/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:54:23,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:54:23,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:54:23,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:54:23,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:54:23,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:54:23,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:54:23,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:54:23,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:54:23,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:54:23,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:54:23,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:54:23,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:54:23,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:54:23,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:54:23,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:54:23,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:54:23,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:54:23,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:54:23,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:54:23,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:54:23,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:54:23,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:54:23,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:54:23,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:54:23,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:54:23,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:54:23,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:54:23,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:54:23,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:54:23,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:54:23,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:54:23,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:54:23,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:54:23,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:54:23,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:54:23,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:54:23,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:54:23,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:54:23,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:54:23,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:54:23,676 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 16:54:23,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:54:23,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:54:23,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:54:23,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:54:23,700 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:54:23,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:54:23,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:54:23,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:54:23,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:54:23,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:54:23,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:54:23,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:54:23,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:54:23,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:54:23,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:54:23,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:54:23,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:54:23,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:54:23,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:54:23,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:54:23,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:54:23,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:54:23,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:54:23,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:54:23,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:54:23,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:54:23,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:54:23,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:54:23,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:54:23,705 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:54:23,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:54:24,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:54:24,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:54:24,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:54:24,013 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:54:24,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-08-18 16:54:24,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21340ce65/e4b0cad91dd24da5b6b3350db68cac04/FLAGa074529c5 [2020-08-18 16:54:24,755 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:54:24,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-08-18 16:54:24,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21340ce65/e4b0cad91dd24da5b6b3350db68cac04/FLAGa074529c5 [2020-08-18 16:54:25,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21340ce65/e4b0cad91dd24da5b6b3350db68cac04 [2020-08-18 16:54:25,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:54:25,036 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:54:25,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:25,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:54:25,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:54:25,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d7c338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25, skipping insertion in model container [2020-08-18 16:54:25,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:54:25,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:54:25,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:25,518 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:54:25,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:25,651 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:54:25,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25 WrapperNode [2020-08-18 16:54:25,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:25,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:54:25,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:54:25,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:54:25,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (1/1) ... [2020-08-18 16:54:25,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:54:25,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:54:25,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:54:25,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:54:25,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (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 16:54:25,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:54:25,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:54:25,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:25,828 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:54:25,829 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:54:25,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:54:25,829 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:54:25,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:54:25,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:54:25,829 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:54:25,830 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:54:25,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:54:25,831 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-18 16:54:25,831 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:54:25,831 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:54:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:54:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:54:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:54:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:54:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:54:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:54:25,833 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:54:25,833 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:54:25,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:25,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:25,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:25,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:54:25,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:54:25,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:54:25,834 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:54:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:54:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:54:25,837 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:54:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:54:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:54:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:54:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:54:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:54:25,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:54:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:54:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:54:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:54:25,839 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:54:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:54:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:54:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:54:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:54:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:54:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-18 