/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:47:21,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:47:21,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:47:21,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:47:21,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:47:21,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:47:21,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:47:21,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:47:21,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:47:21,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:47:21,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:47:21,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:47:21,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:47:21,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:47:21,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:47:21,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:47:21,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:47:21,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:47:21,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:47:21,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:47:21,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:47:21,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:47:21,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:47:21,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:47:21,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:47:21,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:47:21,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:47:21,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:47:21,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:47:21,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:47:21,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:47:21,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:47:21,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:47:21,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:47:21,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:47:21,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:47:21,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:47:21,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:47:21,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:47:21,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:47:21,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:47:21,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:47:21,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:47:21,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:47:21,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:47:21,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:47:21,810 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:47:21,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:47:21,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:47:21,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:47:21,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:47:21,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:47:21,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:47:21,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:47:21,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:47:21,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:47:21,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:47:21,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:47:21,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:47:21,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:47:21,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:47:21,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:47:21,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:47:21,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:47:21,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:47:21,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:47:21,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:47:21,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:47:21,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:47:21,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:47:21,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:47:21,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:47:22,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:47:22,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:47:22,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:47:22,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:47:22,171 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:47:22,172 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-08-21 22:47:22,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e8f63a4/36b1cfd610ca43229efa28f18094faff/FLAGf0d7d9f24 [2020-08-21 22:47:22,798 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:47:22,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-08-21 22:47:22,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e8f63a4/36b1cfd610ca43229efa28f18094faff/FLAGf0d7d9f24 [2020-08-21 22:47:23,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e8f63a4/36b1cfd610ca43229efa28f18094faff [2020-08-21 22:47:23,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:47:23,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:47:23,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:47:23,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:47:23,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:47:23,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726a206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23, skipping insertion in model container [2020-08-21 22:47:23,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:47:23,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:47:23,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:47:23,653 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:47:23,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:47:23,769 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:47:23,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23 WrapperNode [2020-08-21 22:47:23,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:47:23,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:47:23,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:47:23,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:47:23,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... [2020-08-21 22:47:23,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:47:23,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:47:23,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:47:23,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:47:23,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:47:23,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:47:23,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:47:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:47:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:47:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:47:23,974 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:47:23,975 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:47:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:47:23,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:47:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:47:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:47:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:47:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:47:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:47:23,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:47:23,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:47:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:47:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:47:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:47:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:47:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:47:23,979 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:47:23,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:47:23,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:47:23,980 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:47:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 22:47:23,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 22:47:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:47:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:47:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:47:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:47:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:47:23,982 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:47:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:47:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:47:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:47:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:47:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:47:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:47:23,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:47:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:47:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:47:23,984 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:47:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:47:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:47:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:47:23,985 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:47:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:47:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:47:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:47:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:47:23,986 