/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:50:26,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:50:26,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:50:26,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:50:26,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:50:26,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:50:26,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:50:26,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:50:26,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:50:26,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:50:26,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:50:26,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:50:26,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:50:26,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:50:26,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:50:26,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:50:26,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:50:26,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:50:26,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:50:26,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:50:26,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:50:26,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:50:26,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:50:26,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:50:26,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:50:26,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:50:26,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:50:26,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:50:26,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:50:26,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:50:26,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:50:26,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:50:26,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:50:26,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:50:26,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:50:26,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:50:26,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:50:26,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:50:26,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:50:26,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:50:26,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:50:26,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:50:26,752 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:50:26,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:50:26,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:50:26,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:50:26,754 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:50:26,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:50:26,754 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:50:26,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:50:26,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:50:26,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:50:26,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:50:26,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:50:26,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:50:26,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:50:26,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:50:26,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:50:26,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:50:26,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:50:26,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:50:26,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:50:26,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:50:26,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:26,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:50:26,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:50:26,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:50:26,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:50:26,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:26,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:50:26,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:50:26,759 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:50:27,091 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:50:27,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:50:27,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:50:27,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:50:27,117 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:50:27,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-07-21 12:50:27,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd5020bb/4454bc1054ee45a082bd4ce15e73be86/FLAG7efb72eab [2020-07-21 12:50:27,724 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:50:27,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-07-21 12:50:27,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd5020bb/4454bc1054ee45a082bd4ce15e73be86/FLAG7efb72eab [2020-07-21 12:50:28,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bd5020bb/4454bc1054ee45a082bd4ce15e73be86 [2020-07-21 12:50:28,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:50:28,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:50:28,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:28,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:50:28,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:50:28,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500d7c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28, skipping insertion in model container [2020-07-21 12:50:28,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:50:28,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:50:28,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:28,476 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:50:28,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:28,739 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:50:28,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28 WrapperNode [2020-07-21 12:50:28,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:28,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:50:28,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:50:28,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:50:28,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... [2020-07-21 12:50:28,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:50:28,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:50:28,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:50:28,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:50:28,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-21 12:50:28,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:50:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:50:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:50:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:50:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:50:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:50:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:50:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:50:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:50:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:50:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:50:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:50:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:50:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:50:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:50:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:50:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 12:50:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:50:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:50:28,890 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:50:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:50:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:50:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:50:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:50:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 12:50:28,891 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:50:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:50:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:50:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:50:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:50:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:50:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:50:28,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:50:28,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:50:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:50:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:50:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:50:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:50:28,893 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:50:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:50:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:50:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:50:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:50:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:50:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:50:28,894 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:50:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:50:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:50:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:50:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:50:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:50:28,895 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:50:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:50:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:50:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:50:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:50:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:50:28,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:50:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:50:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:50:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:50:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:50:28,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:50:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:50:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:50:28,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:50:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:50:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:50:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:50:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:50:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:50:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:50:28,899 