/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:59:20,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:59:20,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:59:20,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:59:20,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:59:20,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:59:20,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:59:20,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:59:20,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:59:20,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:59:20,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:59:20,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:59:20,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:59:20,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:59:20,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:59:20,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:59:20,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:59:20,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:59:20,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:59:20,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:59:20,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:59:20,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:59:20,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:59:20,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:59:20,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:59:20,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:59:20,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:59:20,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:59:20,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:59:20,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:59:20,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:59:20,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:59:20,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:59:20,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:59:20,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:59:20,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:59:20,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:59:20,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:59:20,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:59:20,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:59:20,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:59:20,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:59:20,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:59:20,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:59:20,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:59:20,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:59:20,710 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:59:20,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:59:20,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:59:20,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:59:20,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:59:20,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:59:20,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:59:20,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:59:20,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:59:20,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:59:20,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:59:20,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:59:20,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:59:20,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:59:20,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:59:20,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:59:20,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:59:20,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:59:20,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:59:20,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:59:20,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:59:20,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:59:20,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:59:20,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:59:20,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:59:20,715 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 -> log-additional-information=true; [2020-08-21 13:59:20,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:59:21,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:59:21,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:59:21,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:59:21,021 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:59:21,022 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-21 13:59:21,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdcaaf0ed/d6ca5ce0fdfb4eddb7526283021c8d89/FLAG29cc5352d [2020-08-21 13:59:21,643 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:59:21,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-08-21 13:59:21,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdcaaf0ed/d6ca5ce0fdfb4eddb7526283021c8d89/FLAG29cc5352d [2020-08-21 13:59:21,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdcaaf0ed/d6ca5ce0fdfb4eddb7526283021c8d89 [2020-08-21 13:59:21,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:59:21,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:59:21,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:59:21,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:59:21,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:59:21,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:59:21" (1/1) ... [2020-08-21 13:59:21,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:21, skipping insertion in model container [2020-08-21 13:59:21,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:59:21" (1/1) ... [2020-08-21 13:59:21,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:59:22,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:59:22,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:59:22,406 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:59:22,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:59:22,557 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:59:22,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22 WrapperNode [2020-08-21 13:59:22,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:59:22,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:59:22,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:59:22,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:59:22,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... [2020-08-21 13:59:22,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... [2020-08-21 13:59:22,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... [2020-08-21 13:59:22,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... [2020-08-21 13:59:22,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... [2020-08-21 13:59:22,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... [2020-08-21 13:59:22,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... [2020-08-21 13:59:22,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:59:22,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:59:22,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:59:22,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:59:22,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:59:22,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:59:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:59:22,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:59:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:59:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:59:22,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:59:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:59:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:59:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:59:22,754 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:59:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:59:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:59:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:59:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:59:22,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:59:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:59:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:59:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:59:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:59:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:59:22,758 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:59:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:59:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:59:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:59:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:59:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:59:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:59:22,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:59:22,762 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:59:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:59:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:59:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:59:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:59:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:59:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:59:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:59:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:59:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:59:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:59:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:59:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:59:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:59:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:59:22,765 