16:54:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:54:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:54:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:54:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:54:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:54:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:54:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:54:25,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:54:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:54:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:54:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:54:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:54:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:54:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:54:26,963 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:54:26,963 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:54:26,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:26 BoogieIcfgContainer [2020-08-18 16:54:26,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:54:26,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:54:26,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:54:26,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:54:26,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:54:25" (1/3) ... [2020-08-18 16:54:26,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a724e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:26, skipping insertion in model container [2020-08-18 16:54:26,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:25" (2/3) ... [2020-08-18 16:54:26,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a724e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:26, skipping insertion in model container [2020-08-18 16:54:26,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:26" (3/3) ... [2020-08-18 16:54:26,977 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product09.cil.c [2020-08-18 16:54:26,987 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:54:26,995 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:54:27,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:54:27,033 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:54:27,033 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:54:27,033 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:54:27,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:54:27,034 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:54:27,034 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:54:27,034 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:54:27,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:54:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2020-08-18 16:54:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:54:27,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:27,072 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 16:54:27,072 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:27,079 INFO L82 PathProgramCache]: Analyzing trace with hash -243884949, now seen corresponding path program 1 times [2020-08-18 16:54:27,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:27,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010614858] [2020-08-18 16:54:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,717 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:54:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:54:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:54:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,875 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 16:54:27,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010614858] [2020-08-18 16:54:27,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:27,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:54:27,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219540908] [2020-08-18 16:54:27,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:54:27,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:27,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:54:27,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:54:27,920 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 3 states. [2020-08-18 16:54:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:28,901 INFO L93 Difference]: Finished difference Result 211 states and 284 transitions. [2020-08-18 16:54:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:54:28,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:54:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:28,917 INFO L225 Difference]: With dead ends: 211 [2020-08-18 16:54:28,918 INFO L226 Difference]: Without dead ends: 115 [2020-08-18 16:54:28,922 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 16:54:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-18 16:54:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2020-08-18 16:54:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-18 16:54:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-18 16:54:29,026 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 52 [2020-08-18 16:54:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:29,028 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-18 16:54:29,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:54:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-18 16:54:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:54:29,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:29,034 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 16:54:29,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:54:29,035 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash -665178200, now seen corresponding path program 1 times [2020-08-18 16:54:29,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:29,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942268360] [2020-08-18 16:54:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,396 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:54:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:54:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:54:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:29,442 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 16:54:29,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942268360] [2020-08-18 16:54:29,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:29,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:54:29,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81082288] [2020-08-18 16:54:29,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:54:29,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:29,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:54:29,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:54:29,446 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 4 states. [2020-08-18 16:54:29,863 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:30,299 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2020-08-18 16:54:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:54:30,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:54:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:30,303 INFO L225 Difference]: With dead ends: 144 [2020-08-18 16:54:30,303 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 16:54:30,304 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 16:54:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 16:54:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 16:54:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 16:54:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 16:54:30,356 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 53 [2020-08-18 16:54:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:30,356 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 16:54:30,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:54:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 16:54:30,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 16:54:30,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:30,358 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 16:54:30,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:54:30,359 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:30,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:30,359 INFO L82 PathProgramCache]: Analyzing trace with hash 884065604, now seen corresponding path program 1 times [2020-08-18 16:54:30,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:30,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007525036] [2020-08-18 16:54:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,673 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:30,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:54:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:54:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:54:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:30,803 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 16:54:30,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007525036] [2020-08-18 16:54:30,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:30,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:54:30,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899376536] [2020-08-18 16:54:30,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:54:30,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:30,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:54:30,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:54:30,808 