/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:33:45,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:33:45,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:33:45,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:33:45,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:33:45,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:33:45,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:33:45,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:33:45,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:33:45,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:33:45,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:33:45,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:33:45,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:33:45,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:33:45,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:33:45,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:33:45,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:33:45,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:33:45,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:33:45,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:33:45,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:33:45,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:33:45,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:33:45,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:33:45,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:33:45,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:33:45,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:33:45,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:33:45,725 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:33:45,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:33:45,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:33:45,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:33:45,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:33:45,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:33:45,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:33:45,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:33:45,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:33:45,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:33:45,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:33:45,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:33:45,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:33:45,733 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:33:45,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:33:45,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:33:45,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:33:45,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:33:45,757 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:33:45,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:33:45,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:33:45,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:33:45,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:33:45,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:33:45,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:33:45,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:33:45,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:33:45,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:33:45,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:33:45,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:33:45,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:33:45,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:33:45,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:33:45,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:33:45,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:33:45,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:33:45,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:33:45,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:33:45,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:33:45,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:33:45,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:33:45,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:33:45,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:33:45,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:33:46,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:33:46,101 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:33:46,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:33:46,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:33:46,110 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:33:46,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 22:33:46,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/955dd9ee9/6718310e7edd4055b7983c98279b3c24/FLAGf0a81a818 [2020-08-18 22:33:46,738 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:33:46,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-18 22:33:46,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/955dd9ee9/6718310e7edd4055b7983c98279b3c24/FLAGf0a81a818 [2020-08-18 22:33:46,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/955dd9ee9/6718310e7edd4055b7983c98279b3c24 [2020-08-18 22:33:46,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:33:46,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:33:46,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:46,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:33:46,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:33:46,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:33:46" (1/1) ... [2020-08-18 22:33:46,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1467e6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:46, skipping insertion in model container [2020-08-18 22:33:46,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:33:46" (1/1) ... [2020-08-18 22:33:46,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:33:47,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:33:47,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:47,537 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:33:47,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:33:47,651 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:33:47,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47 WrapperNode [2020-08-18 22:33:47,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:33:47,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:33:47,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:33:47,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:33:47,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... [2020-08-18 22:33:47,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... [2020-08-18 22:33:47,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... [2020-08-18 22:33:47,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... [2020-08-18 22:33:47,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... [2020-08-18 22:33:47,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... [2020-08-18 22:33:47,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... [2020-08-18 22:33:47,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:33:47,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:33:47,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:33:47,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:33:47,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:33:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:33:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:33:47,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 22:33:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 22:33:47,853 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 22:33:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 22:33:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 22:33:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 22:33:47,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 22:33:47,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 22:33:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 22:33:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 22:33:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 22:33:47,856 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 22:33:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:33:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 22:33:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 22:33:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 22:33:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 22:33:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 22:33:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:47,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 22:33:47,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 22:33:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 22:33:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 22:33:47,862 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 22:33:47,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 22:33:47,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:33:47,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 22:33:47,863 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 22:33:47,863 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 22:33:47,863 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 22:33:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 22:33:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 22:33:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 22:33:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 22:33:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 22:33:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 22:33:47,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:33:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:33:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 22:33:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 22:33:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 22:33:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 22:33:47,868 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 22:33:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 22:33:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 22:33:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 22:33:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 22:33:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:33:47,869 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 22:33:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 22:33:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 22:33:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 22:33:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 22:33:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 22:33:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 22:33:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 22:33:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 22:33:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 22:33:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:33:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 22:33:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 22:33:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 22:33:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 22:33:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 22:33:47,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:33:47,874 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:33:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 22:33:47,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:33:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:33:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:33:47,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:33:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 22:33:47,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:33:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 22:33:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 22:33:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:33:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 22:33:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 22:33:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 22:33:47,878 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 22:33:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 22:33:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 22:33:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 22:33:47,879 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 22:33:47,880 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 22:33:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 22:33:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 22:33:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 22:33:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 22:33:47,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:33:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:33:47,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:33:48,967 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:33:48,968 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 22:33:48,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:48 BoogieIcfgContainer [2020-08-18 22:33:48,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:33:48,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:33:48,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:33:48,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:33:48,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:33:46" (1/3) ... [2020-08-18 22:33:48,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5991b41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:48, skipping insertion in model container [2020-08-18 22:33:48,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:33:47" (2/3) ... [2020-08-18 22:33:48,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5991b41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:33:48, skipping insertion in model container [2020-08-18 22:33:48,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:33:48" (3/3) ... [2020-08-18 