/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:00:08,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:00:08,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:00:08,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:00:08,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:00:08,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:00:08,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:00:08,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:00:08,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:00:08,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:00:08,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:00:08,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:00:08,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:00:08,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:00:08,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:00:08,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:00:08,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:00:08,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:00:08,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:00:08,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:00:08,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:00:08,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:00:08,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:00:08,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:00:08,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:00:08,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:00:08,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:00:08,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:00:08,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:00:08,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:00:08,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:00:08,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:00:08,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:00:08,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:00:08,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:00:08,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:00:08,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:00:08,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:00:08,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:00:08,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:00:08,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:00:08,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:00:08,701 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:00:08,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:00:08,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:00:08,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:00:08,704 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:00:08,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:00:08,705 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:00:08,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:00:08,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:00:08,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:00:08,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:00:08,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:00:08,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:00:08,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:00:08,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:00:08,706 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:00:08,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:00:08,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:00:08,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:00:08,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:00:08,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:00:08,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:08,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:00:08,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:00:08,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:00:08,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:00:08,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:00:08,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:00:08,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:00:08,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:00:08,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:00:08,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:00:09,000 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:00:09,000 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:00:09,001 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-11-06 22:00:09,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337f5279e/ad155cac75404ca6a69a08775b589ed5/FLAG26408c11f [2019-11-06 22:00:09,568 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:00:09,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2019-11-06 22:00:09,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337f5279e/ad155cac75404ca6a69a08775b589ed5/FLAG26408c11f [2019-11-06 22:00:09,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337f5279e/ad155cac75404ca6a69a08775b589ed5 [2019-11-06 22:00:09,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:00:09,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:00:09,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:09,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:00:09,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:00:09,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:09" (1/1) ... [2019-11-06 22:00:09,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2755fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:09, skipping insertion in model container [2019-11-06 22:00:09,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:00:09" (1/1) ... [2019-11-06 22:00:09,922 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:00:09,974 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:00:10,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:10,462 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:00:10,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:00:10,595 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:00:10,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10 WrapperNode [2019-11-06 22:00:10,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:00:10,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:00:10,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:00:10,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:00:10,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2019-11-06 22:00:10,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2019-11-06 22:00:10,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2019-11-06 22:00:10,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2019-11-06 22:00:10,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2019-11-06 22:00:10,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2019-11-06 22:00:10,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... [2019-11-06 22:00:10,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:00:10,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:00:10,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:00:10,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:00:10,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:00:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:00:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:00:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:00:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:00:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:00:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:00:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:00:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:00:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:00:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:00:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:00:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-11-06 22:00:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:00:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:00:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:00:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:00:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:00:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:00:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:00:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:00:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:00:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:00:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:00:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:00:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:00:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:00:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:00:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:00:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:00:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:00:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:00:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:00:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:00:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:00:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:00:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:00:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:00:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:00:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:00:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:00:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:00:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:00:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:00:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:00:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:00:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:00:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:00:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:00:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:00:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:00:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:00:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:00:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:00:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:00:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:00:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:00:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:00:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:00:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-11-06 