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 8 states. [2020-08-18 16:54:31,196 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:31,494 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:31,736 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:31,979 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:32,658 INFO L93 Difference]: Finished difference Result 153 states and 189 transitions. [2020-08-18 16:54:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 16:54:32,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 16:54:32,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:32,661 INFO L225 Difference]: With dead ends: 153 [2020-08-18 16:54:32,661 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 16:54:32,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:54:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 16:54:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 16:54:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 16:54:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-08-18 16:54:32,686 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 57 [2020-08-18 16:54:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:32,687 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-08-18 16:54:32,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:54:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-08-18 16:54:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:54:32,689 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:32,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:54:32,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:54:32,690 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:32,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1049632545, now seen corresponding path program 1 times [2020-08-18 16:54:32,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:32,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329800716] [2020-08-18 16:54:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:32,988 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:32,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:54:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:54:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 16:54:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 16:54:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:33,063 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 16:54:33,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329800716] [2020-08-18 16:54:33,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:33,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:54:33,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638967214] [2020-08-18 16:54:33,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:54:33,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:54:33,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:54:33,068 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 7 states. [2020-08-18 16:54:33,418 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:34,294 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:34,573 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:34,824 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:35,079 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:35,337 INFO L93 Difference]: Finished difference Result 196 states and 245 transitions. [2020-08-18 16:54:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:54:35,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-08-18 16:54:35,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:35,340 INFO L225 Difference]: With dead ends: 196 [2020-08-18 16:54:35,340 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 16:54:35,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:54:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 16:54:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2020-08-18 16:54:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 16:54:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-18 16:54:35,375 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 60 [2020-08-18 16:54:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:35,375 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-18 16:54:35,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:54:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-18 16:54:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:54:35,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:35,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:54:35,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:54:35,378 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:35,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:35,379 INFO L82 PathProgramCache]: Analyzing trace with hash -509227045, now seen corresponding path program 1 times [2020-08-18 16:54:35,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:35,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452857256] [2020-08-18 16:54:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:54:35,439 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:54:35,440 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:54:35,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:54:35,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:54:35 BoogieIcfgContainer [2020-08-18 16:54:35,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:54:35,467 INFO L168 Benchmark]: Toolchain (without parser) took 10431.02 ms. Allocated memory was 140.5 MB in the beginning and 408.9 MB in the end (delta: 268.4 MB). Free memory was 102.3 MB in the beginning and 333.9 MB in the end (delta: -231.6 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:35,468 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:54:35,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.06 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 172.9 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:35,469 INFO L168 Benchmark]: Boogie Preprocessor took 92.02 ms. Allocated memory is still 203.9 MB. Free memory was 172.9 MB in the beginning and 168.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:35,470 INFO L168 Benchmark]: RCFGBuilder took 1223.56 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 168.9 MB in the beginning and 198.9 MB in the end (delta: -30.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:35,471 INFO L168 Benchmark]: TraceAbstraction took 8495.35 ms. Allocated memory was 234.9 MB in the beginning and 408.9 MB in the end (delta: 174.1 MB). Free memory was 198.9 MB in the beginning and 333.9 MB in the end (delta: -135.0 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:35,475 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.06 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 172.9 MB in the end (delta: -70.8 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.02 ms. Allocated memory is still 203.9 MB. Free memory was 172.9 MB in the beginning and 168.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1223.56 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 168.9 MB in the beginning and 198.9 MB in the end (delta: -30.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8495.35 ms. Allocated memory was 234.9 MB in the beginning and 408.9 MB in the end (delta: 174.1 MB). Free memory was 198.9 MB in the beginning and 333.9 MB in the end (delta: -135.0 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 148]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L224] int pumpRunning = 0; [L225] int systemActive = 1; [L589] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L786] int waterLevel = 1; [L787] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L411] int retValue_acc ; [L414] retValue_acc = 1 [L415] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L154] int splverifierCounter ; [L155] int tmp ; [L156] int tmp___0 ; [L157] int tmp___1 ; [L158] int tmp___2 ; [L161] splverifierCounter = 0 [L163] COND TRUE 1 [L165] COND TRUE splverifierCounter < 4 [L171] tmp = __VERIFIER_nondet_int() [L173] COND TRUE \read(tmp) [L175] CALL waterRise() [L804] COND TRUE waterLevel < 2 [L805] waterLevel = waterLevel + 1 [L175] RET waterRise() [L181] tmp___0 = __VERIFIER_nondet_int() [L183] COND FALSE !(\read(tmp___0)) [L191] tmp___2 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___2) [L206] CALL timeShift() [L232] COND FALSE !(\read(pumpRunning)) [L239] COND TRUE \read(systemActive) [L241] FCALL processEnvironment() [L247] CALL __utac_acc__Specification3_spec__1() [L352] int tmp ; [L353] int tmp___0 ; [L354] int tmp___1 ; [L358] CALL, EXPR isMethaneLevelCritical() [L825] int retValue_acc ; [L828] retValue_acc = methaneLevelCritical [L829] return (retValue_acc); [L358] RET, EXPR isMethaneLevelCritical() [L358] tmp = isMethaneLevelCritical() [L360] COND FALSE !(\read(tmp)) [L364] CALL, EXPR getWaterLevel() [L857] int retValue_acc ; [L860] retValue_acc = waterLevel [L861] return (retValue_acc); [L364] RET, EXPR getWaterLevel() [L364] tmp___0 = getWaterLevel() [L366] COND TRUE tmp___0 == 2 [L368] CALL, EXPR isPumpRunning() [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L368] RET, EXPR isPumpRunning() [L368] tmp___1 = isPumpRunning() [L370] COND FALSE !(\read(tmp___1)) [L374] CALL __automaton_fail() [L148] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 204 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 302 SDtfs, 404 SDslu, 175 SDs, 0 SdLazy, 882 SolverSat, 230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 84 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 59906 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...