/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:35:18,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:35:18,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:35:18,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:35:18,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:35:18,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:35:18,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:35:18,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:35:18,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:35:18,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:35:18,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:35:18,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:35:18,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:35:18,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:35:18,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:35:18,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:35:18,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:35:18,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:35:18,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:35:18,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:35:18,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:35:18,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:35:18,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:35:18,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:35:18,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:35:18,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:35:18,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:35:18,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:35:18,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:35:18,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:35:18,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:35:18,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:35:18,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:35:18,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:35:18,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:35:18,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:35:18,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:35:18,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:35:18,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:35:18,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:35:18,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:35:18,610 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 [2020-08-21 19:35:18,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:35:18,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:35:18,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:35:18,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:35:18,655 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:35:18,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:35:18,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:35:18,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:35:18,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:35:18,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:35:18,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:35:18,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:35:18,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:35:18,658 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:35:18,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:35:18,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:35:18,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:35:18,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:35:18,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:35:18,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:35:18,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:35:18,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:35:18,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:35:18,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:35:18,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:35:18,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:35:18,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:35:18,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:35:18,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:35:18,661 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=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:35:18,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:35:18,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:35:18,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:35:18,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:35:18,958 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:35:18,959 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-08-21 19:35:19,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42385be4f/a06ab8a74c1e42039f688b9e5fc97d88/FLAG1087bef42 [2020-08-21 19:35:19,574 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:35:19,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-08-21 19:35:19,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42385be4f/a06ab8a74c1e42039f688b9e5fc97d88/FLAG1087bef42 [2020-08-21 19:35:19,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42385be4f/a06ab8a74c1e42039f688b9e5fc97d88 [2020-08-21 19:35:19,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:35:19,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:35:19,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:19,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:35:19,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:35:19,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:19" (1/1) ... [2020-08-21 19:35:19,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:19, skipping insertion in model container [2020-08-21 19:35:19,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:19" (1/1) ... [2020-08-21 19:35:19,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:35:19,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:35:20,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:20,420 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:35:20,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:20,583 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:35:20,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20 WrapperNode [2020-08-21 19:35:20,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:20,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:35:20,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:35:20,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:35:20,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (1/1) ... [2020-08-21 19:35:20,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (1/1) ... [2020-08-21 19:35:20,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (1/1) ... [2020-08-21 19:35:20,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (1/1) ... [2020-08-21 19:35:20,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (1/1) ... [2020-08-21 19:35:20,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (1/1) ... [2020-08-21 19:35:20,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (1/1) ... [2020-08-21 19:35:20,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:35:20,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:35:20,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:35:20,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:35:20,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (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 [2020-08-21 19:35:20,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:35:20,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:35:20,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:20,770 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:35:20,770 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:35:20,771 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:35:20,771 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:35:20,771 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 19:35:20,771 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:35:20,772 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:35:20,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:35:20,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:35:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:35:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 19:35:20,773 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 19:35:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:35:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:35:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:35:20,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:35:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:35:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:20,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:35:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:35:20,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:35:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:35:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:35:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:35:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:35:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:35:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:35:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 19:35:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:35:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:35:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:35:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:35:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:35:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:35:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:35:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:35:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:35:20,779 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:35:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 19:35:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:35:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:35:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:35:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:35:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:35:20,780 