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:59:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:59:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:59:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:59:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:59:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:59:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:59:22,766 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:59:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:59:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:59:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:59:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:59:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:59:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:59:22,767 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:59:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:59:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:59:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:59:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:59:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:59:22,768 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:59:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:59:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:59:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:59:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:59:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:59:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:59:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:59:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:59:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:59:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:59:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:59:22,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:59:22,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:59:23,908 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:59:23,908 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:59:23,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:59:23 BoogieIcfgContainer [2020-08-21 13:59:23,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:59:23,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:59:23,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:59:23,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:59:23,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:59:21" (1/3) ... [2020-08-21 13:59:23,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ab024a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:59:23, skipping insertion in model container [2020-08-21 13:59:23,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:59:22" (2/3) ... [2020-08-21 13:59:23,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ab024a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:59:23, skipping insertion in model container [2020-08-21 13:59:23,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:59:23" (3/3) ... [2020-08-21 13:59:23,927 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-08-21 13:59:23,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:59:23,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:59:23,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:59:23,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:59:23,977 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:59:23,977 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:59:23,978 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:59:23,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:59:23,978 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:59:23,978 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:59:23,978 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:59:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-21 13:59:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:59:24,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:24,013 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] [2020-08-21 13:59:24,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:24,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1463974042, now seen corresponding path program 1 times [2020-08-21 13:59:24,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:24,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491287887] [2020-08-21 13:59:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,664 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:24,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:59:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:59:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:24,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491287887] [2020-08-21 13:59:24,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:24,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:59:24,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836442508] [2020-08-21 13:59:24,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:59:24,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:24,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:59:24,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:59:24,784 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-21 13:59:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:25,949 INFO L93 Difference]: Finished difference Result 302 states and 392 transitions. [2020-08-21 13:59:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:59:25,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:59:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:25,966 INFO L225 Difference]: With dead ends: 302 [2020-08-21 13:59:25,966 INFO L226 Difference]: Without dead ends: 163 [2020-08-21 13:59:25,971 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 [2020-08-21 13:59:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-21 13:59:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2020-08-21 13:59:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 13:59:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-21 13:59:26,062 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-21 13:59:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:26,063 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-21 13:59:26,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:59:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-21 13:59:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:59:26,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:26,067 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] [2020-08-21 13:59:26,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:59:26,067 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:26,068 INFO L82 PathProgramCache]: Analyzing trace with hash 842471544, now seen corresponding path program 1 times [2020-08-21 13:59:26,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:26,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292186792] [2020-08-21 13:59:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,465 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:26,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:59:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:59:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:26,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292186792] [2020-08-21 13:59:26,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:26,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:59:26,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16080039] [2020-08-21 13:59:26,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:59:26,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:26,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:59:26,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:59:26,533 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-21 13:59:26,906 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:27,648 INFO L93 Difference]: Finished difference Result 231 states and 279 transitions. [2020-08-21 13:59:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:59:27,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:59:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:27,653 INFO L225 Difference]: With dead ends: 231 [2020-08-21 13:59:27,653 INFO L226 Difference]: Without dead ends: 147 [2020-08-21 13:59:27,655 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 [2020-08-21 13:59:27,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-21 13:59:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-21 13:59:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 13:59:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-21 13:59:27,690 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-21 13:59:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:27,691 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-21 13:59:27,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:59:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-21 13:59:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:59:27,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:27,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:27,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:59:27,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:27,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1913748360, now seen corresponding path program 1 times [2020-08-21 