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:47:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:47:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:47:23,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:47:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:47:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:47:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:47:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:47:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:47:23,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:47:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:47:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:47:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:47:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:47:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:47:23,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:47:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:47:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:47:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:47:23,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:47:23,991 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:47:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 22:47:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:47:23,992 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:47:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:47:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:47:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:47:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:47:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:47:23,994 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:47:23,995 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:47:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 22:47:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:47:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:47:23,996 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:47:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:47:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:47:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:47:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:47:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:47:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:47:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:47:23,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:47:25,138 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:47:25,138 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:47:25,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:47:25 BoogieIcfgContainer [2020-08-21 22:47:25,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:47:25,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:47:25,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:47:25,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:47:25,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:47:23" (1/3) ... [2020-08-21 22:47:25,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d7ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:47:25, skipping insertion in model container [2020-08-21 22:47:25,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:23" (2/3) ... [2020-08-21 22:47:25,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29d7ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:47:25, skipping insertion in model container [2020-08-21 22:47:25,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:47:25" (3/3) ... [2020-08-21 22:47:25,152 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2020-08-21 22:47:25,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:47:25,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:47:25,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:47:25,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:47:25,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:47:25,214 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:47:25,214 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:47:25,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:47:25,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:47:25,215 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:47:25,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:47:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-21 22:47:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 22:47:25,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:25,249 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] [2020-08-21 22:47:25,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:25,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1550952004, now seen corresponding path program 1 times [2020-08-21 22:47:25,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:25,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48388982] [2020-08-21 22:47:25,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:25,971 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:47:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:47:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:47:26,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48388982] [2020-08-21 22:47:26,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:26,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:47:26,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769364670] [2020-08-21 22:47:26,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:47:26,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:26,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:47:26,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:47:26,104 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-08-21 22:47:27,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:27,288 INFO L93 Difference]: Finished difference Result 295 states and 383 transitions. [2020-08-21 22:47:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:47:27,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 22:47:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:27,305 INFO L225 Difference]: With dead ends: 295 [2020-08-21 22:47:27,305 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 22:47:27,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:47:27,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 22:47:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-21 22:47:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 22:47:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-08-21 22:47:27,409 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 51 [2020-08-21 22:47:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:27,409 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-08-21 22:47:27,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:47:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-08-21 22:47:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:47:27,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:27,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:47:27,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:47:27,414 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:27,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:27,415 INFO L82 PathProgramCache]: Analyzing trace with hash -185895496, now seen corresponding path program 1 times [2020-08-21 22:47:27,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:27,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894844803] [2020-08-21 22:47:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,746 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:27,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:47:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:47:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:47:27,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894844803] [2020-08-21 22:47:27,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:27,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:47:27,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229788316] [2020-08-21 22:47:27,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:47:27,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:27,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:47:27,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:47:27,806 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 5 states. [2020-08-21 22:47:28,308 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:29,116 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2020-08-21 22:47:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:47:29,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 22:47:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:29,121 INFO L225 Difference]: With dead ends: 231 [2020-08-21 22:47:29,121 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 22:47:29,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:47:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 22:47:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 122. [2020-08-21 22:47:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-21 22:47:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2020-08-21 22:47:29,162 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 52 [2020-08-21 22:47:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:29,162 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2020-08-21 22:47:29,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:47:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2020-08-21 22:47:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 22:47:29,164 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:29,165 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] [2020-08-21 22:47:29,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:47:29,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:29,165 INFO L82 PathProgramCache]: Analyzing trace with hash 794087253, now seen corresponding path program 1 times [2020-08-21 22:47:29,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:29,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027868265] [2020-08-21 22:47:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,509 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:47:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:47:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:47:29,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027868265] [2020-08-21 22:47:29,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:29,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:47:29,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87008375] [2020-08-21 22:47:29,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:47:29,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:29,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:47:29,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:47:29,654 