22:00:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:00:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:00:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:00:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-11-06 22:00:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:00:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:00:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:00:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:00:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:00:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:00:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:00:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:00:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:00:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:00:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:00:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:00:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:00:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:00:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:00:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:00:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:00:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:00:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:00:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:00:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:00:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:00:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:00:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:00:11,779 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:00:11,780 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:00:11,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:11 BoogieIcfgContainer [2019-11-06 22:00:11,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:00:11,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:00:11,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:00:11,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:00:11,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:00:09" (1/3) ... [2019-11-06 22:00:11,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b10339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:11, skipping insertion in model container [2019-11-06 22:00:11,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:00:10" (2/3) ... [2019-11-06 22:00:11,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b10339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:00:11, skipping insertion in model container [2019-11-06 22:00:11,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:00:11" (3/3) ... [2019-11-06 22:00:11,793 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2019-11-06 22:00:11,803 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:00:11,814 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:00:11,825 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:00:11,862 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:00:11,863 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:00:11,863 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:00:11,863 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:00:11,863 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:00:11,864 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:00:11,864 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:00:11,864 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:00:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-11-06 22:00:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:00:11,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:11,906 INFO L410 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] [2019-11-06 22:00:11,908 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:11,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:11,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2019-11-06 22:00:11,923 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:11,923 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818541760] [2019-11-06 22:00:11,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,657 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:12,727 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818541760] [2019-11-06 22:00:12,728 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:12,729 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:00:12,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542814255] [2019-11-06 22:00:12,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:00:12,740 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:12,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:00:12,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:12,766 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2019-11-06 22:00:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:13,939 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2019-11-06 22:00:13,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:00:13,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-11-06 22:00:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:13,975 INFO L225 Difference]: With dead ends: 296 [2019-11-06 22:00:13,975 INFO L226 Difference]: Without dead ends: 160 [2019-11-06 22:00:13,983 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:00:14,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-11-06 22:00:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2019-11-06 22:00:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-11-06 22:00:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2019-11-06 22:00:14,108 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2019-11-06 22:00:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:14,108 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2019-11-06 22:00:14,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:00:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2019-11-06 22:00:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:00:14,123 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:14,123 INFO L410 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] [2019-11-06 22:00:14,123 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:14,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:14,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2019-11-06 22:00:14,124 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:14,124 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343318906] [2019-11-06 22:00:14,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,513 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:14,581 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343318906] [2019-11-06 22:00:14,581 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:14,581 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:00:14,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414206495] [2019-11-06 22:00:14,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:00:14,587 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:14,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:00:14,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:00:14,587 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2019-11-06 22:00:15,025 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:15,843 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2019-11-06 22:00:15,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:00:15,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-11-06 22:00:15,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:15,847 INFO L225 Difference]: With dead ends: 225 [2019-11-06 22:00:15,847 INFO L226 Difference]: Without dead ends: 144 [2019-11-06 22:00:15,849 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:00:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-06 22:00:15,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2019-11-06 22:00:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-11-06 22:00:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2019-11-06 22:00:15,881 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2019-11-06 22:00:15,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:15,881 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2019-11-06 22:00:15,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:00:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2019-11-06 22:00:15,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 22:00:15,883 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:15,884 INFO L410 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] [2019-11-06 22:00:15,884 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:15,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2019-11-06 22:00:15,885 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:15,885 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708176909] [2019-11-06 22:00:15,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,236 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:16,326 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708176909] [2019-11-06 22:00:16,327 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:16,327 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:16,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394756043] [2019-11-06 22:00:16,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:16,328 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:16,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:16,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:16,329 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2019-11-06 22:00:16,753 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:17,098 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:17,400 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:17,666 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:18,828 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2019-11-06 22:00:18,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:00:18,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-11-06 22:00:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:18,833 INFO L225 Difference]: With dead ends: 238 [2019-11-06 22:00:18,833 INFO L226 Difference]: Without dead ends: 144 [2019-11-06 22:00:18,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-06 22:00:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2019-11-06 22:00:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-11-06 22:00:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2019-11-06 22:00:18,866 