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_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:36:42,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:36:42,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:36:42,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:36:42,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:36:42,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:36:42,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:36:42,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:36:42,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:36:42,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:36:42,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:36:42,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:36:42,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:36:42,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:36:42,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:36:42,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:36:42,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:36:42,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:36:42,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:36:42,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:36:42,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:36:42,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:36:42,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:36:42,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:36:42,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:36:42,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:36:42,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:36:42,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:36:42,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:36:42,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:36:42,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:36:42,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:36:42,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:36:42,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:36:42,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:36:42,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:36:42,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:36:42,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:36:42,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:36:42,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:36:42,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:36:42,676 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 [2019-10-13 19:36:42,700 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:36:42,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:36:42,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:36:42,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:36:42,703 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:36:42,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:36:42,704 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:36:42,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:36:42,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:36:42,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:36:42,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:36:42,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:36:42,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:36:42,707 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:36:42,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:36:42,707 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:36:42,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:36:42,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:36:42,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:36:42,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:36:42,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:36:42,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:36:42,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:36:42,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:36:42,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:36:42,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:36:42,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:36:42,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:36:42,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:36:43,004 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:36:43,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:36:43,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:36:43,022 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:36:43,023 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:36:43,024 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-10-13 19:36:43,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe475f10e/4f76697360324653a095f71794942b84/FLAG084359147 [2019-10-13 19:36:43,614 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:36:43,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2019-10-13 19:36:43,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe475f10e/4f76697360324653a095f71794942b84/FLAG084359147 [2019-10-13 19:36:43,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe475f10e/4f76697360324653a095f71794942b84 [2019-10-13 19:36:43,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:36:43,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:36:43,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:43,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:36:43,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:36:43,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:43" (1/1) ... [2019-10-13 19:36:43,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:43, skipping insertion in model container [2019-10-13 19:36:43,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:43" (1/1) ... [2019-10-13 19:36:43,960 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:36:44,024 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:36:44,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:44,535 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:36:44,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:44,687 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:36:44,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44 WrapperNode [2019-10-13 19:36:44,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:44,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:36:44,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:36:44,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:36:44,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (1/1) ... [2019-10-13 19:36:44,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (1/1) ... [2019-10-13 19:36:44,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (1/1) ... [2019-10-13 19:36:44,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (1/1) ... [2019-10-13 19:36:44,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (1/1) ... [2019-10-13 19:36:44,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (1/1) ... [2019-10-13 19:36:44,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (1/1) ... [2019-10-13 19:36:44,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:36:44,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:36:44,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:36:44,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:36:44,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (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 [2019-10-13 19:36:44,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:36:44,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:36:44,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:44,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:36:44,854 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:36:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:36:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:36:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:36:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:36:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:36:44,855 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:36:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:36:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:36:44,856 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:36:44,857 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:36:44,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:36:44,857 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:36:44,857 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:36:44,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:36:44,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:36:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:36:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:36:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:36:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:36:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:36:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:36:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:36:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:36:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:36:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:36:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:36:44,859 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:36:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:36:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:36:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:36:44,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:36:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:36:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:36:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:36:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:36:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:36:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:36:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:36:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:36:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:36:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:36:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:36:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:36:44,862 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:36:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:36:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:36:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:36:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:36:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:36:44,863 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:36:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:36:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:36:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:36:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:36:44,864 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:36:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:36:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:36:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:36:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:36:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:36:44,865 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:36:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:36:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:36:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:36:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:36:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:36:44,866 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:36:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:36:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:36:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:36:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:36:44,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:36:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:36:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:36:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:36:44,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:36:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:36:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:36:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:36:44,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:36:46,150 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:36:46,150 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:36:46,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:46 BoogieIcfgContainer [2019-10-13 19:36:46,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:36:46,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:36:46,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:36:46,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:36:46,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:43" (1/3) ... [2019-10-13 19:36:46,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0fa5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:46, skipping insertion in model container [2019-10-13 19:36:46,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:44" (2/3) ... [2019-10-13 19:36:46,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0fa5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:46, skipping insertion in model container [2019-10-13 