22:33:48,983 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-18 22:33:48,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:33:49,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:33:49,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:33:49,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:33:49,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:33:49,041 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:33:49,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:33:49,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:33:49,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:33:49,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:33:49,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:33:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-18 22:33:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 22:33:49,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:49,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:49,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-18 22:33:49,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:49,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815701340] [2020-08-18 22:33:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,699 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:49,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 22:33:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:33:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:33:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:49,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815701340] [2020-08-18 22:33:49,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:49,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:33:49,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517855133] [2020-08-18 22:33:49,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:33:49,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:49,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:33:49,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:33:49,858 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-18 22:33:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:51,146 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-18 22:33:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:33:51,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 22:33:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:51,165 INFO L225 Difference]: With dead ends: 350 [2020-08-18 22:33:51,165 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 22:33:51,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:33:51,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 22:33:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-18 22:33:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-18 22:33:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-18 22:33:51,269 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-18 22:33:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:51,270 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-18 22:33:51,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:33:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-18 22:33:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 22:33:51,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:51,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:51,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:33:51,275 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:51,276 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-18 22:33:51,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:51,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933303028] [2020-08-18 22:33:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,616 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:51,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:33:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 22:33:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 22:33:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:51,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933303028] [2020-08-18 22:33:51,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:51,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:33:51,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728256792] [2020-08-18 22:33:51,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:33:51,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:51,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:33:51,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:33:51,673 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-18 22:33:52,057 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:53,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:53,088 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-18 22:33:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:33:53,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 22:33:53,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:53,093 INFO L225 Difference]: With dead ends: 279 [2020-08-18 22:33:53,094 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 22:33:53,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:33:53,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 22:33:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 22:33:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 22:33:53,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-18 22:33:53,170 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-18 22:33:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:53,171 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-18 22:33:53,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:33:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-18 22:33:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 22:33:53,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:53,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:53,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:33:53,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:53,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:53,183 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-18 22:33:53,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:53,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774615086] [2020-08-18 22:33:53,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,623 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:53,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 22:33:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:33:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:33:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:53,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774615086] [2020-08-18 22:33:53,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:53,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:53,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616020210] [2020-08-18 22:33:53,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:53,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:53,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:53,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:53,809 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-18 22:33:54,132 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:54,450 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:54,689 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:54,929 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:33:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:56,353 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-18 22:33:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:33:56,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 22:33:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:56,357 INFO L225 Difference]: With dead ends: 292 [2020-08-18 22:33:56,357 INFO L226 Difference]: Without dead ends: 172 [2020-08-18 22:33:56,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:33:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-18 22:33:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-18 22:33:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 22:33:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-18 22:33:56,400 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-18 22:33:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:56,400 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-18 22:33:56,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:33:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-18 22:33:56,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-18 22:33:56,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:56,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:56,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:33:56,403 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-18 22:33:56,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:56,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919082009] [2020-08-18 22:33:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,704 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:56,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:33:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:33:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:33:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:33:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 22:33:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 22:33:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 22:33:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:56,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919082009] [2020-08-18 22:33:56,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:56,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 22:33:56,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342778213] [2020-08-18 22:33:56,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 22:33:56,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:56,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 22:33:56,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:33:56,833 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-18 22:33:57,150 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:33:58,403 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:33:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:33:59,237 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-18 22:33:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:33:59,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-18 22:33:59,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:33:59,244 INFO L225 Difference]: With dead ends: 407 [2020-08-18 22:33:59,244 INFO L226 Difference]: Without dead ends: 287 [2020-08-18 22:33:59,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:33:59,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-18 22:33:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-18 22:33:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 22:33:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-18 22:33:59,300 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-18 22:33:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:33:59,300 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-18 22:33:59,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 22:33:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-18 22:33:59,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 22:33:59,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:33:59,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:33:59,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:33:59,303 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:33:59,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:33:59,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-18 22:33:59,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:33:59,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170828620] [2020-08-18 22:33:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:33:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,666 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:33:59,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:33:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:33:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:33:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:33:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:33:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 22:33:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:33:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:33:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:33:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:33:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:33:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 22:33:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 22:33:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 22:33:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:33:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:33:59,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170828620] [2020-08-18 22:33:59,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:33:59,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:33:59,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642055163] [2020-08-18 22:33:59,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:33:59,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:33:59,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:33:59,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:33:59,761 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-18 22:34:00,110 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:01,524 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:01,821 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:02,076 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:02,317 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:03,249 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-18 22:34:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:34:03,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-18 