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2019-11-06 22:00:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:18,866 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2019-11-06 22:00:18,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2019-11-06 22:00:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-11-06 22:00:18,868 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:18,868 INFO L410 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] [2019-11-06 22:00:18,869 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:18,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2019-11-06 22:00:18,869 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:18,870 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400553876] [2019-11-06 22:00:18,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,171 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:19,236 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400553876] [2019-11-06 22:00:19,237 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:19,237 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:00:19,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855804517] [2019-11-06 22:00:19,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:00:19,238 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:19,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:00:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:00:19,238 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2019-11-06 22:00:19,610 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:20,760 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:21,411 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2019-11-06 22:00:21,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:00:21,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2019-11-06 22:00:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:21,415 INFO L225 Difference]: With dead ends: 338 [2019-11-06 22:00:21,415 INFO L226 Difference]: Without dead ends: 244 [2019-11-06 22:00:21,416 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-11-06 22:00:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2019-11-06 22:00:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-11-06 22:00:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2019-11-06 22:00:21,459 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2019-11-06 22:00:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:21,459 INFO L462 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2019-11-06 22:00:21,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:00:21,459 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2019-11-06 22:00:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-06 22:00:21,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:21,461 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:21,461 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:21,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2019-11-06 22:00:21,462 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:21,462 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029543284] [2019-11-06 22:00:21,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,752 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:21,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029543284] [2019-11-06 22:00:21,829 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:21,829 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:21,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542094681] [2019-11-06 22:00:21,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:21,830 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:21,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:21,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:21,831 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2019-11-06 22:00:22,325 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:23,849 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:24,137 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:24,398 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:24,652 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:25,375 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2019-11-06 22:00:25,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:00:25,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2019-11-06 22:00:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:25,379 INFO L225 Difference]: With dead ends: 555 [2019-11-06 22:00:25,380 INFO L226 Difference]: Without dead ends: 378 [2019-11-06 22:00:25,381 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:00:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-11-06 22:00:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2019-11-06 22:00:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-11-06 22:00:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2019-11-06 22:00:25,453 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2019-11-06 22:00:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:25,454 INFO L462 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2019-11-06 22:00:25,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2019-11-06 22:00:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-06 22:00:25,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:25,456 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:25,456 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2019-11-06 22:00:25,457 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:25,457 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044992428] [2019-11-06 22:00:25,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,773 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:25,881 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044992428] [2019-11-06 22:00:25,881 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:25,881 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 22:00:25,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451769410] [2019-11-06 22:00:25,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:00:25,882 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:25,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:00:25,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:00:25,883 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 10 states. [2019-11-06 22:00:26,347 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:27,923 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:28,216 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:28,507 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:28,785 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:29,109 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:30,057 INFO L93 Difference]: Finished difference Result 743 states and 934 transitions. [2019-11-06 22:00:30,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:00:30,057 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2019-11-06 22:00:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:30,067 INFO L225 Difference]: With dead ends: 743 [2019-11-06 22:00:30,067 INFO L226 Difference]: Without dead ends: 555 [2019-11-06 22:00:30,071 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:00:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2019-11-06 22:00:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 483. [2019-11-06 22:00:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-11-06 22:00:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 568 transitions. [2019-11-06 22:00:30,204 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 568 transitions. Word has length 84 [2019-11-06 22:00:30,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:30,204 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 568 transitions. [2019-11-06 22:00:30,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 22:00:30,205 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 568 transitions. [2019-11-06 22:00:30,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-06 22:00:30,206 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:30,206 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:30,207 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:30,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2019-11-06 22:00:30,207 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:30,207 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203791055] [2019-11-06 22:00:30,208 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,470 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:30,604 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203791055] [2019-11-06 22:00:30,605 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:30,605 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:00:30,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232140756] [2019-11-06 22:00:30,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:30,606 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:30,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:30,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:00:30,607 INFO L87 Difference]: Start difference. First operand 483 states and 568 transitions. Second operand 8 states. [2019-11-06 22:00:31,492 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:31,748 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:32,002 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:33,091 INFO L93 Difference]: Finished difference Result 883 states and 1083 transitions. [2019-11-06 22:00:33,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 22:00:33,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-11-06 22:00:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:33,095 INFO L225 Difference]: With dead ends: 883 [2019-11-06 22:00:33,096 INFO L226 Difference]: Without dead ends: 543 [2019-11-06 22:00:33,097 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-11-06 22:00:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 483. [2019-11-06 22:00:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-11-06 22:00:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 567 transitions. [2019-11-06 22:00:33,189 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 567 transitions. Word has length 84 [2019-11-06 22:00:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:33,189 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 567 transitions. [2019-11-06 22:00:33,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 567 transitions. [2019-11-06 22:00:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-06 22:00:33,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:33,191 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:33,192 