/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:58:42,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:58:42,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:58:42,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:58:42,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:58:42,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:58:42,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:58:42,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:58:42,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:58:42,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:58:42,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:58:42,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:58:42,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:58:42,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:58:42,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:58:42,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:58:42,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:58:42,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:58:42,673 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:58:42,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:58:42,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:58:42,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:58:42,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:58:42,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:58:42,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:58:42,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:58:42,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:58:42,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:58:42,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:58:42,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:58:42,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:58:42,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:58:42,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:58:42,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:58:42,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:58:42,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:58:42,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:58:42,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:58:42,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:58:42,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:58:42,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:58:42,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 11:58:42,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:58:42,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:58:42,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:58:42,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:58:42,752 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:58:42,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:58:42,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:58:42,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:58:42,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:58:42,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:58:42,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:58:42,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:58:42,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:58:42,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:58:42,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:58:42,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:58:42,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:58:42,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:58:42,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:58:42,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:58:42,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:58:42,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:58:42,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:58:42,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:58:42,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:58:42,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:58:42,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:58:42,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:58:42,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:58:42,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:58:43,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:58:43,070 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:58:43,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:58:43,077 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:58:43,077 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:58:43,078 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-18 11:58:43,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9576fbf9/f66c7296df9749a79dd9528d053b93b6/FLAG07269ccb0 [2020-08-18 11:58:43,684 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:58:43,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product36.cil.c [2020-08-18 11:58:43,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9576fbf9/f66c7296df9749a79dd9528d053b93b6/FLAG07269ccb0 [2020-08-18 11:58:44,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f9576fbf9/f66c7296df9749a79dd9528d053b93b6 [2020-08-18 11:58:44,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:58:44,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:58:44,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:58:44,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:58:44,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:58:44,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b9c226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44, skipping insertion in model container [2020-08-18 11:58:44,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:58:44,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:58:44,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:58:44,626 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:58:44,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:58:44,750 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:58:44,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44 WrapperNode [2020-08-18 11:58:44,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:58:44,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:58:44,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:58:44,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:58:44,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... [2020-08-18 11:58:44,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:58:44,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:58:44,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:58:44,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:58:44,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:58:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:58:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:58:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:58:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:58:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:58:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:58:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:58:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:58:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:58:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:58:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:58:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:58:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:58:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:58:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:58:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:58:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:58:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:58:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:58:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 11:58:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:58:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:58:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:58:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:58:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:58:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:58:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:58:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:58:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:58:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:58:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:58:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:58:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:58:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:58:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:58:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:58:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:58:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:58:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:58:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:58:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:58:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:58:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:58:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:58:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:58:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:58:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:58:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:58:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:58:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:58:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:58:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:58:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:58:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:58:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:58:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:58:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:58:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:58:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:58:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:58:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:58:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:58:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 