19:36:46,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:46" (3/3) ... [2019-10-13 19:36:46,162 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2019-10-13 19:36:46,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:36:46,182 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:36:46,193 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:36:46,228 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:36:46,228 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:36:46,228 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:36:46,228 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:36:46,228 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:36:46,228 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:36:46,229 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:36:46,229 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:36:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-10-13 19:36:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:36:46,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:46,262 INFO L380 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] [2019-10-13 19:36:46,264 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:46,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:46,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2019-10-13 19:36:46,278 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:46,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169921788] [2019-10-13 19:36:46,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:46,279 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:46,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:46,965 WARN L191 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:36:47,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169921788] [2019-10-13 19:36:47,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:47,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:36:47,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765797583] [2019-10-13 19:36:47,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:36:47,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:47,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:36:47,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:47,146 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2019-10-13 19:36:48,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:48,429 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2019-10-13 19:36:48,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:36:48,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-13 19:36:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:48,459 INFO L225 Difference]: With dead ends: 306 [2019-10-13 19:36:48,460 INFO L226 Difference]: Without dead ends: 170 [2019-10-13 19:36:48,465 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-13 19:36:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2019-10-13 19:36:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-13 19:36:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-10-13 19:36:48,554 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2019-10-13 19:36:48,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:48,555 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-10-13 19:36:48,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:36:48,556 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-10-13 19:36:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:36:48,566 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:48,566 INFO L380 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] [2019-10-13 19:36:48,567 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:48,568 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2019-10-13 19:36:48,568 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:48,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430231483] [2019-10-13 19:36:48,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:48,569 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:48,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,962 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:36:49,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430231483] [2019-10-13 19:36:49,036 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:49,036 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:36:49,036 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652517872] [2019-10-13 19:36:49,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:36:49,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:49,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:36:49,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:36:49,039 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2019-10-13 19:36:49,508 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:50,407 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2019-10-13 19:36:50,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:36:50,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-13 19:36:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:50,410 INFO L225 Difference]: With dead ends: 247 [2019-10-13 19:36:50,410 INFO L226 Difference]: Without dead ends: 160 [2019-10-13 19:36:50,412 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:36:50,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-13 19:36:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-10-13 19:36:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-13 19:36:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2019-10-13 19:36:50,448 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2019-10-13 19:36:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:50,448 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2019-10-13 19:36:50,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:36:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2019-10-13 19:36:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:36:50,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:50,450 INFO L380 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] [2019-10-13 19:36:50,451 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2019-10-13 19:36:50,451 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:50,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882652930] [2019-10-13 19:36:50,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:50,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:50,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,789 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:36:50,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882652930] [2019-10-13 19:36:50,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:50,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:50,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433737847] [2019-10-13 19:36:50,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:50,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:50,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:50,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:50,896 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2019-10-13 19:36:51,269 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:51,636 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:36:51,935 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:52,222 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:53,582 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2019-10-13 19:36:53,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:36:53,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-13 19:36:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:53,586 INFO L225 Difference]: With dead ends: 260 [2019-10-13 19:36:53,586 INFO L226 Difference]: Without dead ends: 160 [2019-10-13 19:36:53,588 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:36:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2019-10-13 19:36:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2019-10-13 19:36:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-13 19:36:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2019-10-13 19:36:53,645 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2019-10-13 19:36:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:53,646 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2019-10-13 19:36:53,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:36:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2019-10-13 19:36:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:36:53,647 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:53,647 INFO L380 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] [2019-10-13 19:36:53,648 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2019-10-13 19:36:53,648 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:53,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499729094] [2019-10-13 19:36:53,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:53,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:53,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:53,958 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:36:54,047 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499729094] [2019-10-13 19:36:54,047 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:54,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:36:54,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572346969] [2019-10-13 19:36:54,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:36:54,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:54,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:36:54,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:36:54,049 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2019-10-13 19:36:54,431 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:55,773 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:56,553 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2019-10-13 19:36:56,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:36:56,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-10-13 19:36:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:56,558 INFO L225 Difference]: With dead ends: 359 [2019-10-13 19:36:56,558 INFO L226 Difference]: Without dead ends: 259 [2019-10-13 19:36:56,559 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:36:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2019-10-13 19:36:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2019-10-13 19:36:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2019-10-13 19:36:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2019-10-13 19:36:56,636 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2019-10-13 19:36:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:56,637 INFO L462 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2019-10-13 19:36:56,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:36:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2019-10-13 19:36:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:36:56,640 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:56,640 INFO L380 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] [2019-10-13 19:36:56,641 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:56,642 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2019-10-13 19:36:56,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:56,642 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812059752] [2019-10-13 19:36:56,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:56,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:56,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,970 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:36:57,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812059752] [2019-10-13 19:36:57,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:57,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:57,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518498736] [2019-10-13 19:36:57,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:57,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:57,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:57,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:57,080 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2019-10-13 19:36:57,507 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:58,827 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:59,122 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:59,387 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:59,638 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:00,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:00,970 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2019-10-13 19:37:00,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:37:00,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-10-13 19:37:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:00,978 INFO L225 Difference]: With dead ends: 626 [2019-10-13 19:37:00,978 INFO L226 Difference]: Without dead ends: 444 [2019-10-13 19:37:00,979 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:37:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-13 19:37:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2019-10-13 19:37:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2019-10-13 19:37:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2019-10-13 19:37:01,052 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2019-10-13 19:37:01,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:01,053 INFO L462 