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 12:50:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:50:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:50:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:50:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 12:50:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:50:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:50:28,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:50:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:50:28,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:50:29,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:50:29,982 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:50:29,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:29 BoogieIcfgContainer [2020-07-21 12:50:29,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:50:29,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:50:29,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:50:29,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:50:29,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:50:28" (1/3) ... [2020-07-21 12:50:29,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644a4d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:29, skipping insertion in model container [2020-07-21 12:50:29,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:28" (2/3) ... [2020-07-21 12:50:29,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644a4d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:29, skipping insertion in model container [2020-07-21 12:50:29,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:29" (3/3) ... [2020-07-21 12:50:29,996 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-07-21 12:50:30,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:50:30,016 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:50:30,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:50:30,052 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:50:30,052 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:50:30,052 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:50:30,052 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:50:30,052 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:50:30,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:50:30,053 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:50:30,053 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:50:30,075 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-07-21 12:50:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:50:30,085 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:30,086 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] [2020-07-21 12:50:30,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:30,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times [2020-07-21 12:50:30,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:30,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773354522] [2020-07-21 12:50:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,496 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:30,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:30,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:50:30,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:30,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:30,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773354522] [2020-07-21 12:50:30,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:30,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:50:30,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721196238] [2020-07-21 12:50:30,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:50:30,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:30,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:50:30,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:30,565 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2020-07-21 12:50:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:30,615 INFO L93 Difference]: Finished difference Result 254 states and 315 transitions. [2020-07-21 12:50:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:50:30,619 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:50:30,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:30,632 INFO L225 Difference]: With dead ends: 254 [2020-07-21 12:50:30,632 INFO L226 Difference]: Without dead ends: 127 [2020-07-21 12:50:30,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-21 12:50:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-07-21 12:50:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-21 12:50:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2020-07-21 12:50:30,694 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46 [2020-07-21 12:50:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:30,695 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2020-07-21 12:50:30,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:50:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2020-07-21 12:50:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:50:30,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:30,700 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] [2020-07-21 12:50:30,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:30,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:30,915 INFO L82 PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times [2020-07-21 12:50:30,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:30,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095667409] [2020-07-21 12:50:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,226 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:31,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:31,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:50:31,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:31,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:31,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095667409] [2020-07-21 12:50:31,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:31,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:31,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943727656] [2020-07-21 12:50:31,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:31,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:31,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:31,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:31,285 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 3 states. [2020-07-21 12:50:31,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:31,330 INFO L93 Difference]: Finished difference Result 199 states and 233 transitions. [2020-07-21 12:50:31,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:31,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:50:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:31,334 INFO L225 Difference]: With dead ends: 199 [2020-07-21 12:50:31,335 INFO L226 Difference]: Without dead ends: 118 [2020-07-21 12:50:31,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-21 12:50:31,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-21 12:50:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-21 12:50:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-07-21 12:50:31,364 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-07-21 12:50:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:31,365 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-07-21 12:50:31,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-07-21 12:50:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 12:50:31,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:31,372 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] [2020-07-21 12:50:31,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:31,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times [2020-07-21 12:50:31,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:31,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833025156] [2020-07-21 12:50:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,872 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:31,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:31,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:50:31,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:31,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:31,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833025156] [2020-07-21 12:50:31,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:31,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:31,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269304147] [2020-07-21 12:50:31,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:31,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:31,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:31,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:31,922 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 3 states. [2020-07-21 12:50:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:31,951 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2020-07-21 12:50:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:31,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 12:50:31,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:31,956 INFO L225 Difference]: With dead ends: 212 [2020-07-21 12:50:31,956 INFO L226 Difference]: Without dead ends: 118 [2020-07-21 12:50:31,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-21 12:50:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-21 12:50:31,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-21 12:50:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-07-21 12:50:31,979 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52 [2020-07-21 12:50:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:31,980 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-07-21 12:50:31,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-07-21 12:50:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 12:50:31,988 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:31,988 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] [2020-07-21 12:50:32,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:32,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:32,203 INFO L82 PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times [2020-07-21 12:50:32,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:32,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207790150] [2020-07-21 12:50:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,516 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:32,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:32,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:50:32,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:32,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:32,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207790150] [2020-07-21 