11:58:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:58:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:58:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:58:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:58:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:58:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:58:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:58:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:58:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:58:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:58:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:58:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:58:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:58:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:58:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:58:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:58:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:58:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:58:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:58:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:58:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:58:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:58:45,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:58:45,978 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:58:45,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:58:45 BoogieIcfgContainer [2020-08-18 11:58:45,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:58:45,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:58:45,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:58:45,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:58:45,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:58:44" (1/3) ... [2020-08-18 11:58:45,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb07a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:58:45, skipping insertion in model container [2020-08-18 11:58:45,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:44" (2/3) ... [2020-08-18 11:58:45,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb07a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:58:45, skipping insertion in model container [2020-08-18 11:58:45,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:58:45" (3/3) ... [2020-08-18 11:58:45,992 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2020-08-18 11:58:46,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:58:46,012 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:58:46,027 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:58:46,053 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:58:46,053 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:58:46,053 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:58:46,053 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:58:46,053 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:58:46,053 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:58:46,054 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:58:46,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:58:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 11:58:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:58:46,086 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:46,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:46,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:46,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:46,093 INFO L82 PathProgramCache]: Analyzing trace with hash -16432852, now seen corresponding path program 1 times [2020-08-18 11:58:46,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:46,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217140216] [2020-08-18 11:58:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,742 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:58:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:58:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:58:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:46,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217140216] [2020-08-18 11:58:46,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:46,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:58:46,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73881282] [2020-08-18 11:58:46,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:58:46,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:46,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:58:46,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:58:46,896 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 11:58:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:47,991 INFO L93 Difference]: Finished difference Result 290 states and 378 transitions. [2020-08-18 11:58:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:58:47,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 11:58:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:48,008 INFO L225 Difference]: With dead ends: 290 [2020-08-18 11:58:48,008 INFO L226 Difference]: Without dead ends: 157 [2020-08-18 11:58:48,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:58:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-18 11:58:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 124. [2020-08-18 11:58:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 11:58:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-18 11:58:48,147 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2020-08-18 11:58:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:48,148 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-18 11:58:48,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:58:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-18 11:58:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 11:58:48,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:48,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:48,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:58:48,160 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash -687450637, now seen corresponding path program 1 times [2020-08-18 11:58:48,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:48,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367271314] [2020-08-18 11:58:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,506 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:58:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:58:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:58:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:48,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367271314] [2020-08-18 11:58:48,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:48,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:58:48,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255097388] [2020-08-18 11:58:48,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:58:48,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:48,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:58:48,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:58:48,554 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 4 states. [2020-08-18 11:58:48,964 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:49,733 INFO L93 Difference]: Finished difference Result 210 states and 255 transitions. [2020-08-18 11:58:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:58:49,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 11:58:49,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:49,738 INFO L225 Difference]: With dead ends: 210 [2020-08-18 11:58:49,738 INFO L226 Difference]: Without dead ends: 141 [2020-08-18 11:58:49,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:58:49,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-18 11:58:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-08-18 11:58:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-18 11:58:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2020-08-18 11:58:49,777 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 53 [2020-08-18 11:58:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:49,778 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2020-08-18 11:58:49,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:58:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2020-08-18 11:58:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 11:58:49,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:49,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:49,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:58:49,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:49,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:49,781 INFO L82 PathProgramCache]: Analyzing trace with hash 585649573, now seen corresponding path program 1 times [2020-08-18 11:58:49,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:49,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146379920] [2020-08-18 11:58:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,137 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:58:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:58:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:58:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:50,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146379920] [2020-08-18 11:58:50,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:50,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:50,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996361787] [2020-08-18 11:58:50,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:50,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:50,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:50,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:50,222 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 8 states. [2020-08-18 11:58:50,561 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:50,848 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:51,178 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:51,408 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:52,179 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:53,819 INFO L93 Difference]: Finished difference Result 402 states and 494 transitions. [2020-08-18 11:58:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:58:53,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 11:58:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:53,830 INFO L225 Difference]: With dead ends: 402 [2020-08-18 11:58:53,831 INFO L226 Difference]: Without dead ends: 311 [2020-08-18 11:58:53,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:58:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-18 11:58:53,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 238. [2020-08-18 11:58:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 11:58:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 283 transitions. [2020-08-18 11:58:53,894 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 283 transitions. Word has length 58 [2020-08-18 11:58:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:53,894 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 283 transitions. [2020-08-18 11:58:53,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 283 transitions. [2020-08-18 11:58:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 11:58:53,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:53,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:53,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:58:53,897 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash -107584034, now seen corresponding path program 1 times [2020-08-18 