/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:52:18,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:52:18,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:52:18,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:52:18,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:52:18,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:52:18,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:52:18,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:52:18,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:52:18,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:52:18,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:52:18,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:52:18,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:52:18,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:52:18,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:52:18,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:52:18,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:52:18,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:52:18,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:52:18,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:52:18,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:52:18,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:52:18,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:52:18,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:52:18,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:52:18,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:52:18,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:52:18,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:52:18,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:52:18,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:52:18,750 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:52:18,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:52:18,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:52:18,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:52:18,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:52:18,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:52:18,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:52:18,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:52:18,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:52:18,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:52:18,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:52:18,759 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 [2020-08-22 02:52:18,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:52:18,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:52:18,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:52:18,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:52:18,803 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:52:18,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:52:18,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:52:18,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:52:18,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:52:18,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:52:18,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:52:18,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:52:18,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:52:18,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:52:18,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:52:18,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:52:18,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:52:18,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:52:18,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:52:18,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:52:18,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:52:18,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:52:18,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:52:18,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:52:18,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:52:18,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:52:18,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:52:18,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:52:18,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:52:18,809 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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 02:52:19,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:52:19,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:52:19,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:52:19,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:52:19,129 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:52:19,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-08-22 02:52:19,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf9204e12/aeda9aaf79834e5e9d665fdd45a3a35e/FLAG3c6fbd272 [2020-08-22 02:52:19,738 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:52:19,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product22.cil.c [2020-08-22 02:52:19,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf9204e12/aeda9aaf79834e5e9d665fdd45a3a35e/FLAG3c6fbd272 [2020-08-22 02:52:20,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf9204e12/aeda9aaf79834e5e9d665fdd45a3a35e [2020-08-22 02:52:20,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:52:20,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:52:20,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:52:20,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:52:20,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:52:20,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0f47c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20, skipping insertion in model container [2020-08-22 02:52:20,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:52:20,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:52:20,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:52:20,591 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:52:20,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:52:20,712 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:52:20,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20 WrapperNode [2020-08-22 02:52:20,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:52:20,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:52:20,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:52:20,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:52:20,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (1/1) ... [2020-08-22 02:52:20,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:52:20,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:52:20,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:52:20,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:52:20,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (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 [2020-08-22 02:52:20,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:52:20,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:52:20,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:52:20,877 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:52:20,877 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:52:20,878 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:52:20,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:52:20,878 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:52:20,879 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:52:20,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 02:52:20,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:52:20,880 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:52:20,880 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:52:20,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:52:20,880 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:52:20,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:52:20,881 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:52:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:52:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:52:20,882 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:52:20,883 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:52:20,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:52:20,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 02:52:20,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:52:20,884 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:52:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:52:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:52:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:52:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:52:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 02:52:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:52:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:52:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:52:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:52:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:52:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:52:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:52:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:52:20,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:52:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:52:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:52:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:52:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:52:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:52:20,888 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:52:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:52:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:52:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:52:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 02:52:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:52:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:52:20,889 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:52:20,890 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:52:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:52:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:52:20,891 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:52:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:52:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:52:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:52:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:52:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:52:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:52:20,892 