13:59:27,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:27,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164244986] [2020-08-21 13:59:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:27,994 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:28,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:28,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:59:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:28,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:59:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:28,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164244986] [2020-08-21 13:59:28,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:28,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:59:28,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610691147] [2020-08-21 13:59:28,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:59:28,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:28,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:59:28,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:59:28,079 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-21 13:59:28,426 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:28,708 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:28,954 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:29,198 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:30,323 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2020-08-21 13:59:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:59:30,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 13:59:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:30,327 INFO L225 Difference]: With dead ends: 244 [2020-08-21 13:59:30,327 INFO L226 Difference]: Without dead ends: 147 [2020-08-21 13:59:30,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-21 13:59:30,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-08-21 13:59:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 13:59:30,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2020-08-21 13:59:30,360 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 52 [2020-08-21 13:59:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:30,360 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2020-08-21 13:59:30,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:59:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2020-08-21 13:59:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 13:59:30,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:30,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:30,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:59:30,363 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1607213040, now seen corresponding path program 1 times [2020-08-21 13:59:30,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:30,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700561524] [2020-08-21 13:59:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,651 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:59:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:59:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 13:59:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:30,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700561524] [2020-08-21 13:59:30,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:30,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:59:30,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213341701] [2020-08-21 13:59:30,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:59:30,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:30,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:59:30,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:59:30,733 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 6 states. [2020-08-21 13:59:31,038 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:32,209 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:32,862 INFO L93 Difference]: Finished difference Result 341 states and 419 transitions. [2020-08-21 13:59:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:59:32,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 13:59:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:32,866 INFO L225 Difference]: With dead ends: 341 [2020-08-21 13:59:32,866 INFO L226 Difference]: Without dead ends: 244 [2020-08-21 13:59:32,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:59:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-21 13:59:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-21 13:59:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-21 13:59:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 227 transitions. [2020-08-21 13:59:32,919 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 227 transitions. Word has length 65 [2020-08-21 13:59:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:32,919 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 227 transitions. [2020-08-21 13:59:32,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:59:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 227 transitions. [2020-08-21 13:59:32,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:59:32,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:32,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:32,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:59:32,923 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:32,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:32,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1567646189, now seen corresponding path program 1 times [2020-08-21 13:59:32,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:32,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882453116] [2020-08-21 13:59:32,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,263 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:59:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:59:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:59:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:59:33,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882453116] [2020-08-21 13:59:33,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:59:33,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:59:33,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901809858] [2020-08-21 13:59:33,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:59:33,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:33,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:59:33,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:33,405 INFO L87 Difference]: Start difference. First operand 201 states and 227 transitions. Second operand 12 states. [2020-08-21 13:59:33,799 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:34,115 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:34,361 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:34,608 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:35,138 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:36,043 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:36,340 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:36,605 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:36,844 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:37,116 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:37,377 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:38,656 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:38,998 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:39,544 INFO L93 Difference]: Finished difference Result 707 states and 910 transitions. [2020-08-21 13:59:39,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:59:39,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 13:59:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:39,557 INFO L225 Difference]: With dead ends: 707 [2020-08-21 13:59:39,557 INFO L226 Difference]: Without dead ends: 530 [2020-08-21 13:59:39,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:59:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-08-21 13:59:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 468. [2020-08-21 13:59:39,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-21 13:59:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 547 transitions. [2020-08-21 13:59:39,668 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 547 transitions. Word has length 79 [2020-08-21 13:59:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:39,669 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 547 transitions. [2020-08-21 13:59:39,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:59:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 547 transitions. [2020-08-21 13:59:39,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 13:59:39,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:39,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:39,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:59:39,674 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:39,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1919635093, now seen corresponding path program 1 times [2020-08-21 13:59:39,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:39,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228672400] [2020-08-21 13:59:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:39,957 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:39,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:59:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:59:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:59:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:59:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 