11:58:53,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:53,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001319355] [2020-08-18 11:58:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,229 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:54,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:58:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:58:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:58:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 11:58:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:54,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001319355] [2020-08-18 11:58:54,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:54,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:54,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557086447] [2020-08-18 11:58:54,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:54,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:54,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:54,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:54,326 INFO L87 Difference]: Start difference. First operand 238 states and 283 transitions. Second operand 8 states. [2020-08-18 11:58:54,739 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:56,056 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:56,356 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:56,618 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:56,874 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:57,544 INFO L93 Difference]: Finished difference Result 729 states and 953 transitions. [2020-08-18 11:58:57,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:58:57,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 11:58:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:57,551 INFO L225 Difference]: With dead ends: 729 [2020-08-18 11:58:57,551 INFO L226 Difference]: Without dead ends: 515 [2020-08-18 11:58:57,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:58:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-08-18 11:58:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 449. [2020-08-18 11:58:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-18 11:58:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 545 transitions. [2020-08-18 11:58:57,657 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 545 transitions. Word has length 63 [2020-08-18 11:58:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:57,657 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 545 transitions. [2020-08-18 11:58:57,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 545 transitions. [2020-08-18 11:58:57,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 11:58:57,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:57,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:58:57,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:58:57,661 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:57,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:57,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1291077628, now seen corresponding path program 1 times [2020-08-18 11:58:57,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:57,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112703011] [2020-08-18 11:58:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,930 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:57,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:58:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:58:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:58,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:58:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 11:58:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 11:58:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:58,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112703011] [2020-08-18 11:58:58,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:58,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:58:58,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625337949] [2020-08-18 11:58:58,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:58:58,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:58,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:58:58,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:58:58,019 INFO L87 Difference]: Start difference. First operand 449 states and 545 transitions. Second operand 6 states. [2020-08-18 11:58:58,334 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:59,977 INFO L93 Difference]: Finished difference Result 1117 states and 1430 transitions. [2020-08-18 11:58:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:58:59,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 11:58:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:59,984 INFO L225 Difference]: With dead ends: 1117 [2020-08-18 11:58:59,984 INFO L226 Difference]: Without dead ends: 692 [2020-08-18 11:58:59,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:58:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-08-18 11:59:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 639. [2020-08-18 11:59:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-08-18 11:59:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 776 transitions. [2020-08-18 11:59:00,141 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 776 transitions. Word has length 67 [2020-08-18 11:59:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:59:00,141 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 776 transitions. [2020-08-18 11:59:00,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:59:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 776 transitions. [2020-08-18 11:59:00,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 11:59:00,143 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:59:00,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:59:00,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:59:00,144 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:59:00,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:59:00,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1290048412, now seen corresponding path program 1 times [2020-08-18 11:59:00,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:59:00,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941740809] [2020-08-18 11:59:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:59:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:59:00,199 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:59:00,200 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:59:00,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:59:00,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:59:00 BoogieIcfgContainer [2020-08-18 11:59:00,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:59:00,228 INFO L168 Benchmark]: Toolchain (without parser) took 16111.46 ms. Allocated memory was 141.6 MB in the beginning and 514.9 MB in the end (delta: 373.3 MB). Free memory was 102.4 MB in the beginning and 418.5 MB in the end (delta: -316.1 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:00,229 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 11:59:00,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.70 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 173.7 MB in the end (delta: -71.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:00,230 INFO L168 Benchmark]: Boogie Preprocessor took 99.86 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:00,231 INFO L168 Benchmark]: RCFGBuilder took 1131.68 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 169.8 MB in the beginning and 193.4 MB in the end (delta: -23.6 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:00,232 INFO L168 Benchmark]: TraceAbstraction took 14241.36 ms. Allocated memory was 234.9 MB in the beginning and 514.9 MB in the end (delta: 280.0 MB). Free memory was 193.4 MB in the beginning and 418.5 MB in the end (delta: -225.1 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:59:00,236 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.70 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 173.7 MB in the end (delta: -71.4 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.86 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1131.68 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 169.8 MB in the beginning and 193.4 MB in the end (delta: -23.6 MB). Peak memory consumption was 81.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14241.36 ms. Allocated memory was 234.9 MB in the beginning and 514.9 MB in the end (delta: 280.0 MB). Free memory was 193.4 MB in the beginning and 418.5 MB in the end (delta: -225.1 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L426] int pumpRunning = 0; [L427] int systemActive = 1; [L675] int waterLevel = 1; [L676] int methaneLevelCritical = 0; [L769] int cleanupTimeShifts = 4; [L845] int retValue_acc ; [L846] int tmp ; [L850] FCALL select_helpers() [L851] FCALL select_features() [L852] CALL, EXPR valid_product() [L894] int retValue_acc ; [L897] retValue_acc = 1 [L898] return (retValue_acc); [L852] RET, EXPR valid_product() [L852] tmp = valid_product() [L854] COND TRUE \read(tmp) [L856] FCALL setup() [L857] CALL runTest() [L836] CALL test() [L606] int splverifierCounter ; [L607] int tmp ; [L608] int tmp___0 ; [L609] int tmp___1 ; [L610] int tmp___2 ; [L613] splverifierCounter = 0 [L615] COND TRUE 1 [L617] COND TRUE splverifierCounter < 4 [L623] tmp = __VERIFIER_nondet_int() [L625] COND TRUE \read(tmp) [L627] CALL waterRise() [L693] COND TRUE waterLevel < 2 [L694] waterLevel = waterLevel + 1 [L627] RET waterRise() [L633] tmp___0 = __VERIFIER_nondet_int() [L635] COND FALSE !(\read(tmp___0)) [L643] tmp___2 = __VERIFIER_nondet_int() [L645] COND FALSE !(\read(tmp___2)) [L651] tmp___1 = __VERIFIER_nondet_int() [L653] COND TRUE \read(tmp___1) [L655] CALL stopSystem() [L582] COND FALSE !(\read(pumpRunning)) [L589] systemActive = 0 [L655] RET stopSystem() [L662] CALL timeShift() [L434] COND FALSE !(\read(pumpRunning)) [L441] COND FALSE !(\read(systemActive)) [L449] CALL __utac_acc__Specification3_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L906] int tmp___1 ; [L910] CALL, EXPR isMethaneLevelCritical() [L714] int retValue_acc ; [L717] retValue_acc = methaneLevelCritical [L718] return (retValue_acc); [L910] RET, EXPR isMethaneLevelCritical() [L910] tmp = isMethaneLevelCritical() [L912] COND FALSE !(\read(tmp)) [L916] CALL, EXPR getWaterLevel() [L746] int retValue_acc ; [L749] retValue_acc = waterLevel [L750] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp___0 = getWaterLevel() [L918] COND TRUE tmp___0 == 2 [L920] CALL, EXPR isPumpRunning() [L515] int retValue_acc ; [L518] retValue_acc = pumpRunning [L519] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___1 = isPumpRunning() [L922] COND FALSE !(\read(tmp___1)) [L926] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 576 SDtfs, 948 SDslu, 419 SDs, 0 SdLazy, 2132 SolverSat, 619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 251 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...