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:33,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:33,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2019-11-06 22:00:33,192 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:33,192 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708460272] [2019-11-06 22:00:33,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,469 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:33,624 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708460272] [2019-11-06 22:00:33,625 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:33,625 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:00:33,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722749838] [2019-11-06 22:00:33,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:00:33,631 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:33,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:00:33,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:00:33,632 INFO L87 Difference]: Start difference. First operand 483 states and 567 transitions. Second operand 12 states. [2019-11-06 22:00:34,497 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:34,766 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:35,020 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:35,786 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:36,062 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:00:36,356 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:36,654 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:37,863 INFO L93 Difference]: Finished difference Result 1007 states and 1237 transitions. [2019-11-06 22:00:37,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 22:00:37,863 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-11-06 22:00:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:37,868 INFO L225 Difference]: With dead ends: 1007 [2019-11-06 22:00:37,869 INFO L226 Difference]: Without dead ends: 548 [2019-11-06 22:00:37,871 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-06 22:00:37,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-11-06 22:00:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 490. [2019-11-06 22:00:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2019-11-06 22:00:37,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 574 transitions. [2019-11-06 22:00:37,966 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 574 transitions. Word has length 84 [2019-11-06 22:00:37,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:37,967 INFO L462 AbstractCegarLoop]: Abstraction has 490 states and 574 transitions. [2019-11-06 22:00:37,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:00:37,967 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 574 transitions. [2019-11-06 22:00:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-11-06 22:00:37,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:37,973 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:37,973 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:37,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:37,973 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2019-11-06 22:00:37,974 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:37,974 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029787748] [2019-11-06 22:00:37,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,260 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:00:38,469 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029787748] [2019-11-06 22:00:38,470 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082815350] [2019-11-06 22:00:38,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:00:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:38,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-06 22:00:38,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:00:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:00:38,833 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:00:38,833 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-11-06 22:00:38,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867122725] [2019-11-06 22:00:38,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:00:38,835 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:38,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:00:38,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:00:38,836 INFO L87 Difference]: Start difference. First operand 490 states and 574 transitions. Second operand 8 states. [2019-11-06 22:00:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:39,409 INFO L93 Difference]: Finished difference Result 1385 states and 1656 transitions. [2019-11-06 22:00:39,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:00:39,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2019-11-06 22:00:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:39,420 INFO L225 Difference]: With dead ends: 1385 [2019-11-06 22:00:39,420 INFO L226 Difference]: Without dead ends: 919 [2019-11-06 22:00:39,423 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-11-06 22:00:39,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-11-06 22:00:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 916. [2019-11-06 22:00:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2019-11-06 22:00:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1074 transitions. [2019-11-06 22:00:39,668 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1074 transitions. Word has length 96 [2019-11-06 22:00:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:39,669 INFO L462 AbstractCegarLoop]: Abstraction has 916 states and 1074 transitions. [2019-11-06 22:00:39,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:00:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1074 transitions. [2019-11-06 22:00:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-06 22:00:39,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:39,674 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:39,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:00:39,880 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:39,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:39,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2019-11-06 22:00:39,880 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:39,880 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612016005] [2019-11-06 22:00:39,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,283 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:00:40,417 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612016005] [2019-11-06 22:00:40,417 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:40,418 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-11-06 22:00:40,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391956592] [2019-11-06 22:00:40,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-06 22:00:40,418 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:40,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 22:00:40,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:00:40,419 INFO L87 Difference]: Start difference. First operand 916 states and 1074 transitions. Second operand 14 states. [2019-11-06 22:00:41,449 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:41,718 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:41,986 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:00:42,680 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:43,631 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:00:44,033 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:44,720 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:00:45,024 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:45,345 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:00:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:00:47,350 INFO L93 Difference]: Finished difference Result 1953 states and 2460 transitions. [2019-11-06 22:00:47,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-06 22:00:47,351 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2019-11-06 22:00:47,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:00:47,358 INFO L225 Difference]: With dead ends: 1953 [2019-11-06 22:00:47,358 INFO L226 Difference]: Without dead ends: 1061 [2019-11-06 22:00:47,361 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2019-11-06 22:00:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2019-11-06 22:00:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 850. [2019-11-06 22:00:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2019-11-06 22:00:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 982 transitions. [2019-11-06 22:00:47,542 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 982 transitions. Word has length 100 [2019-11-06 22:00:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:00:47,542 INFO L462 AbstractCegarLoop]: Abstraction has 850 states and 982 transitions. [2019-11-06 22:00:47,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-06 22:00:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 982 transitions. [2019-11-06 22:00:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-11-06 22:00:47,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:00:47,546 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:00:47,547 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:00:47,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:00:47,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2019-11-06 22:00:47,548 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:00:47,548 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512988787] [2019-11-06 22:00:47,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:00:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,887 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:00:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:00:48,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:00:48,041 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512988787] [2019-11-06 22:00:48,041 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:00:48,041 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-11-06 22:00:48,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58096185] [2019-11-06 22:00:48,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-06 22:00:48,042 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:00:48,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-06 22:00:48,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:00:48,043 INFO L87 Difference]: Start difference. First operand 850 states and 982 transitions. Second operand 13 states.