/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_spec1_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:13:54,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:13:54,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:13:54,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:13:54,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:13:54,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:13:54,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:13:54,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:13:54,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:13:54,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:13:54,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:13:54,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:13:54,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:13:54,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:13:54,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:13:54,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:13:54,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:13:54,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:13:54,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:13:54,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:13:54,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:13:54,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:13:54,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:13:54,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:13:54,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:13:54,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:13:54,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:13:54,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:13:54,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:13:54,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:13:54,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:13:54,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:13:54,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:13:54,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:13:54,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:13:54,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:13:54,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:13:54,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:13:54,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:13:54,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:13:54,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:13:54,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:13:54,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:13:54,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:13:54,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:13:54,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:13:54,742 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:13:54,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:13:54,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:13:54,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:13:54,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:13:54,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:13:54,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:13:54,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:13:54,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:13:54,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:13:54,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:13:54,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:13:54,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:13:54,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:13:54,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:13:54,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:13:54,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:13:54,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:13:54,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:13:54,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:13:54,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:13:54,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:13:54,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:13:54,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:13:54,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:13:54,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:13:55,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:13:55,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:13:55,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:13:55,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:13:55,103 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:13:55,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-22 05:13:55,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f264c9c/7970035b3e8542e1a75113dd296e0bde/FLAG74af5a14f [2020-08-22 05:13:55,759 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:13:55,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-22 05:13:55,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f264c9c/7970035b3e8542e1a75113dd296e0bde/FLAG74af5a14f [2020-08-22 05:13:56,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61f264c9c/7970035b3e8542e1a75113dd296e0bde [2020-08-22 05:13:56,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:13:56,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:13:56,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:13:56,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:13:56,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:13:56,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b01e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56, skipping insertion in model container [2020-08-22 05:13:56,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:13:56,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:13:56,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:13:56,667 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:13:56,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:13:56,802 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:13:56,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56 WrapperNode [2020-08-22 05:13:56,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:13:56,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:13:56,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:13:56,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:13:56,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:13:56,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:13:56,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:13:56,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:13:56,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:13:56,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:13:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:13:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:13:56,965 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:13:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:13:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:13:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:13:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:13:56,967 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:13:56,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:13:56,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:13:56,968 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:13:56,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:13:56,968 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:13:56,968 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:13:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:13:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 05:13:56,969 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:13:56,970 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:13:56,970 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:13:56,971 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:13:56,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:13:56,971 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:13:56,971 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:13:56,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:13:56,973 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:13:56,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:13:56,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:13:56,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:13:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:13:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:13:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:13:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:13:56,976 