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:35:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 19:35:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:35:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:35:20,781 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:35:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:35:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:35:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:35:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 19:35:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 19:35:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:35:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:35:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:35:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:35:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:35:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:35:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:35:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:35:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:35:20,784 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:35:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:35:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:35:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:35:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:35:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:35:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:35:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:35:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:35:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:35:20,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:35:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:35:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:35:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:35:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:35:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:35:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:35:20,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:35:21,973 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:35:21,974 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:35:21,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:21 BoogieIcfgContainer [2020-08-21 19:35:21,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:35:21,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:35:21,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:35:21,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:35:21,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:35:19" (1/3) ... [2020-08-21 19:35:21,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ac8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:21, skipping insertion in model container [2020-08-21 19:35:21,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:20" (2/3) ... [2020-08-21 19:35:21,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4ac8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:21, skipping insertion in model container [2020-08-21 19:35:21,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:21" (3/3) ... [2020-08-21 19:35:21,988 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2020-08-21 19:35:21,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:35:22,007 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:35:22,021 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:35:22,046 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:35:22,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:35:22,047 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:35:22,047 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:35:22,047 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:35:22,047 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:35:22,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:35:22,048 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:35:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 19:35:22,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 19:35:22,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:22,085 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] [2020-08-21 19:35:22,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:22,091 INFO L82 PathProgramCache]: Analyzing trace with hash -527888635, now seen corresponding path program 1 times [2020-08-21 19:35:22,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:22,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066675929] [2020-08-21 19:35:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,741 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:22,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:35:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:35:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:35:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:22,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066675929] [2020-08-21 19:35:22,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:22,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:35:22,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487920085] [2020-08-21 19:35:22,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:35:22,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:22,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:35:22,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:35:22,875 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 19:35:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:23,962 INFO L93 Difference]: Finished difference Result 273 states and 360 transitions. [2020-08-21 19:35:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:35:23,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 19:35:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:23,980 INFO L225 Difference]: With dead ends: 273 [2020-08-21 19:35:23,980 INFO L226 Difference]: Without dead ends: 148 [2020-08-21 19:35:23,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:35:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-21 19:35:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-08-21 19:35:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 19:35:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 19:35:24,093 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52 [2020-08-21 19:35:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:24,093 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 19:35:24,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:35:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 19:35:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 19:35:24,098 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:24,098 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] [2020-08-21 19:35:24,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:35:24,098 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:24,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:24,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1019297795, now seen corresponding path program 1 times [2020-08-21 19:35:24,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:24,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138137177] [2020-08-21 19:35:24,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,429 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:35:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:35:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 19:35:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:24,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138137177] [2020-08-21 19:35:24,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:24,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:35:24,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894448581] [2020-08-21 19:35:24,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:35:24,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:24,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:35:24,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:35:24,512 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-08-21 19:35:24,933 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:35:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:25,641 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2020-08-21 19:35:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:35:25,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 19:35:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:25,646 INFO L225 Difference]: With dead ends: 200 [2020-08-21 19:35:25,646 INFO L226 Difference]: Without dead ends: 132 [2020-08-21 19:35:25,648 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 [2020-08-21 19:35:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-21 19:35:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-08-21 19:35:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 19:35:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-08-21 19:35:25,685 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53 [2020-08-21 19:35:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:25,685 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-08-21 19:35:25,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:35:25,686 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-08-21 19:35:25,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 19:35:25,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:25,688 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] [2020-08-21 19:35:25,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:35:25,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:25,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:25,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1975816461, now seen corresponding path program 1 times [2020-08-21 19:35:25,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:25,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451098019] [2020-08-21 19:35:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,025 