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2019-10-13 19:37:01,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2019-10-13 19:37:01,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:37:01,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:01,055 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:01,055 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:01,056 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2019-10-13 19:37:01,056 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:01,056 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350754601] [2019-10-13 19:37:01,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:01,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:01,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,425 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:01,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350754601] [2019-10-13 19:37:01,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:01,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:01,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673214935] [2019-10-13 19:37:01,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:01,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:01,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:01,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:01,556 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2019-10-13 19:37:02,093 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:03,392 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:03,668 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:03,939 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:04,237 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:05,191 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2019-10-13 19:37:05,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:37:05,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-13 19:37:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:05,197 INFO L225 Difference]: With dead ends: 822 [2019-10-13 19:37:05,197 INFO L226 Difference]: Without dead ends: 482 [2019-10-13 19:37:05,198 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:37:05,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-10-13 19:37:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2019-10-13 19:37:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2019-10-13 19:37:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2019-10-13 19:37:05,272 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2019-10-13 19:37:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:05,273 INFO L462 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2019-10-13 19:37:05,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2019-10-13 19:37:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:37:05,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:05,275 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:05,275 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:05,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:05,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2019-10-13 19:37:05,276 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:05,276 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419586451] [2019-10-13 19:37:05,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:05,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:05,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,533 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:05,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419586451] [2019-10-13 19:37:05,674 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:05,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:05,674 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120972932] [2019-10-13 19:37:05,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:05,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:05,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:05,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:05,676 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2019-10-13 19:37:06,772 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:07,047 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:37:07,314 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:07,566 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:08,751 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2019-10-13 19:37:08,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:08,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-13 19:37:08,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:08,758 INFO L225 Difference]: With dead ends: 825 [2019-10-13 19:37:08,759 INFO L226 Difference]: Without dead ends: 486 [2019-10-13 19:37:08,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:37:08,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-10-13 19:37:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2019-10-13 19:37:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2019-10-13 19:37:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2019-10-13 19:37:08,835 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2019-10-13 19:37:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:08,835 INFO L462 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2019-10-13 19:37:08,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2019-10-13 19:37:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:37:08,837 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:08,837 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:08,838 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2019-10-13 19:37:08,838 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:08,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432211403] [2019-10-13 19:37:08,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:08,839 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:08,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,121 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:09,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432211403] [2019-10-13 19:37:09,282 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:09,283 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:37:09,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018764250] [2019-10-13 19:37:09,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:37:09,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:37:09,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:09,284 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2019-10-13 19:37:09,899 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:10,161 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:10,431 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:11,225 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:11,494 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:11,760 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:13,178 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2019-10-13 19:37:13,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:13,179 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-13 19:37:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:13,182 INFO L225 Difference]: With dead ends: 849 [2019-10-13 19:37:13,183 INFO L226 Difference]: Without dead ends: 500 [2019-10-13 19:37:13,184 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:37:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-13 19:37:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2019-10-13 19:37:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-10-13 19:37:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2019-10-13 19:37:13,267 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2019-10-13 19:37:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:13,268 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2019-10-13 19:37:13,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2019-10-13 19:37:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:37:13,269 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:13,270 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:13,270 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:13,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:13,270 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2019-10-13 19:37:13,270 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:13,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863652117] [2019-10-13 19:37:13,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:13,271 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:13,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,536 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:13,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863652117] [2019-10-13 19:37:13,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:13,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:13,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556498287] [2019-10-13 19:37:13,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:13,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:13,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:13,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:13,672 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2019-10-13 19:37:14,074 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:14,666 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:17,481 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2019-10-13 19:37:17,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:37:17,481 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-13 19:37:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:17,488 INFO L225 Difference]: With dead ends: 1197 [2019-10-13 19:37:17,488 INFO L226 Difference]: Without dead ends: 840 [2019-10-13 19:37:17,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:37:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2019-10-13 19:37:17,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2019-10-13 19:37:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2019-10-13 19:37:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2019-10-13 19:37:17,618 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2019-10-13 19:37:17,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:17,618 INFO L462 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2019-10-13 19:37:17,618 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:17,618 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2019-10-13 19:37:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 19:37:17,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:17,620 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:17,621 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:17,621 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2019-10-13 19:37:17,621 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:17,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240481885] [2019-10-13 19:37:17,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:17,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:17,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,932 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:18,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240481885] [2019-10-13 19:37:18,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:18,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:18,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601551643] [2019-10-13 19:37:18,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:18,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:18,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:18,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:18,033 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2019-10-13 19:37:18,467 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:21,089 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2019-10-13 19:37:21,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 19:37:21,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-13 19:37:21,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:21,099 INFO L225 Difference]: With dead ends: 1377 [2019-10-13 19:37:21,099 INFO L226 Difference]: Without dead ends: 1374 [2019-10-13 19:37:21,101 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:37:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2019-10-13 19:37:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2019-10-13 19:37:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2019-10-13 19:37:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2019-10-13 19:37:21,285 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2019-10-13 19:37:21,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:21,286 INFO L462 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2019-10-13 19:37:21,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2019-10-13 19:37:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:37:21,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:21,290 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:21,291 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:21,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:21,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2019-10-13 19:37:21,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:21,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108274973] [2019-10-13 19:37:21,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat