acc ; [L853] retValue_acc = methaneLevelCritical [L854] return (retValue_acc); [L564] RET, EXPR isMethaneLevelCritical() [L564] tmp = isMethaneLevelCritical() [L566] COND FALSE !(\read(tmp)) [L570] CALL, EXPR getWaterLevel() [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); [L570] RET, EXPR getWaterLevel() [L570] tmp___0 = getWaterLevel() [L572] COND TRUE tmp___0 == 2 [L574] CALL, EXPR isPumpRunning() [L684] int retValue_acc ; [L687] retValue_acc = pumpRunning [L688] return (retValue_acc); [L574] RET, EXPR isPumpRunning() [L574] tmp___1 = isPumpRunning() [L576] COND FALSE !(\read(tmp___1)) [L580] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 213 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 417 SDtfs, 636 SDslu, 312 SDs, 0 SdLazy, 1610 SolverSat, 407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=429occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 174 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 61524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...