13:59:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:59:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:59:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:59:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 13:59:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 13:59:40,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228672400] [2020-08-21 13:59:40,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:40,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:59:40,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808231362] [2020-08-21 13:59:40,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:59:40,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:40,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:59:40,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:59:40,243 INFO L87 Difference]: Start difference. First operand 468 states and 547 transitions. Second operand 13 states. [2020-08-21 13:59:40,673 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:41,265 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:41,819 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:42,076 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:59:42,370 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:42,607 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:59:42,832 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:43,073 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:59:43,339 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:43,601 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:45,218 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:45,452 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:59:45,673 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:45,899 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:46,479 INFO L93 Difference]: Finished difference Result 951 states and 1203 transitions. [2020-08-21 13:59:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 13:59:46,480 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-21 13:59:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:46,484 INFO L225 Difference]: With dead ends: 951 [2020-08-21 13:59:46,484 INFO L226 Difference]: Without dead ends: 507 [2020-08-21 13:59:46,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 13:59:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2020-08-21 13:59:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2020-08-21 13:59:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2020-08-21 13:59:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 518 transitions. [2020-08-21 13:59:46,573 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 518 transitions. Word has length 136 [2020-08-21 13:59:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:46,574 INFO L479 AbstractCegarLoop]: Abstraction has 440 states and 518 transitions. [2020-08-21 13:59:46,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:59:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 518 transitions. [2020-08-21 13:59:46,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-21 13:59:46,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:46,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:46,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:59:46,577 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash 529869601, now seen corresponding path program 1 times [2020-08-21 13:59:46,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:46,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381297879] [2020-08-21 13:59:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,826 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:46,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:59:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:59:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 13:59:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 13:59:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:59:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 13:59:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 13:59:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 13:59:47,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381297879] [2020-08-21 13:59:47,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:47,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:59:47,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781373043] [2020-08-21 13:59:47,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:59:47,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:59:47,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:59:47,018 INFO L87 Difference]: Start difference. First operand 440 states and 518 transitions. Second operand 12 states. [2020-08-21 13:59:47,709 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:47,937 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:48,150 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:48,712 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:48,941 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:49,154 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:49,995 INFO L93 Difference]: Finished difference Result 803 states and 979 transitions. [2020-08-21 13:59:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:59:49,997 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-21 13:59:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:50,001 INFO L225 Difference]: With dead ends: 803 [2020-08-21 13:59:50,001 INFO L226 Difference]: Without dead ends: 387 [2020-08-21 13:59:50,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:59:50,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-08-21 13:59:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 361. [2020-08-21 13:59:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-21 13:59:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 422 transitions. [2020-08-21 13:59:50,064 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 422 transitions. Word has length 128 [2020-08-21 13:59:50,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:50,064 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 422 transitions. [2020-08-21 13:59:50,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:59:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 422 transitions. [2020-08-21 13:59:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 13:59:50,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:50,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:50,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:59:50,067 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:50,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1312911802, now seen corresponding path program 1 times [2020-08-21 13:59:50,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:50,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148758870] [2020-08-21 13:59:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,329 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:59:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:59:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:59:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 13:59:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 13:59:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:59:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 13:59:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 13:59:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 13:59:50,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148758870] [2020-08-21 13:59:50,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:50,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:59:50,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989556603] [2020-08-21 13:59:50,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:59:50,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:50,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:59:50,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:59:50,588 INFO L87 Difference]: Start difference. First operand 361 states and 422 transitions. Second operand 13 states. [2020-08-21 13:59:51,041 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:51,726 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:59:53,598 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:53,868 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:54,128 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:54,374 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:54,637 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:54,891 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:55,136 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:59:55,388 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:55,663 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:55,932 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:59:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:59:56,565 INFO L93 Difference]: Finished difference Result 1017 states and 1234 transitions. [2020-08-21 13:59:56,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 13:59:56,565 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 132 [2020-08-21 13:59:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:59:56,570 INFO L225 Difference]: With dead ends: 1017 [2020-08-21 13:59:56,571 INFO L226 Difference]: Without dead ends: 680 [2020-08-21 13:59:56,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2020-08-21 13:59:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-08-21 13:59:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 638. [2020-08-21 13:59:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-21 13:59:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 736 transitions. [2020-08-21 13:59:56,747 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 