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:35:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:35:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:35:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:26,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451098019] [2020-08-21 19:35:26,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:26,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:26,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191643135] [2020-08-21 19:35:26,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:26,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:26,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:26,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:26,224 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 8 states. [2020-08-21 19:35:26,569 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:26,885 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:27,127 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:27,399 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:28,115 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:35:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:29,662 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2020-08-21 19:35:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:35:29,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 19:35:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:29,672 INFO L225 Difference]: With dead ends: 375 [2020-08-21 19:35:29,672 INFO L226 Difference]: Without dead ends: 292 [2020-08-21 19:35:29,674 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 [2020-08-21 19:35:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-21 19:35:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-08-21 19:35:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 19:35:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2020-08-21 19:35:29,744 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 57 [2020-08-21 19:35:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:29,745 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2020-08-21 19:35:29,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2020-08-21 19:35:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 19:35:29,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:29,748 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] [2020-08-21 19:35:29,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:35:29,749 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:29,749 INFO L82 PathProgramCache]: Analyzing trace with hash -872029399, now seen corresponding path program 1 times [2020-08-21 19:35:29,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:29,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648104031] [2020-08-21 19:35:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,110 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:35:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:35:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:35:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:35:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:30,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648104031] [2020-08-21 19:35:30,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:30,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:30,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041257956] [2020-08-21 19:35:30,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:30,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:30,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:30,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:30,241 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand 8 states. [2020-08-21 19:35:30,630 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:31,895 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:32,225 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:32,513 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:32,772 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:33,392 INFO L93 Difference]: Finished difference Result 726 states and 953 transitions. [2020-08-21 19:35:33,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:35:33,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 19:35:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:33,400 INFO L225 Difference]: With dead ends: 726 [2020-08-21 19:35:33,401 INFO L226 Difference]: Without dead ends: 512 [2020-08-21 19:35:33,403 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 [2020-08-21 19:35:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-08-21 19:35:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 449. [2020-08-21 19:35:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-21 19:35:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 555 transitions. [2020-08-21 19:35:33,547 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 555 transitions. Word has length 63 [2020-08-21 19:35:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:33,548 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 555 transitions. [2020-08-21 19:35:33,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 555 transitions. [2020-08-21 19:35:33,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 19:35:33,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:33,552 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] [2020-08-21 19:35:33,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:35:33,553 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:33,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1867456273, now seen corresponding path program 1 times [2020-08-21 19:35:33,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:33,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398050912] [2020-08-21 19:35:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:35:33,615 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:35:33,615 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:35:33,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:35:33,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:35:33 BoogieIcfgContainer [2020-08-21 19:35:33,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:35:33,646 INFO L168 Benchmark]: Toolchain (without parser) took 13783.86 ms. Allocated memory was 140.0 MB in the beginning and 427.8 MB in the end (delta: 287.8 MB). Free memory was 102.1 MB in the beginning and 88.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 301.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:33,647 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:35:33,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.66 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 170.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:33,649 INFO L168 Benchmark]: Boogie Preprocessor took 98.12 ms. Allocated memory is still 202.9 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:33,650 INFO L168 Benchmark]: RCFGBuilder took 1292.91 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.5 MB in the beginning and 196.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:33,651 INFO L168 Benchmark]: TraceAbstraction took 11663.49 ms. Allocated memory was 235.9 MB in the beginning and 427.8 MB in the end (delta: 191.9 MB). Free memory was 195.4 MB in the beginning and 88.0 MB in the end (delta: 107.4 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:33,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.66 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 170.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.12 ms. Allocated memory is still 202.9 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1292.91 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.5 MB in the beginning and 196.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11663.49 ms. Allocated memory was 235.9 MB in the beginning and 427.8 MB in the end (delta: 191.9 MB). Free memory was 195.4 MB in the beginning and 88.0 MB in the end (delta: 107.4 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 346]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L558] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L755] int waterLevel = 1; [L756] int methaneLevelCritical = 0; [L844] int cleanupTimeShifts = 4; [L917] int retValue_acc ; [L918] int tmp ; [L922] FCALL select_helpers() [L923] FCALL select_features() [L924] CALL, EXPR valid_product() [L380] int retValue_acc ; [L383] retValue_acc = 1 [L384] return (retValue_acc); [L924] RET, EXPR valid_product() [L924] tmp = valid_product() [L926] COND TRUE \read(tmp) [L928] FCALL setup() [L929] CALL runTest() [L911] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L773] COND TRUE waterLevel < 2 [L774] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___2)) [L89] tmp___1 = __VERIFIER_nondet_int() [L91] COND TRUE \read(tmp___1) [L93] CALL stopSystem() [L294] COND FALSE !(\read(pumpRunning)) [L301] systemActive = 0 [L93] RET stopSystem() [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND FALSE !(\read(systemActive)) [L143] CALL __utac_acc__Specification3_spec__1() [L309] int tmp ; [L310] int tmp___0 ; [L311] int tmp___1 ; [L315] CALL, EXPR isMethaneLevelCritical() [L794] int retValue_acc ; [L797] retValue_acc = methaneLevelCritical [L798] return (retValue_acc); [L315] RET, EXPR isMethaneLevelCritical() [L315] tmp = isMethaneLevelCritical() [L317] COND FALSE !(\read(tmp)) [L321] CALL, EXPR getWaterLevel() [L826] int retValue_acc ; [L829] retValue_acc = waterLevel [L830] return (retValue_acc); [L321] RET, EXPR getWaterLevel() [L321] tmp___0 = getWaterLevel() [L323] COND TRUE tmp___0 == 2 [L325] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L325] RET, EXPR isPumpRunning() [L325] tmp___1 = isPumpRunning() [L327] COND FALSE !(\read(tmp___1)) [L331] CALL __automaton_fail() [L346] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 683 SDslu, 306 SDs, 0 SdLazy, 1673 SolverSat, 407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s 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=449occurred 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, 0.2s SatisfiabilityAnalysisTime, 1.7s 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...