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 9 states. [2020-08-21 22:47:30,053 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:30,395 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:30,636 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:30,872 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:31,665 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:33,382 INFO L93 Difference]: Finished difference Result 414 states and 517 transitions. [2020-08-21 22:47:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:47:33,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 22:47:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:33,388 INFO L225 Difference]: With dead ends: 414 [2020-08-21 22:47:33,389 INFO L226 Difference]: Without dead ends: 320 [2020-08-21 22:47:33,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:47:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-08-21 22:47:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 247. [2020-08-21 22:47:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-21 22:47:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 296 transitions. [2020-08-21 22:47:33,465 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 296 transitions. Word has length 56 [2020-08-21 22:47:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:33,466 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 296 transitions. [2020-08-21 22:47:33,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:47:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 296 transitions. [2020-08-21 22:47:33,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 22:47:33,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:33,468 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] [2020-08-21 22:47:33,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:47:33,469 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:33,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2145966964, now seen corresponding path program 1 times [2020-08-21 22:47:33,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:33,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074067603] [2020-08-21 22:47:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,810 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:33,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:47:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:47:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:47:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:47:33,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074067603] [2020-08-21 22:47:33,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:33,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:47:33,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441961600] [2020-08-21 22:47:33,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:47:33,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:33,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:47:33,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:47:33,914 INFO L87 Difference]: Start difference. First operand 247 states and 296 transitions. Second operand 9 states. [2020-08-21 22:47:34,262 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:35,371 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:35,683 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:35,925 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:36,165 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:37,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:37,249 INFO L93 Difference]: Finished difference Result 791 states and 1035 transitions. [2020-08-21 22:47:37,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 22:47:37,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-21 22:47:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:37,256 INFO L225 Difference]: With dead ends: 791 [2020-08-21 22:47:37,256 INFO L226 Difference]: Without dead ends: 572 [2020-08-21 22:47:37,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 22:47:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-08-21 22:47:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 442. [2020-08-21 22:47:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-21 22:47:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 532 transitions. [2020-08-21 22:47:37,371 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 532 transitions. Word has length 62 [2020-08-21 22:47:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:37,371 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 532 transitions. [2020-08-21 22:47:37,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:47:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 532 transitions. [2020-08-21 22:47:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 22:47:37,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:37,374 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] [2020-08-21 22:47:37,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:47:37,375 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash -664368024, now seen corresponding path program 1 times [2020-08-21 22:47:37,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:37,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178196702] [2020-08-21 22:47:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,661 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:47:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:47:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 22:47:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 22:47:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:47:37,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178196702] [2020-08-21 22:47:37,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:37,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:47:37,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647555499] [2020-08-21 22:47:37,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:47:37,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:37,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:47:37,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:47:37,822 INFO L87 Difference]: Start difference. First operand 442 states and 532 transitions. Second operand 10 states. [2020-08-21 22:47:38,223 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:39,198 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:39,506 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:39,754 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:40,396 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:41,438 INFO L93 Difference]: Finished difference Result 1232 states and 1648 transitions. [2020-08-21 22:47:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 22:47:41,439 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-21 22:47:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:41,458 INFO L225 Difference]: With dead ends: 1232 [2020-08-21 22:47:41,458 INFO L226 Difference]: Without dead ends: 818 [2020-08-21 22:47:41,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:47:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-08-21 22:47:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 633. [2020-08-21 22:47:41,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-08-21 22:47:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 763 transitions. [2020-08-21 22:47:41,642 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 763 transitions. Word has length 66 [2020-08-21 22:47:41,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:41,644 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 763 transitions. [2020-08-21 22:47:41,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:47:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 763 transitions. [2020-08-21 22:47:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:47:41,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:41,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:47:41,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:47:41,649 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:41,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1705973146, now seen corresponding path program 1 times [2020-08-21 22:47:41,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:41,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319411808] [2020-08-21 22:47:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:41,985 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:47:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:47:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:47:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:47:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:47:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:47:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:47:42,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319411808] [2020-08-21 22:47:42,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:42,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:47:42,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561134640] [2020-08-21 22:47:42,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:47:42,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:42,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:47:42,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:47:42,143 INFO L87 Difference]: Start difference. First operand 633 states and 763 transitions. Second operand 10 states. [2020-08-21 22:47:42,640 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:43,562 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:43,825 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 22:47:44,098 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:44,372 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:46,497 INFO L93 Difference]: Finished difference Result 2244 states and 3169 transitions. [2020-08-21 22:47:46,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 22:47:46,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-21 22:47:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:46,509 INFO L225 Difference]: With dead ends: 2244 [2020-08-21 22:47:46,509 INFO L226 Difference]: Without dead ends: 1639 [2020-08-21 