736 transitions. Word has length 132 [2020-08-21 13:59:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:59:56,748 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 736 transitions. [2020-08-21 13:59:56,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:59:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 736 transitions. [2020-08-21 13:59:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 13:59:56,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:59:56,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:59:56,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:59:56,751 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:59:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:59:56,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1866114282, now seen corresponding path program 1 times [2020-08-21 13:59:56,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:59:56,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295639556] [2020-08-21 13:59:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:59:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,042 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:59:57,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:59:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:59:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:59:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:59:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:59:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:59:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:59:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:59:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:59:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:59:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 13:59:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 13:59:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:59:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:59:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:59:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 13:59:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 13:59:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:59:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 13:59:57,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295639556] [2020-08-21 13:59:57,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:59:57,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 13:59:57,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918492037] [2020-08-21 13:59:57,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:59:57,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:59:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:59:57,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:59:57,231 INFO L87 Difference]: Start difference. First operand 638 states and 736 transitions. Second operand 11 states. [2020-08-21 13:59:57,855 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:59:59,870 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:00,097 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:00,365 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:00,619 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:00,840 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:00:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:00:01,385 INFO L93 Difference]: Finished difference Result 764 states and 950 transitions. [2020-08-21 14:00:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 14:00:01,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-21 14:00:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:00:01,391 INFO L225 Difference]: With dead ends: 764 [2020-08-21 14:00:01,392 INFO L226 Difference]: Without dead ends: 761 [2020-08-21 14:00:01,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 14:00:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-08-21 14:00:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 638. [2020-08-21 14:00:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2020-08-21 14:00:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 734 transitions. [2020-08-21 14:00:01,521 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 734 transitions. Word has length 136 [2020-08-21 14:00:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:00:01,522 INFO L479 AbstractCegarLoop]: Abstraction has 638 states and 734 transitions. [2020-08-21 14:00:01,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:00:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 734 transitions. [2020-08-21 14:00:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 14:00:01,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:00:01,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:00:01,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:00:01,526 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:00:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:00:01,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1647665506, now seen corresponding path program 1 times [2020-08-21 14:00:01,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:00:01,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791623752] [2020-08-21 14:00:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:00:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,829 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:00:01,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:00:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:00:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:00:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:00:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:00:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:00:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:00:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:00:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:00:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 14:00:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 14:00:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:00:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 14:00:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:01,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 14:00:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 14:00:02,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791623752] [2020-08-21 14:00:02,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:00:02,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:00:02,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396803631] [2020-08-21 14:00:02,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:00:02,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:00:02,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:00:02,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:00:02,031 INFO L87 Difference]: Start difference. First operand 638 states and 734 transitions. Second operand 12 states. [2020-08-21 14:00:02,504 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:00:03,360 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:03,920 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:00:04,195 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:04,435 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:04,669 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:04,973 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:05,221 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:06,811 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:07,082 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:00:07,640 INFO L93 Difference]: Finished difference Result 1512 states and 1864 transitions. [2020-08-21 14:00:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 14:00:07,641 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-21 14:00:07,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:00:07,648 INFO L225 Difference]: With dead ends: 1512 [2020-08-21 14:00:07,649 INFO L226 Difference]: Without dead ends: 1024 [2020-08-21 14:00:07,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-21 14:00:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-08-21 14:00:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 867. [2020-08-21 14:00:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-21 14:00:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1012 transitions. [2020-08-21 14:00:07,809 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1012 transitions. Word has length 136 [2020-08-21 14:00:07,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:00:07,809 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1012 transitions. [2020-08-21 14:00:07,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:00:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1012 transitions. [2020-08-21 14:00:07,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 14:00:07,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:00:07,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:00:07,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:00:07,814 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:00:07,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:00:07,814 INFO L82 PathProgramCache]: Analyzing trace with hash -960638147, now seen corresponding path program 2 times [2020-08-21 14:00:07,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:00:07,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059174350] [2020-08-21 14:00:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:00:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,108 