22:34:03,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:03,253 INFO L225 Difference]: With dead ends: 641 [2020-08-18 22:34:03,253 INFO L226 Difference]: Without dead ends: 421 [2020-08-18 22:34:03,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:34:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-18 22:34:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-18 22:34:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-18 22:34:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-18 22:34:03,337 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-18 22:34:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:03,337 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-18 22:34:03,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:34:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-18 22:34:03,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 22:34:03,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:03,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:03,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:34:03,340 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-18 22:34:03,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:03,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072903802] [2020-08-18 22:34:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,602 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:34:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:34:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 22:34:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:34:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:34:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:34:03,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072903802] [2020-08-18 22:34:03,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:34:03,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:34:03,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402760703] [2020-08-18 22:34:03,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:34:03,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:03,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:34:03,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:34:03,756 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-18 22:34:04,139 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:04,702 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:06,365 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:08,504 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-18 22:34:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 22:34:08,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 22:34:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:08,511 INFO L225 Difference]: With dead ends: 980 [2020-08-18 22:34:08,511 INFO L226 Difference]: Without dead ends: 749 [2020-08-18 22:34:08,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 22:34:08,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-18 22:34:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-18 22:34:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 22:34:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-18 22:34:08,680 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-18 22:34:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:08,681 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-18 22:34:08,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:34:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-18 22:34:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 22:34:08,683 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:08,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:08,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:34:08,684 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-18 22:34:08,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:08,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070885366] [2020-08-18 22:34:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:08,939 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:08,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:34:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:34:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 22:34:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:34:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:34:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:34:09,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070885366] [2020-08-18 22:34:09,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:34:09,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 22:34:09,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063691025] [2020-08-18 22:34:09,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:34:09,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:09,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:34:09,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:34:09,113 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-18 22:34:09,935 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:10,266 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:34:10,528 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:11,816 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-18 22:34:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:34:11,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 22:34:11,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:11,822 INFO L225 Difference]: With dead ends: 1250 [2020-08-18 22:34:11,822 INFO L226 Difference]: Without dead ends: 723 [2020-08-18 22:34:11,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:34:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-18 22:34:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-18 22:34:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-18 22:34:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-18 22:34:12,003 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-18 22:34:12,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:12,003 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-18 22:34:12,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:34:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-18 22:34:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 22:34:12,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:12,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:12,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:34:12,006 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:12,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:12,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-18 22:34:12,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:12,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288454042] [2020-08-18 22:34:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,311 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:34:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:34:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 22:34:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 22:34:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 22:34:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:34:12,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288454042] [2020-08-18 22:34:12,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:34:12,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 22:34:12,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669795811] [2020-08-18 22:34:12,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:34:12,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:12,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:34:12,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:34:12,497 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-18 22:34:13,131 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:13,353 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:13,573 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:14,295 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:14,531 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:34:14,803 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:15,030 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:16,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:16,348 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-18 22:34:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 22:34:16,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 22:34:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:16,355 INFO L225 Difference]: With dead ends: 1343 [2020-08-18 22:34:16,355 INFO L226 Difference]: Without dead ends: 689 [2020-08-18 22:34:16,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 22:34:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-18 22:34:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-18 22:34:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 22:34:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-18 22:34:16,485 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-18 22:34:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:16,485 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-18 22:34:16,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:34:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-18 22:34:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 22:34:16,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:16,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:16,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:34:16,490 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-18 22:34:16,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:16,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825526544] [2020-08-18 22:34:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,867 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:34:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:34:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 22:34:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 22:34:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 22:34:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:34:17,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825526544] [2020-08-18 22:34:17,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:34:17,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 22:34:17,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738342030] [2020-08-18 22:34:17,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:34:17,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:17,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:34:17,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:34:17,082 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-18 22:34:17,705 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:17,964 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:18,202 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:19,290 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:19,956 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:20,305 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:34:20,594 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:34:21,436 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:21,757 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:22,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:22,365 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-18 22:34:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 22:34:22,366 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-18 22:34:22,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:22,371 INFO L225 Difference]: With dead ends: 1307 [2020-08-18 22:34:22,371 INFO L226 Difference]: Without dead ends: 682 [2020-08-18 22:34:22,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-18 22:34:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-18 22:34:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-18 22:34:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 22:34:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-18 22:34:22,495 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-18 22:34:22,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:22,497 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-18 22:34:22,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:34:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-18 22:34:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 22:34:22,502 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:22,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:22,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:34:22,503 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:22,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:22,504 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-18 22:34:22,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:22,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291571923] [2020-08-18 22:34:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,762 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:34:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:22,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:34:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 22:34:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 22:34:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:34:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 22:34:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 22:34:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 22:34:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 22:34:22,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291571923] [2020-08-18 22:34:22,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:34:22,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:34:22,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434830259] [2020-08-18 22:34:22,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:34:22,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:22,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:34:22,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:34:22,986 