22:47:46,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-21 22:47:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-08-21 22:47:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1215. [2020-08-21 22:47:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-08-21 22:47:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1468 transitions. [2020-08-21 22:47:46,757 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1468 transitions. Word has length 98 [2020-08-21 22:47:46,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:46,758 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1468 transitions. [2020-08-21 22:47:46,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:47:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1468 transitions. [2020-08-21 22:47:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:47:46,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:46,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:47:46,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:47:46,763 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1619413127, now seen corresponding path program 1 times [2020-08-21 22:47:46,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:46,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356207396] [2020-08-21 22:47:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,064 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:47,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:47:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:47:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:47:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:47:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:47:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:47:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:47:47,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356207396] [2020-08-21 22:47:47,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:47,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:47:47,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843474459] [2020-08-21 22:47:47,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:47:47,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:47,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:47:47,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:47:47,237 INFO L87 Difference]: Start difference. First operand 1215 states and 1468 transitions. Second operand 10 states. [2020-08-21 22:47:48,335 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:48,638 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:47:48,917 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:49,167 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:50,411 INFO L93 Difference]: Finished difference Result 2855 states and 3863 transitions. [2020-08-21 22:47:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:47:50,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-08-21 22:47:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:50,425 INFO L225 Difference]: With dead ends: 2855 [2020-08-21 22:47:50,425 INFO L226 Difference]: Without dead ends: 1668 [2020-08-21 22:47:50,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:47:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-21 22:47:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1255. [2020-08-21 22:47:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-08-21 22:47:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1508 transitions. [2020-08-21 22:47:50,667 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1508 transitions. Word has length 98 [2020-08-21 22:47:50,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:50,668 INFO L479 AbstractCegarLoop]: Abstraction has 1255 states and 1508 transitions. [2020-08-21 22:47:50,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:47:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1508 transitions. [2020-08-21 22:47:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:47:50,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:50,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:47:50,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:47:50,673 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash -429974715, now seen corresponding path program 1 times [2020-08-21 22:47:50,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:50,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340138232] [2020-08-21 22:47:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:50,943 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:50,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:50,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:50,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:47:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:47:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:47:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:47:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:47:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:47:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:47:51,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340138232] [2020-08-21 22:47:51,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:51,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:47:51,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222930500] [2020-08-21 22:47:51,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:47:51,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:51,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:47:51,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:47:51,122 INFO L87 Difference]: Start difference. First operand 1255 states and 1508 transitions. Second operand 12 states. [2020-08-21 22:47:51,697 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:51,932 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:52,168 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:52,915 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:53,188 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:53,440 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:54,726 INFO L93 Difference]: Finished difference Result 2487 states and 3257 transitions. [2020-08-21 22:47:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:47:54,726 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-08-21 22:47:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:54,735 INFO L225 Difference]: With dead ends: 2487 [2020-08-21 22:47:54,735 INFO L226 Difference]: Without dead ends: 1260 [2020-08-21 22:47:54,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 22:47:54,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-08-21 22:47:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 983. [2020-08-21 22:47:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-21 22:47:54,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1152 transitions. [2020-08-21 22:47:54,926 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1152 transitions. Word has length 98 [2020-08-21 22:47:54,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:54,926 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1152 transitions. [2020-08-21 22:47:54,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:47:54,926 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1152 transitions. [2020-08-21 22:47:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 22:47:54,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:54,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:47:54,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:47:54,931 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:54,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1139994370, now seen corresponding path program 1 times [2020-08-21 22:47:54,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:54,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622744641] [2020-08-21 22:47:54,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,273 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:47:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:47:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:47:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:47:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:47:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:47:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 22:47:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 22:47:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:47:55,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622744641] [2020-08-21 22:47:55,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:47:55,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-21 22:47:55,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517659268] [2020-08-21 22:47:55,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 22:47:55,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 22:47:55,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:47:55,636 INFO L87 Difference]: Start difference. First operand 983 states and 1152 transitions. Second operand 18 states. [2020-08-21 22:47:56,230 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:56,570 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 22:47:56,856 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:47:57,111 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:47:57,815 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:58,414 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:58,795 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:59,853 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:00,125 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:00,554 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:00,814 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:01,351 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 22:48:01,901 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-21 22:48:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:03,159 INFO L93 Difference]: Finished difference Result 2215 states and 2783 transitions. [2020-08-21 22:48:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-21 22:48:03,160 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-08-21 22:48:03,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:03,168 INFO