12:50:32,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:32,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:32,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690306956] [2020-07-21 12:50:32,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:32,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:32,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:32,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:32,583 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states. [2020-07-21 12:50:33,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:33,193 INFO L93 Difference]: Finished difference Result 293 states and 355 transitions. [2020-07-21 12:50:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:33,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-07-21 12:50:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:33,196 INFO L225 Difference]: With dead ends: 293 [2020-07-21 12:50:33,197 INFO L226 Difference]: Without dead ends: 199 [2020-07-21 12:50:33,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:50:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-07-21 12:50:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 183. [2020-07-21 12:50:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-21 12:50:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2020-07-21 12:50:33,220 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 65 [2020-07-21 12:50:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:33,220 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 206 transitions. [2020-07-21 12:50:33,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 206 transitions. [2020-07-21 12:50:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 12:50:33,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:33,222 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, 1, 1, 1, 1] [2020-07-21 12:50:33,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,436 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:33,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times [2020-07-21 12:50:33,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:33,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875395009] [2020-07-21 12:50:33,438 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:33,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:33,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:33,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:33,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:33,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875395009] [2020-07-21 12:50:33,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:33,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:33,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708392551] [2020-07-21 12:50:33,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:33,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:33,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:33,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:33,796 INFO L87 Difference]: Start difference. First operand 183 states and 206 transitions. Second operand 6 states. [2020-07-21 12:50:33,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:33,996 INFO L93 Difference]: Finished difference Result 190 states and 214 transitions. [2020-07-21 12:50:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:33,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 12:50:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:34,001 INFO L225 Difference]: With dead ends: 190 [2020-07-21 12:50:34,001 INFO L226 Difference]: Without dead ends: 187 [2020-07-21 12:50:34,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-21 12:50:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2020-07-21 12:50:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-21 12:50:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 205 transitions. [2020-07-21 12:50:34,029 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 205 transitions. Word has length 79 [2020-07-21 12:50:34,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:34,030 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 205 transitions. [2020-07-21 12:50:34,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:34,030 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 205 transitions. [2020-07-21 12:50:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-21 12:50:34,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:34,032 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, 1, 1, 1, 1, 1] [2020-07-21 12:50:34,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1354545370, now seen corresponding path program 1 times [2020-07-21 12:50:34,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:34,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459480374] [2020-07-21 12:50:34,249 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,507 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:34,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:34,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 12:50:34,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:34,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:34,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459480374] [2020-07-21 12:50:34,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:34,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:34,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139462832] [2020-07-21 12:50:34,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:34,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:34,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:34,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:34,562 INFO L87 Difference]: Start difference. First operand 183 states and 205 transitions. Second operand 6 states. [2020-07-21 12:50:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:34,807 INFO L93 Difference]: Finished difference Result 490 states and 570 transitions. [2020-07-21 12:50:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:34,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-07-21 12:50:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:34,813 INFO L225 Difference]: With dead ends: 490 [2020-07-21 12:50:34,813 INFO L226 Difference]: Without dead ends: 331 [2020-07-21 12:50:34,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-07-21 12:50:34,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2020-07-21 12:50:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-07-21 12:50:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 369 transitions. [2020-07-21 12:50:34,886 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 369 transitions. Word has length 80 [2020-07-21 12:50:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:34,887 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 369 transitions. [2020-07-21 12:50:34,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:34,887 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 369 transitions. [2020-07-21 12:50:34,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 12:50:34,889 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:34,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:35,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,091 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1066260182, now seen corresponding path program 1 times [2020-07-21 12:50:35,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:35,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102467794] [2020-07-21 12:50:35,093 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,402 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:35,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:35,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:35,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:35,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:35,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102467794] [2020-07-21 12:50:35,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:35,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:35,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6972862] [2020-07-21 12:50:35,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:35,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:35,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:35,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:35,440 INFO L87 Difference]: Start difference. First operand 327 states and 369 transitions. Second operand 6 states. [2020-07-21 12:50:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:35,497 INFO L93 Difference]: Finished difference Result 640 states and 732 transitions. [2020-07-21 12:50:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:50:35,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-21 12:50:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:35,503 INFO L225 Difference]: With dead ends: 640 [2020-07-21 12:50:35,505 INFO L226 Difference]: Without dead ends: 337 [2020-07-21 12:50:35,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:50:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-21 12:50:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-21 12:50:35,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-21 12:50:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 379 transitions. [2020-07-21 12:50:35,550 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 379 transitions. Word has length 84 [2020-07-21 12:50:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:35,551 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 379 transitions. [2020-07-21 12:50:35,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 379 transitions. [2020-07-21 12:50:35,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 12:50:35,559 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:35,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:35,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,760 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:35,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1088892436, now seen corresponding path program 1 times [2020-07-21 12:50:35,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:35,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829860950] [2020-07-21 12:50:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,006 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:36,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:36,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:50:36,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:36,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:36,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829860950] [2020-07-21 