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:52:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:52:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:52:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:52:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:52:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 02:52:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:52:20,893 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:52:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 02:52:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-22 02:52:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:52:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:52:20,895 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:52:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:52:20,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:52:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:52:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:52:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:52:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:52:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:52:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:52:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:52:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:52:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:52:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:52:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:52:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:52:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:52:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:52:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:52:21,941 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:52:21,942 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:52:21,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:52:21 BoogieIcfgContainer [2020-08-22 02:52:21,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:52:21,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:52:21,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:52:21,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:52:21,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:52:20" (1/3) ... [2020-08-22 02:52:21,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58815414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:52:21, skipping insertion in model container [2020-08-22 02:52:21,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:52:20" (2/3) ... [2020-08-22 02:52:21,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58815414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:52:21, skipping insertion in model container [2020-08-22 02:52:21,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:52:21" (3/3) ... [2020-08-22 02:52:21,957 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product22.cil.c [2020-08-22 02:52:21,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:52:21,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:52:21,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:52:22,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:52:22,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:52:22,017 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:52:22,018 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:52:22,018 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:52:22,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:52:22,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:52:22,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:52:22,041 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-22 02:52:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 02:52:22,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:22,054 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] [2020-08-22 02:52:22,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:22,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash 578570237, now seen corresponding path program 1 times [2020-08-22 02:52:22,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:22,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922931667] [2020-08-22 02:52:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,743 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:52:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:52:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:52:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:22,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922931667] [2020-08-22 02:52:22,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:22,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:52:22,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247964786] [2020-08-22 02:52:22,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:52:22,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:22,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:52:22,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:52:22,908 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-22 02:52:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:24,041 INFO L93 Difference]: Finished difference Result 300 states and 394 transitions. [2020-08-22 02:52:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:52:24,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 02:52:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:24,059 INFO L225 Difference]: With dead ends: 300 [2020-08-22 02:52:24,059 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 02:52:24,064 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 [2020-08-22 02:52:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 02:52:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 129. [2020-08-22 02:52:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 02:52:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2020-08-22 02:52:24,166 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2020-08-22 02:52:24,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:24,171 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2020-08-22 02:52:24,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:52:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2020-08-22 02:52:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 02:52:24,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:24,179 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] [2020-08-22 02:52:24,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:52:24,180 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:24,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:24,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1188326363, now seen corresponding path program 1 times [2020-08-22 02:52:24,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:24,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545652113] [2020-08-22 02:52:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,537 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:24,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:52:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:52:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:52:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:24,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545652113] [2020-08-22 02:52:24,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:24,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:52:24,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730640087] [2020-08-22 02:52:24,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:52:24,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:24,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:52:24,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:52:24,585 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2020-08-22 02:52:24,978 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:52:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:25,834 INFO L93 Difference]: Finished difference Result 229 states and 281 transitions. [2020-08-22 02:52:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:52:25,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 02:52:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:25,838 INFO L225 Difference]: With dead ends: 229 [2020-08-22 02:52:25,838 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 02:52:25,840 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 [2020-08-22 02:52:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 02:52:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-22 02:52:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 02:52:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-22 02:52:25,875 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2020-08-22 02:52:25,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:25,876 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-22 02:52:25,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:52:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-22 02:52:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 02:52:25,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:25,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:52:25,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:52:25,879 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:25,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1564710697, now seen corresponding path program 1 times [2020-08-22 02:52:25,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:25,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059471935] [2020-08-22 02:52:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,209 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:26,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:52:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:52:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:52:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:26,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059471935] [2020-08-22 02:52:26,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:26,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:52:26,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746039208] [2020-08-22 02:52:26,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:52:26,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:26,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:52:26,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:52:26,280 