L225 Difference]: With dead ends: 2215 [2020-08-21 22:48:03,168 INFO L226 Difference]: Without dead ends: 1260 [2020-08-21 22:48:03,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=506, Invalid=2044, Unknown=0, NotChecked=0, Total=2550 [2020-08-21 22:48:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-08-21 22:48:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 989. [2020-08-21 22:48:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-08-21 22:48:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1147 transitions. [2020-08-21 22:48:03,387 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1147 transitions. Word has length 102 [2020-08-21 22:48:03,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:03,389 INFO L479 AbstractCegarLoop]: Abstraction has 989 states and 1147 transitions. [2020-08-21 22:48:03,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 22:48:03,389 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1147 transitions. [2020-08-21 22:48:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-08-21 22:48:03,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:03,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:48:03,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:48:03,395 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:03,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash -194664218, now seen corresponding path program 1 times [2020-08-21 22:48:03,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:03,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819380898] [2020-08-21 22:48:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,714 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:48:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:48:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:48:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 22:48:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 22:48:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-21 22:48:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 22:48:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 22:48:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 22:48:03,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819380898] [2020-08-21 22:48:03,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:48:03,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 22:48:03,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463981860] [2020-08-21 22:48:03,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:48:03,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:03,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:48:03,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:48:03,893 INFO L87 Difference]: Start difference. First operand 989 states and 1147 transitions. Second operand 9 states. [2020-08-21 22:48:04,497 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:06,964 INFO L93 Difference]: Finished difference Result 1895 states and 2428 transitions. [2020-08-21 22:48:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 22:48:06,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-08-21 22:48:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:06,976 INFO L225 Difference]: With dead ends: 1895 [2020-08-21 22:48:06,976 INFO L226 Difference]: Without dead ends: 1892 [2020-08-21 22:48:06,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-08-21 22:48:06,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2020-08-21 22:48:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1482. [2020-08-21 22:48:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-21 22:48:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1712 transitions. [2020-08-21 22:48:07,247 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1712 transitions. Word has length 137 [2020-08-21 22:48:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:07,248 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1712 transitions. [2020-08-21 22:48:07,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:48:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1712 transitions. [2020-08-21 22:48:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-08-21 22:48:07,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:07,254 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:48:07,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:48:07,255 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:07,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:07,255 INFO L82 PathProgramCache]: Analyzing trace with hash -155772784, now seen corresponding path program 1 times [2020-08-21 22:48:07,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:07,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053077629] [2020-08-21 22:48:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:48:07,338 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:48:07,338 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:48:07,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:48:07,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:48:07 BoogieIcfgContainer [2020-08-21 22:48:07,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:48:07,406 INFO L168 Benchmark]: Toolchain (without parser) took 44308.18 ms. Allocated memory was 140.5 MB in the beginning and 727.7 MB in the end (delta: 587.2 MB). Free memory was 101.2 MB in the beginning and 291.8 MB in the end (delta: -190.6 MB). Peak memory consumption was 396.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:07,407 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:48:07,407 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.53 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 170.2 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:07,408 INFO L168 Benchmark]: Boogie Preprocessor took 112.88 ms. Allocated memory is still 202.9 MB. Free memory was 170.2 MB in the beginning and 165.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:07,409 INFO L168 Benchmark]: RCFGBuilder took 1259.50 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 165.4 MB in the beginning and 193.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:07,409 INFO L168 Benchmark]: TraceAbstraction took 42259.32 ms. Allocated memory was 236.5 MB in the beginning and 727.7 MB in the end (delta: 491.3 MB). Free memory was 193.3 MB in the beginning and 291.8 MB in the end (delta: -98.5 MB). Peak memory consumption was 392.8 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:07,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 668.53 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.0 MB in the beginning and 170.2 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.88 ms. Allocated memory is still 202.9 MB. Free memory was 170.2 MB in the beginning and 165.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1259.50 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 165.4 MB in the beginning and 193.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42259.32 ms. Allocated memory was 236.5 MB in the beginning and 727.7 MB in the end (delta: 491.3 MB). Free memory was 193.3 MB in the beginning and 291.8 MB in the end (delta: -98.5 MB). Peak memory consumption was 392.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L507] int cleanupTimeShifts = 4; [L648] int methAndRunningLastTime ; [L757] int pumpRunning = 0; [L758] int systemActive = 1; [L588] int retValue_acc ; [L589] int tmp ; [L593] FCALL select_helpers() [L594] FCALL select_features() [L595] CALL, EXPR valid_product() [L637] int retValue_acc ; [L640] retValue_acc = 1 [L641] return (retValue_acc); [L595] RET, EXPR valid_product() [L595] tmp = valid_product() [L597] COND TRUE \read(tmp) [L599] FCALL setup() [L600] CALL runTest() [L578] CALL __utac_acc__Specification2_spec__1() [L653] methAndRunningLastTime = 0 [L578] RET __utac_acc__Specification2_spec__1() [L579] CALL test() [L689] int splverifierCounter ; [L690] int tmp ; [L691] int tmp___0 ; [L692] int tmp___1 ; [L693] int tmp___2 ; [L696] splverifierCounter = 0 [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND TRUE \read(tmp) [L710] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L710] RET waterRise() [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND FALSE !(\read(pumpRunning)) [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND TRUE ! pumpRunning [L798] CALL, EXPR isHighWaterLevel() [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; [L914] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L914] RET, EXPR isHighWaterSensorDry() [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); [L798] RET, EXPR isHighWaterLevel() [L798] tmp = isHighWaterLevel() [L800] COND TRUE \read(tmp) [L802] CALL activatePump() [L827] int tmp ; [L831] CALL, EXPR isMethaneAlarm() [L852] int retValue_acc ; [L856] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] retValue_acc = isMethaneLevelCritical() [L858] return (retValue_acc); [L831] RET, EXPR isMethaneAlarm() [L831] tmp = isMethaneAlarm() [L833] COND FALSE !(\read(tmp)) [L837] CALL activatePump__wrappee__highWaterSensor() [L821] pumpRunning = 1 [L837] RET activatePump__wrappee__highWaterSensor() [L802] RET activatePump() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L681] methAndRunningLastTime = 0 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___0) [L720] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L720] RET changeMethaneLevel() [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND FALSE !(\read(methAndRunningLastTime)) [L675] methAndRunningLastTime = 1 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND TRUE \read(methAndRunningLastTime) [L672] CALL __automaton_fail() [L946] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.1s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 35.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1174 SDtfs, 3840 SDslu, 1776 SDs, 0 SdLazy, 8596 SolverSat, 2672 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 15.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1482occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 2250 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 999 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 272874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 38/42 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...