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:00:08,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:00:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:00:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:00:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:00:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:00:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:00:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:00:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:00:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:00:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 14:00:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:00:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:00:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 14:00:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 14:00:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-21 14:00:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-21 14:00:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:00:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:00:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:00:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 14:00:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 14:00:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:00:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-21 14:00:08,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059174350] [2020-08-21 14:00:08,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:00:08,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 14:00:08,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614943745] [2020-08-21 14:00:08,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 14:00:08,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:00:08,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 14:00:08,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:00:08,364 INFO L87 Difference]: Start difference. First operand 867 states and 1012 transitions. Second operand 14 states. [2020-08-21 14:00:08,850 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:09,548 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:10,414 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:10,699 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:10,927 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:11,159 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:11,404 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:11,656 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:00:12,873 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:00:13,130 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:00:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:00:13,988 INFO L93 Difference]: Finished difference Result 2101 states and 2694 transitions. [2020-08-21 14:00:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 14:00:13,988 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2020-08-21 14:00:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:00:13,998 INFO L225 Difference]: With dead ends: 2101 [2020-08-21 14:00:13,998 INFO L226 Difference]: Without dead ends: 1384 [2020-08-21 14:00:14,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 14:00:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2020-08-21 14:00:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 865. [2020-08-21 14:00:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2020-08-21 14:00:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1010 transitions. [2020-08-21 14:00:14,172 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1010 transitions. Word has length 192 [2020-08-21 14:00:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:00:14,173 INFO L479 AbstractCegarLoop]: Abstraction has 865 states and 1010 transitions. [2020-08-21 14:00:14,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 14:00:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1010 transitions. [2020-08-21 14:00:14,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-08-21 14:00:14,177 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:00:14,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:00:14,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:00:14,178 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:00:14,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:00:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1788025149, now seen corresponding path program 3 times [2020-08-21 14:00:14,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:00:14,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532942379] [2020-08-21 14:00:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:00:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:00:14,245 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:00:14,246 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:00:14,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 14:00:14,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:00:14 BoogieIcfgContainer [2020-08-21 14:00:14,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:00:14,287 INFO L168 Benchmark]: Toolchain (without parser) took 52360.20 ms. Allocated memory was 138.4 MB in the beginning and 794.3 MB in the end (delta: 655.9 MB). Free memory was 100.2 MB in the beginning and 151.7 MB in the end (delta: -51.4 MB). Peak memory consumption was 604.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:14,287 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:00:14,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.08 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 170.2 MB in the end (delta: -70.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:14,288 INFO L168 Benchmark]: Boogie Preprocessor took 114.88 ms. Allocated memory is still 202.4 MB. Free memory was 170.2 MB in the beginning and 166.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:14,289 INFO L168 Benchmark]: RCFGBuilder took 1244.83 ms. Allocated memory was 202.4 MB in the beginning and 232.8 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 197.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:14,290 INFO L168 Benchmark]: TraceAbstraction took 50364.70 ms. Allocated memory was 232.8 MB in the beginning and 794.3 MB in the end (delta: 561.5 MB). Free memory was 197.6 MB in the beginning and 151.7 MB in the end (delta: 45.9 MB). Peak memory consumption was 607.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:00:14,292 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.08 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 170.2 MB in the end (delta: -70.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.88 ms. Allocated memory is still 202.4 MB. Free memory was 170.2 MB in the beginning and 166.0 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1244.83 ms. Allocated memory was 202.4 MB in the beginning and 232.8 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 197.6 MB in the end (delta: -31.6 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50364.70 ms. Allocated memory was 232.8 MB in the beginning and 794.3 MB in the end (delta: 561.5 MB). Free memory was 197.6 MB in the beginning and 151.7 MB in the end (delta: 45.9 MB). Peak memory consumption was 607.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 247]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L349] int pumpRunning = 0; [L350] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L281] int splverifierCounter ; [L282] int tmp ; [L283] int tmp___0 ; [L284] int tmp___1 ; [L285] int tmp___2 ; [L288] splverifierCounter = 0 [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND TRUE \read(tmp) [L302] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L302] RET waterRise() [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND FALSE !(\read(pumpRunning)) [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND FALSE !(\read(pumpRunning)) [L429] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND TRUE ! pumpRunning [L390] CALL, EXPR isHighWaterLevel() [L508] int retValue_acc ; [L509] int tmp ; [L510] int tmp___0 ; [L514] CALL, EXPR isHighWaterSensorDry() [L229] int retValue_acc ; [L232] COND FALSE !(waterLevel < 2) [L236] retValue_acc = 0 [L237] return (retValue_acc); [L514] RET, EXPR isHighWaterSensorDry() [L514] tmp = isHighWaterSensorDry() [L516] COND FALSE !(\read(tmp)) [L519] tmp___0 = 1 [L521] retValue_acc = tmp___0 [L522] return (retValue_acc); [L390] RET, EXPR isHighWaterLevel() [L390] tmp = isHighWaterLevel() [L392] COND TRUE \read(tmp) [L394] CALL activatePump() [L439] pumpRunning = 1 [L394] RET activatePump() [L429] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND FALSE !(\read(tmp___2)) [L326] tmp___1 = __VERIFIER_nondet_int() [L328] COND TRUE \read(tmp___1) [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND TRUE tmp == 0 [L263] CALL, EXPR isPumpRunning() [L463] int retValue_acc ; [L466] retValue_acc = pumpRunning [L467] return (retValue_acc); [L263] RET, EXPR isPumpRunning() [L263] tmp___0 = isPumpRunning() [L265] COND TRUE \read(tmp___0) [L267] CALL __automaton_fail() [L247] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 43.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1437 SDtfs, 3500 SDslu, 1976 SDs, 0 SdLazy, 10951 SolverSat, 2498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 637 GetRequests, 413 SyntacticMatches, 12 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 1124 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1337 NumberOfCodeBlocks, 1337 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1138 ConstructedInterpolants, 0 QuantifiedInterpolants, 455757 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 211/247 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...