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2020-08-22 02:52:26,610 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:52:26,966 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:27,224 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:27,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:28,696 INFO L93 Difference]: Finished difference Result 242 states and 299 transitions. [2020-08-22 02:52:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 02:52:28,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 02:52:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:28,704 INFO L225 Difference]: With dead ends: 242 [2020-08-22 02:52:28,704 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 02:52:28,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:52:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 02:52:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-08-22 02:52:28,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 02:52:28,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2020-08-22 02:52:28,744 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 58 [2020-08-22 02:52:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:28,744 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2020-08-22 02:52:28,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:52:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2020-08-22 02:52:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 02:52:28,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:28,748 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:52:28,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:52:28,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:28,748 INFO L82 PathProgramCache]: Analyzing trace with hash -203175812, now seen corresponding path program 1 times [2020-08-22 02:52:28,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:28,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185024349] [2020-08-22 02:52:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,048 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:52:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:52:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:52:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:52:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:52:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:52:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:52:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:52:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:52:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:52:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 02:52:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 02:52:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:52:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:52:29,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185024349] [2020-08-22 02:52:29,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:52:29,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:52:29,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064324309] [2020-08-22 02:52:29,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:52:29,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:52:29,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:52:29,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:52:29,227 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 8 states. [2020-08-22 02:52:29,562 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:52:31,197 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:31,488 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:31,734 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:52:32,146 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:52:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:52:32,538 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2020-08-22 02:52:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:52:32,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-08-22 02:52:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:52:32,544 INFO L225 Difference]: With dead ends: 363 [2020-08-22 02:52:32,544 INFO L226 Difference]: Without dead ends: 267 [2020-08-22 02:52:32,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:52:32,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-22 02:52:32,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 216. [2020-08-22 02:52:32,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-22 02:52:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-22 02:52:32,599 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 71 [2020-08-22 02:52:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:52:32,599 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-22 02:52:32,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:52:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-22 02:52:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-22 02:52:32,603 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:52:32,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:52:32,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:52:32,603 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:52:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:52:32,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1511330786, now seen corresponding path program 1 times [2020-08-22 02:52:32,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:52:32,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236178975] [2020-08-22 02:52:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:52:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:52:32,670 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:52:32,670 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:52:32,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:52:32,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:52:32 BoogieIcfgContainer [2020-08-22 02:52:32,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:52:32,700 INFO L168 Benchmark]: Toolchain (without parser) took 12630.85 ms. Allocated memory was 140.5 MB in the beginning and 424.1 MB in the end (delta: 283.6 MB). Free memory was 101.5 MB in the beginning and 188.6 MB in the end (delta: -87.1 MB). Peak memory consumption was 196.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:32,701 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:52:32,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.21 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 170.0 MB in the end (delta: -68.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:32,703 INFO L168 Benchmark]: Boogie Preprocessor took 93.27 ms. Allocated memory is still 203.4 MB. Free memory was 170.0 MB in the beginning and 165.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:32,703 INFO L168 Benchmark]: RCFGBuilder took 1139.86 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 193.8 MB in the end (delta: -28.3 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:32,704 INFO L168 Benchmark]: TraceAbstraction took 10749.48 ms. Allocated memory was 235.4 MB in the beginning and 424.1 MB in the end (delta: 188.7 MB). Free memory was 192.5 MB in the beginning and 188.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 192.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:52:32,708 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.21 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 170.0 MB in the end (delta: -68.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.27 ms. Allocated memory is still 203.4 MB. Free memory was 170.0 MB in the beginning and 165.5 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1139.86 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 165.5 MB in the beginning and 193.8 MB in the end (delta: -28.3 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10749.48 ms. Allocated memory was 235.4 MB in the beginning and 424.1 MB in the end (delta: 188.7 MB). Free memory was 192.5 MB in the beginning and 188.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 192.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L145] int cleanupTimeShifts = 4; [L286] int pumpRunning = 0; [L287] int systemActive = 1; [L709] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L229] FCALL select_helpers() [L230] FCALL select_features() [L231] CALL, EXPR valid_product() [L273] int retValue_acc ; [L276] retValue_acc = 1 [L277] return (retValue_acc); [L231] RET, EXPR valid_product() [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L235] FCALL setup() [L236] CALL runTest() [L215] CALL test() [L474] int splverifierCounter ; [L475] int tmp ; [L476] int tmp___0 ; [L477] int tmp___1 ; [L478] int tmp___2 ; [L481] splverifierCounter = 0 [L483] COND TRUE 1 [L485] COND TRUE splverifierCounter < 4 [L491] tmp = __VERIFIER_nondet_int() [L493] COND TRUE \read(tmp) [L495] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L495] RET waterRise() [L501] tmp___0 = __VERIFIER_nondet_int() [L503] COND FALSE !(\read(tmp___0)) [L511] tmp___2 = __VERIFIER_nondet_int() [L513] COND FALSE !(\read(tmp___2)) [L519] tmp___1 = __VERIFIER_nondet_int() [L521] COND TRUE \read(tmp___1) [L528] CALL timeShift() [L294] COND FALSE !(\read(pumpRunning)) [L301] COND TRUE \read(systemActive) [L303] CALL processEnvironment() [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L367] CALL processEnvironment__wrappee__lowWaterSensor() [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L341] FCALL processEnvironment__wrappee__base() [L367] RET processEnvironment__wrappee__lowWaterSensor() [L303] RET processEnvironment() [L309] CALL __utac_acc__Specification3_spec__1() [L907] int tmp ; [L908] int tmp___0 ; [L909] int tmp___1 ; [L913] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L913] RET, EXPR isMethaneLevelCritical() [L913] tmp = isMethaneLevelCritical() [L915] COND FALSE !(\read(tmp)) [L919] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L919] RET, EXPR getWaterLevel() [L919] tmp___0 = getWaterLevel() [L921] COND TRUE tmp___0 == 2 [L923] CALL, EXPR isPumpRunning() [L401] int retValue_acc ; [L404] retValue_acc = pumpRunning [L405] return (retValue_acc); [L923] RET, EXPR isPumpRunning() [L923] tmp___1 = isPumpRunning() [L925] COND FALSE !(\read(tmp___1)) [L929] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 454 SDtfs, 663 SDslu, 248 SDs, 0 SdLazy, 1496 SolverSat, 429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 136 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 65062 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...