12:50:36,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:36,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:50:36,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118393999] [2020-07-21 12:50:36,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:50:36,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:36,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:50:36,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:36,042 INFO L87 Difference]: Start difference. First operand 337 states and 379 transitions. Second operand 5 states. [2020-07-21 12:50:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:36,071 INFO L93 Difference]: Finished difference Result 664 states and 764 transitions. [2020-07-21 12:50:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:50:36,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-07-21 12:50:36,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:36,075 INFO L225 Difference]: With dead ends: 664 [2020-07-21 12:50:36,075 INFO L226 Difference]: Without dead ends: 351 [2020-07-21 12:50:36,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:36,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-07-21 12:50:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 345. [2020-07-21 12:50:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-07-21 12:50:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 387 transitions. [2020-07-21 12:50:36,097 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 387 transitions. Word has length 84 [2020-07-21 12:50:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:36,098 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 387 transitions. [2020-07-21 12:50:36,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:50:36,098 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 387 transitions. [2020-07-21 12:50:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 12:50:36,100 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:36,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:36,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,314 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:36,314 INFO L82 PathProgramCache]: Analyzing trace with hash 2114384435, now seen corresponding path program 1 times [2020-07-21 12:50:36,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:36,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083639911] [2020-07-21 12:50:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,550 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:36,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:36,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:50:36,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:36,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:36,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:36,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083639911] [2020-07-21 12:50:36,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:36,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:36,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216413899] [2020-07-21 12:50:36,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:36,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:36,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:36,581 INFO L87 Difference]: Start difference. First operand 345 states and 387 transitions. Second operand 3 states. [2020-07-21 12:50:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:36,626 INFO L93 Difference]: Finished difference Result 931 states and 1093 transitions. [2020-07-21 12:50:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:36,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-07-21 12:50:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:36,631 INFO L225 Difference]: With dead ends: 931 [2020-07-21 12:50:36,631 INFO L226 Difference]: Without dead ends: 610 [2020-07-21 12:50:36,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:36,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-07-21 12:50:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 607. [2020-07-21 12:50:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-07-21 12:50:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 700 transitions. [2020-07-21 12:50:36,670 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 700 transitions. Word has length 84 [2020-07-21 12:50:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:36,671 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 700 transitions. [2020-07-21 12:50:36,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 700 transitions. [2020-07-21 12:50:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-21 12:50:36,673 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:36,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:36,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,888 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:36,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times [2020-07-21 12:50:36,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:36,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005548866] [2020-07-21 12:50:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:37,218 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:37,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:50:37,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:50:37,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:37,547 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:50:37,547 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:50:37,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:37,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:50:37 BoogieIcfgContainer [2020-07-21 12:50:37,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:50:37,943 INFO L168 Benchmark]: Toolchain (without parser) took 9910.94 ms. Allocated memory was 137.4 MB in the beginning and 315.6 MB in the end (delta: 178.3 MB). Free memory was 101.6 MB in the beginning and 277.3 MB in the end (delta: -175.7 MB). Peak memory consumption was 191.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,944 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.89 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 101.4 MB in the beginning and 173.7 MB in the end (delta: -72.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,946 INFO L168 Benchmark]: Boogie Preprocessor took 83.72 ms. Allocated memory is still 203.9 MB. Free memory was 173.7 MB in the beginning and 169.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,946 INFO L168 Benchmark]: RCFGBuilder took 1163.74 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 169.4 MB in the beginning and 200.3 MB in the end (delta: -30.9 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,947 INFO L168 Benchmark]: TraceAbstraction took 7951.32 ms. Allocated memory was 235.4 MB in the beginning and 315.6 MB in the end (delta: 80.2 MB). Free memory was 200.3 MB in the beginning and 277.3 MB in the end (delta: -76.9 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:37,951 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.89 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 101.4 MB in the beginning and 173.7 MB in the end (delta: -72.3 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.72 ms. Allocated memory is still 203.9 MB. Free memory was 173.7 MB in the beginning and 169.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1163.74 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 169.4 MB in the beginning and 200.3 MB in the end (delta: -30.9 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7951.32 ms. Allocated memory was 235.4 MB in the beginning and 315.6 MB in the end (delta: 80.2 MB). Free memory was 200.3 MB in the beginning and 277.3 MB in the end (delta: -76.9 MB). Peak memory consumption was 192.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=95, \old(head)=55, \old(head)=83, \old(methaneLevelCritical)=88, \old(pumpRunning)=23, \old(systemActive)=93, \old(waterLevel)=36, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L126] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L127] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L128] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L132] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L133] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L112] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L776] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L778] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L788] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L788] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L798] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L798] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND FALSE !(\read(tmp___2)) [L812] tmp___1 = __VERIFIER_nondet_int() [L814] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L821] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L587] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L594] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L596] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L642] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L645] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L660] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L616] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L619] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L923] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L745] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L621] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L625] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L670] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L625] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L660] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L596] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L602] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L183] int tmp ; [L184] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L188] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L188] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L192] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L192] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L196] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L837] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1326 SDtfs, 549 SDslu, 2255 SDs, 0 SdLazy, 505 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 619 GetRequests, 590 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=607occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 33 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 709 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 76998 SizeOfPredicates, 20 NumberOfNonLiveVariables, 6298 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...