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-18 22:34:23,890 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:24,133 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 22:34:24,387 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:24,621 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:25,632 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-18 22:34:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:34:25,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-18 22:34:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:25,636 INFO L225 Difference]: With dead ends: 1216 [2020-08-18 22:34:25,636 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 22:34:25,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 22:34:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 22:34:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-18 22:34:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-18 22:34:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-18 22:34:25,781 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-18 22:34:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:25,782 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-18 22:34:25,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:34:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-18 22:34:25,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-18 22:34:25,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:25,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:25,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:34:25,785 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:25,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-18 22:34:25,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:25,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934232630] [2020-08-18 22:34:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,090 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:26,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 22:34:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:34:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 22:34:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 22:34:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:34:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 22:34:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 22:34:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 22:34:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-18 22:34:26,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934232630] [2020-08-18 22:34:26,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:34:26,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:34:26,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098120128] [2020-08-18 22:34:26,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:34:26,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:26,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:34:26,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:34:26,286 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-18 22:34:26,853 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:27,097 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:27,327 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:27,943 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:28,199 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:28,423 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:29,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:29,536 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-18 22:34:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 22:34:29,537 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-18 22:34:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:29,540 INFO L225 Difference]: With dead ends: 1124 [2020-08-18 22:34:29,540 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 22:34:29,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 22:34:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 22:34:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-18 22:34:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-18 22:34:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-18 22:34:29,628 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-18 22:34:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:29,628 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-18 22:34:29,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 22:34:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-18 22:34:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 22:34:29,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:29,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:29,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 22:34:29,631 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:29,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-18 22:34:29,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:29,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477547247] [2020-08-18 22:34:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,891 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:29,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:34:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:34:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:34:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 22:34:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 22:34:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:34:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 22:34:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 22:34:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 22:34:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-18 22:34:30,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477547247] [2020-08-18 22:34:30,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:34:30,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 22:34:30,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757275655] [2020-08-18 22:34:30,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:34:30,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:30,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:34:30,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:34:30,066 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-18 22:34:30,569 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:31,178 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:32,148 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:32,667 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 22:34:33,144 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-18 22:34:33,364 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:34:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:35,005 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-18 22:34:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 22:34:35,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-18 22:34:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:35,012 INFO L225 Difference]: With dead ends: 1637 [2020-08-18 22:34:35,013 INFO L226 Difference]: Without dead ends: 1109 [2020-08-18 22:34:35,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-18 22:34:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-18 22:34:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-18 22:34:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-18 22:34:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-18 22:34:35,285 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-18 22:34:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:35,287 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-18 22:34:35,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:34:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-18 22:34:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 22:34:35,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:35,290 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:35,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 22:34:35,291 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:35,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:35,291 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-18 22:34:35,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:35,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439251507] [2020-08-18 22:34:35,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,569 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:34:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 22:34:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 22:34:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:34:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 22:34:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 22:34:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:34:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 22:34:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 22:34:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 22:34:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 22:34:35,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439251507] [2020-08-18 22:34:35,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:34:35,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 22:34:35,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805679875] [2020-08-18 22:34:35,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 22:34:35,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:35,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 22:34:35,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:34:35,790 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-18 22:34:36,409 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:36,649 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:36,876 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:37,444 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:38,539 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:38,868 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:39,134 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:34:39,372 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 22:34:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:34:41,399 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-18 22:34:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 22:34:41,400 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-18 22:34:41,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:34:41,406 INFO L225 Difference]: With dead ends: 2187 [2020-08-18 22:34:41,406 INFO L226 Difference]: Without dead ends: 1134 [2020-08-18 22:34:41,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-18 22:34:41,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-18 22:34:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-18 22:34:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-18 22:34:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-18 22:34:41,593 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-18 22:34:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:34:41,593 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-18 22:34:41,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 22:34:41,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-18 22:34:41,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 22:34:41,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:34:41,596 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:34:41,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 22:34:41,597 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:34:41,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:34:41,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-18 22:34:41,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:34:41,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465220963] [2020-08-18 22:34:41,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:34:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,881 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 22:34:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:34:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:34:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:34:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:34:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 22:34:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 22:34:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 22:34:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 22:34:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 22:34:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:34:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 22:34:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-18 22:34:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:34:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:34:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:34:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 22:34:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 22:34:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 22:34:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:34:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-18 22:34:42,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465220963] [2020-08-18 22:34:42,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:34:42,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 22:34:42,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776066811] [2020-08-18 22:34:42,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 22:34:42,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:34:42,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 22:34:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:34:42,224 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-18 22:34:42,640 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 22:34:43,345 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 22:34:44,473 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 22:34:44,829 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 22:34:45,351 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189