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:13:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:13:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:13:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:13:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:13:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:13:56,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:13:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:13:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:13:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:13:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:13:56,978 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:13:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:13:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:13:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:13:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:13:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:13:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:13:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:13:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:13:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:13:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 05:13:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:13:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:13:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:13:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:13:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:13:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:13:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:13:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:13:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:13:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:13:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:13:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:13:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:13:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:13:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:13:56,983 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:13:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:13:56,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:13:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:13:56,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:13:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:13:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:13:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:13:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:13:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:13:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:13:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:13:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:13:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:13:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:13:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:13:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:13:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:13:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:13:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:13:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:13:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:13:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:13:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:13:58,038 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:13:58,039 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:13:58,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:13:58 BoogieIcfgContainer [2020-08-22 05:13:58,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:13:58,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:13:58,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:13:58,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:13:58,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:13:56" (1/3) ... [2020-08-22 05:13:58,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b9b374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:13:58, skipping insertion in model container [2020-08-22 05:13:58,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56" (2/3) ... [2020-08-22 05:13:58,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b9b374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:13:58, skipping insertion in model container [2020-08-22 05:13:58,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:13:58" (3/3) ... [2020-08-22 05:13:58,052 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-08-22 05:13:58,062 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:13:58,071 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:13:58,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:13:58,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:13:58,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:13:58,110 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:13:58,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:13:58,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:13:58,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:13:58,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:13:58,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:13:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-22 05:13:58,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:13:58,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:13:58,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:13:58,146 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:13:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:13:58,151 INFO L82 PathProgramCache]: Analyzing trace with hash -963613915, now seen corresponding path program 1 times [2020-08-22 05:13:58,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:13:58,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277071989] [2020-08-22 05:13:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:13:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,803 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:13:58,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:13:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:13:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:13:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:13:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:13:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:13:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:13:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:13:58,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277071989] [2020-08-22 05:13:58,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:13:58,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:13:58,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963138124] [2020-08-22 05:13:58,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:13:58,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:13:58,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:13:58,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:13:58,925 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-22 05:14:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:00,058 INFO L93 Difference]: Finished difference Result 310 states and 407 transitions. [2020-08-22 05:14:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:14:00,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:14:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:00,076 INFO L225 Difference]: With dead ends: 310 [2020-08-22 05:14:00,076 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 05:14:00,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:14:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 05:14:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-22 05:14:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 05:14:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-08-22 05:14:00,222 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 46 [2020-08-22 05:14:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:00,223 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-08-22 05:14:00,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:14:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-08-22 05:14:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:14:00,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:00,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:00,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:14:00,233 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:00,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1539591980, now seen corresponding path program 1 times [2020-08-22 05:14:00,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:00,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069404638] [2020-08-22 05:14:00,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,611 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:14:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:14:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:00,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069404638] [2020-08-22 05:14:00,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:00,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:14:00,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464813206] [2020-08-22 05:14:00,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:14:00,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:00,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:14:00,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:14:00,724 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 4 states. [2020-08-22 05:14:01,112 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:01,941 INFO L93 Difference]: Finished difference Result 233 states and 286 transitions. [2020-08-22 05:14:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:14:01,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:14:01,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:01,946 INFO L225 Difference]: With dead ends: 233 [2020-08-22 05:14:01,946 INFO L226 Difference]: Without dead ends: 152 [2020-08-22 05:14:01,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:14:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-22 05:14:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-22 05:14:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 05:14:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-22 05:14:01,986 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 47 [2020-08-22 05:14:01,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:01,987 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-22 05:14:01,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:14:01,987 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-22 05:14:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:14:01,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:01,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:01,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:14:01,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:01,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1079098286, now seen corresponding path program 1 times [2020-08-22 05:14:01,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:01,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076960394] [2020-08-22 05:14:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,367 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:02,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:14:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:14:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:02,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076960394] [2020-08-22 05:14:02,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:02,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:14:02,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118352739] [2020-08-22 05:14:02,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:14:02,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:02,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:14:02,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:14:02,440 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 8 states. [2020-08-22 05:14:02,875 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:03,152 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:03,416 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:03,639 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:04,327 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:06,062 INFO L93 Difference]: Finished difference Result 427 states and 532 transitions. [2020-08-22 05:14:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:14:06,063 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 05:14:06,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:06,068 INFO L225 Difference]: With dead ends: 427 [2020-08-22 05:14:06,068 INFO L226 Difference]: Without dead ends: 327 [2020-08-22 05:14:06,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:14:06,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-22 05:14:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 262. [2020-08-22 05:14:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-22 05:14:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 318 transitions. [2020-08-22 05:14:06,144 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 318 transitions. Word has length 52 [2020-08-22 05:14:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:06,145 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 318 transitions. [2020-08-22 05:14:06,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:14:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 318 transitions. [2020-08-22 05:14:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:14:06,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:06,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:06,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:14:06,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:06,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1051584563, now seen corresponding path program 1 times [2020-08-22 05:14:06,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:06,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975591534] [2020-08-22 05:14:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,464 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:14:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:14:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:14:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:06,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975591534] [2020-08-22 05:14:06,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:06,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:14:06,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136654283] [2020-08-22 05:14:06,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:14:06,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:06,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:14:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:14:06,567 INFO L87 Difference]: Start difference. First operand 262 states and 318 transitions. Second operand 8 states. [2020-08-22 05:14:06,920 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:07,821 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:08,160 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:08,430 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:08,701 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:09,176 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:10,044 INFO L93 Difference]: Finished difference Result 847 states and 1105 transitions. [2020-08-22 05:14:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:14:10,045 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 05:14:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:10,051 INFO L225 Difference]: With dead ends: 847 [2020-08-22 05:14:10,052 INFO L226 Difference]: Without dead ends: 609 [2020-08-22 05:14:10,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:14:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-08-22 05:14:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 479. [2020-08-22 05:14:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-08-22 05:14:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 586 transitions. [2020-08-22 05:14:10,171 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 586 transitions. Word has length 57 [2020-08-22 05:14:10,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:10,171 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 586 transitions. [2020-08-22 05:14:10,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:14:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 586 transitions. [2020-08-22 05:14:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:14:10,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:10,174 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] [2020-08-22 05:14:10,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:14:10,174 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:10,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash -450930313, now seen corresponding path program 1 times [2020-08-22 05:14:10,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:10,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080809701] [2020-08-22 05:14:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,454 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:10,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:14:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:14:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:14:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:10,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080809701] [2020-08-22 05:14:10,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:10,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:14:10,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399438821] [2020-08-22 05:14:10,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:14:10,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:10,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:14:10,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:14:10,560 INFO L87 Difference]: Start difference. First operand 479 states and 586 transitions. Second operand 9 states. [2020-08-22 05:14:10,970 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:11,967 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:12,225 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:12,455 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:13,018 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:13,312 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:14,378 INFO L93 Difference]: Finished difference Result 1361 states and 1836 transitions. [2020-08-22 05:14:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:14:14,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 05:14:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:14,390 INFO L225 Difference]: With dead ends: 1361 [2020-08-22 05:14:14,390 INFO L226 Difference]: Without dead ends: 906 [2020-08-22 05:14:14,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:14:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-22 05:14:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 719. [2020-08-22 05:14:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-08-22 05:14:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 887 transitions. [2020-08-22 05:14:14,596 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 887 transitions. Word has length 61 [2020-08-22 05:14:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:14,597 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 887 transitions. [2020-08-22 05:14:14,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:14:14,598 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 887 transitions. [2020-08-22 05:14:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 05:14:14,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:14,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:14,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:14:14,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:14,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1506642599, now seen corresponding path program 1 times [2020-08-22 05:14:14,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:14,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349417271] [2020-08-22 05:14:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:14,950 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:14,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:14:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 05:14:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 05:14:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:15,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349417271] [2020-08-22 05:14:15,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:15,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:14:15,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034439252] [2020-08-22 05:14:15,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:14:15,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:15,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:14:15,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:14:15,105 INFO L87 Difference]: Start difference. First operand 719 states and 887 transitions. Second operand 9 states. [2020-08-22 05:14:15,560 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:16,589 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:16,857 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:17,142 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:17,395 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:19,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:19,177 INFO L93 Difference]: Finished difference Result 2409 states and 3416 transitions. [2020-08-22 05:14:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:14:19,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-22 05:14:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:19,193 INFO L225 Difference]: With dead ends: 2409 [2020-08-22 05:14:19,193 INFO L226 Difference]: Without dead ends: 1714 [2020-08-22 05:14:19,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:14:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-22 05:14:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1291. [2020-08-22 05:14:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-08-22 05:14:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1578 transitions. [2020-08-22 05:14:19,481 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1578 transitions. Word has length 84 [2020-08-22 05:14:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:19,482 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1578 transitions. [2020-08-22 05:14:19,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:14:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1578 transitions. [2020-08-22 05:14:19,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 05:14:19,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:19,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:19,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:14:19,488 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:19,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:19,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1762832698, now seen corresponding path program 1 times [2020-08-22 05:14:19,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:19,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176794730] [2020-08-22 05:14:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,804 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:14:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 05:14:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 05:14:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:19,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176794730] [2020-08-22 05:14:19,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:19,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:14:19,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326794202] [2020-08-22 05:14:19,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:14:19,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:19,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:14:19,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:14:19,988 INFO L87 Difference]: Start difference. First operand 1291 states and 1578 transitions. Second operand 9 states. [2020-08-22 05:14:21,247 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:21,500 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:14:21,755 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:21,981 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:23,268 INFO L93 Difference]: Finished difference Result 2981 states and 3956 transitions. [2020-08-22 05:14:23,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:14:23,269 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-22 05:14:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:23,284 INFO L225 Difference]: With dead ends: 2981 [2020-08-22 05:14:23,285 INFO L226 Difference]: Without dead ends: 1714 [2020-08-22 05:14:23,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:14:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-22 05:14:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1331. [2020-08-22 05:14:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-08-22 05:14:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1618 transitions. [2020-08-22 05:14:23,547 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1618 transitions. Word has length 84 [2020-08-22 05:14:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:23,548 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1618 transitions. [2020-08-22 05:14:23,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:14:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1618 transitions. [2020-08-22 05:14:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-22 05:14:23,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:23,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:23,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:14:23,552 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:23,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1785464952, now seen corresponding path program 1 times [2020-08-22 05:14:23,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:23,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2822048] [2020-08-22 05:14:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,824 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:14:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 05:14:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 05:14:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:23,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2822048] [2020-08-22 05:14:23,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:23,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:14:23,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708421900] [2020-08-22 05:14:23,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:14:23,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:14:23,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:14:23,957 INFO L87 Difference]: Start difference. First operand 1331 states and 1618 transitions. Second operand 11 states. [2020-08-22 05:14:24,476 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:24,722 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:24,946 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:25,719 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:25,997 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:26,260 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:27,498 INFO L93 Difference]: Finished difference Result 2667 states and 3504 transitions. [2020-08-22 05:14:27,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:14:27,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-22 05:14:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:27,510 INFO L225 Difference]: With dead ends: 2667 [2020-08-22 05:14:27,510 INFO L226 Difference]: Without dead ends: 1360 [2020-08-22 05:14:27,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:14:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-08-22 05:14:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1097. [2020-08-22 05:14:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2020-08-22 05:14:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1306 transitions. [2020-08-22 05:14:27,719 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1306 transitions. Word has length 84 [2020-08-22 05:14:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:27,719 INFO L479 AbstractCegarLoop]: Abstraction has 1097 states and 1306 transitions. [2020-08-22 05:14:27,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:14:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1306 transitions. [2020-08-22 05:14:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 05:14:27,723 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:27,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:27,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:14:27,723 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:27,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1546032113, now seen corresponding path program 1 times [2020-08-22 05:14:27,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:27,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645160076] [2020-08-22 05:14:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:14:27,778 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:14:27,778 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:14:27,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:14:27,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:14:27 BoogieIcfgContainer [2020-08-22 05:14:27,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:14:27,813 INFO L168 Benchmark]: Toolchain (without parser) took 31681.71 ms. Allocated memory was 140.0 MB in the beginning and 719.8 MB in the end (delta: 579.9 MB). Free memory was 101.8 MB in the beginning and 488.1 MB in the end (delta: -386.3 MB). Peak memory consumption was 193.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:27,814 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 05:14:27,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.25 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 170.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:27,815 INFO L168 Benchmark]: Boogie Preprocessor took 91.10 ms. Allocated memory is still 202.9 MB. Free memory was 170.7 MB in the beginning and 166.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:27,816 INFO L168 Benchmark]: RCFGBuilder took 1149.32 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.0 MB in the beginning and 197.0 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:27,817 INFO L168 Benchmark]: TraceAbstraction took 29766.63 ms. Allocated memory was 236.5 MB in the beginning and 719.8 MB in the end (delta: 483.4 MB). Free memory was 195.5 MB in the beginning and 488.1 MB in the end (delta: -292.5 MB). Peak memory consumption was 190.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:27,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.25 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 170.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.10 ms. Allocated memory is still 202.9 MB. Free memory was 170.7 MB in the beginning and 166.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1149.32 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 166.0 MB in the beginning and 197.0 MB in the end (delta: -31.0 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29766.63 ms. Allocated memory was 236.5 MB in the beginning and 719.8 MB in the end (delta: 483.4 MB). Free memory was 195.5 MB in the beginning and 488.1 MB in the end (delta: -292.5 MB). Peak memory consumption was 190.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 490]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int pumpRunning = 0; [L52] int systemActive = 1; [L352] int cleanupTimeShifts = 4; [L664] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L428] int retValue_acc ; [L429] int tmp ; [L433] FCALL select_helpers() [L434] FCALL select_features() [L435] CALL, EXPR valid_product() [L477] int retValue_acc ; [L480] retValue_acc = 1 [L481] return (retValue_acc); [L435] RET, EXPR valid_product() [L435] tmp = valid_product() [L437] COND TRUE \read(tmp) [L439] FCALL setup() [L440] CALL runTest() [L419] CALL test() [L257] int splverifierCounter ; [L258] int tmp ; [L259] int tmp___0 ; [L260] int tmp___1 ; [L261] int tmp___2 ; [L264] splverifierCounter = 0 [L266] COND TRUE 1 [L268] COND TRUE splverifierCounter < 4 [L274] tmp = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp) [L278] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L278] RET waterRise() [L284] tmp___0 = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp___0) [L288] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L288] RET changeMethaneLevel() [L294] tmp___2 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp___2)) [L302] tmp___1 = __VERIFIER_nondet_int() [L304] COND FALSE !(\read(tmp___1)) [L313] CALL timeShift() [L59] COND FALSE !(\read(pumpRunning)) [L66] COND TRUE \read(systemActive) [L68] CALL processEnvironment() [L114] int tmp ; [L117] COND FALSE !(\read(pumpRunning)) [L132] CALL processEnvironment__wrappee__highWaterSensor() [L88] int tmp ; [L91] COND TRUE ! pumpRunning [L93] CALL, EXPR isHighWaterLevel() [L211] int retValue_acc ; [L212] int tmp ; [L213] int tmp___0 ; [L217] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L217] RET, EXPR isHighWaterSensorDry() [L217] tmp = isHighWaterSensorDry() [L219] COND FALSE !(\read(tmp)) [L222] tmp___0 = 1 [L224] retValue_acc = tmp___0 [L225] return (retValue_acc); [L93] RET, EXPR isHighWaterLevel() [L93] tmp = isHighWaterLevel() [L95] COND TRUE \read(tmp) [L97] CALL activatePump() [L142] pumpRunning = 1 [L97] RET activatePump() [L132] RET processEnvironment__wrappee__highWaterSensor() [L68] RET processEnvironment() [L74] CALL __utac_acc__Specification1_spec__1() [L327] int tmp ; [L328] int tmp___0 ; [L332] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L332] RET, EXPR isMethaneLevelCritical() [L332] tmp = isMethaneLevelCritical() [L334] COND TRUE \read(tmp) [L336] CALL, EXPR isPumpRunning() [L166] int retValue_acc ; [L169] retValue_acc = pumpRunning [L170] return (retValue_acc); [L336] RET, EXPR isPumpRunning() [L336] tmp___0 = isPumpRunning() [L338] COND TRUE \read(tmp___0) [L340] CALL __automaton_fail() [L490] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 948 SDtfs, 1824 SDslu, 1222 SDs, 0 SdLazy, 5513 SolverSat, 1252 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1331occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1514 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 150284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...