/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:21:33,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:21:33,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:21:33,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:21:33,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:21:33,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:21:33,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:21:33,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:21:33,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:21:33,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:21:33,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:21:33,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:21:33,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:21:33,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:21:33,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:21:33,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:21:33,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:21:33,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:21:33,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:21:33,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:21:33,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:21:33,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:21:33,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:21:33,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:21:33,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:21:33,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:21:33,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:21:33,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:21:33,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:21:33,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:21:33,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:21:33,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:21:33,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:21:33,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:21:33,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:21:33,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:21:33,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:21:33,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:21:33,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:21:33,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:21:33,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:21:33,793 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 15:21:33,840 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:21:33,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:21:33,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:21:33,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:21:33,843 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:21:33,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:21:33,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:21:33,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:21:33,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:21:33,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:21:33,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:21:33,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:21:33,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:21:33,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:21:33,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:21:33,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:21:33,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:21:33,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:21:33,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:21:33,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:21:33,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:21:33,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:21:33,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:21:33,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:21:33,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:21:33,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:21:33,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:21:33,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:21:33,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:21:33,847 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 -> false [2020-08-18 15:21:34,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:21:34,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:21:34,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:21:34,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:21:34,228 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:21:34,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-18 15:21:34,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19c98425/5e409125929c4c6182fd90f551f06dc0/FLAG6cc635592 [2020-08-18 15:21:34,831 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:21:34,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product59.cil.c [2020-08-18 15:21:34,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19c98425/5e409125929c4c6182fd90f551f06dc0/FLAG6cc635592 [2020-08-18 15:21:35,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d19c98425/5e409125929c4c6182fd90f551f06dc0 [2020-08-18 15:21:35,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:21:35,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:21:35,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:21:35,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:21:35,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:21:35,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec48d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35, skipping insertion in model container [2020-08-18 15:21:35,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:21:35,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:21:35,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:21:35,696 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:21:35,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:21:35,828 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:21:35,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35 WrapperNode [2020-08-18 15:21:35,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:21:35,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:21:35,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:21:35,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:21:35,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (1/1) ... [2020-08-18 15:21:35,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:21:35,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:21:35,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:21:35,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:21:35,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (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 15:21:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:21:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:21:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:21:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:21:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:21:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:21:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:21:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:21:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:21:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:21:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:21:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:21:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:21:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:21:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:21:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 15:21:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:21:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:21:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:21:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:21:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:21:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:21:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:21:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:21:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:21:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:21:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:21:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:21:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:21:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:21:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:21:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:21:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:21:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:21:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:21:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:21:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:21:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:21:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:21:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:21:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:21:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:21:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:21:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:21:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:21:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:21:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 15:21:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:21:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:21:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 15:21:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:21:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:21:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:21:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:21:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:21:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:21:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:21:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:21:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:21:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:21:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:21:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:21:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:21:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:21:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:21:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:21:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:21:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:21:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:21:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:21:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:21:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:21:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:21:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:21:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:21:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:21:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:21:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:21:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:21:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:21:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:21:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:21:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:21:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:21:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:21:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:21:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:21:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:21:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:21:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:21:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:21:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:21:37,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:21:37,015 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:21:37,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:21:37 BoogieIcfgContainer [2020-08-18 15:21:37,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:21:37,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:21:37,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:21:37,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:21:37,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:21:35" (1/3) ... [2020-08-18 15:21:37,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa1c365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:21:37, skipping insertion in model container [2020-08-18 15:21:37,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:21:35" (2/3) ... [2020-08-18 15:21:37,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa1c365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:21:37, skipping insertion in model container [2020-08-18 15:21:37,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:21:37" (3/3) ... [2020-08-18 15:21:37,029 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product59.cil.c [2020-08-18 15:21:37,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:21:37,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:21:37,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:21:37,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:21:37,087 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:21:37,087 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:21:37,087 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:21:37,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:21:37,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:21:37,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:21:37,088 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:21:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-18 15:21:37,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 15:21:37,127 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:37,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:37,129 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:37,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:37,135 INFO L82 PathProgramCache]: Analyzing trace with hash -589768967, now seen corresponding path program 1 times [2020-08-18 15:21:37,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:37,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186248109] [2020-08-18 15:21:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,847 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:37,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:21:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:21:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:37,928 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 15:21:37,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186248109] [2020-08-18 15:21:37,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:37,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:21:37,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487458068] [2020-08-18 15:21:37,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:21:37,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:37,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:21:37,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:21:37,956 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 3 states. [2020-08-18 15:21:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:39,336 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2020-08-18 15:21:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:21:39,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 15:21:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:39,362 INFO L225 Difference]: With dead ends: 343 [2020-08-18 15:21:39,363 INFO L226 Difference]: Without dead ends: 185 [2020-08-18 15:21:39,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:21:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-18 15:21:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 149. [2020-08-18 15:21:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 15:21:39,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2020-08-18 15:21:39,526 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 46 [2020-08-18 15:21:39,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:39,527 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2020-08-18 15:21:39,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:21:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2020-08-18 15:21:39,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:21:39,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:39,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:39,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:21:39,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:39,539 INFO L82 PathProgramCache]: Analyzing trace with hash -211037911, now seen corresponding path program 1 times [2020-08-18 15:21:39,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:39,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692556094] [2020-08-18 15:21:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,917 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:39,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:21:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:39,977 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 15:21:39,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692556094] [2020-08-18 15:21:39,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:39,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:21:39,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181821314] [2020-08-18 15:21:39,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:21:39,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:21:39,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:21:39,981 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand 4 states. [2020-08-18 15:21:40,389 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:41,335 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-08-18 15:21:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:21:41,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 15:21:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:41,341 INFO L225 Difference]: With dead ends: 270 [2020-08-18 15:21:41,341 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 15:21:41,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:21:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 15:21:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 140. [2020-08-18 15:21:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-18 15:21:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-08-18 15:21:41,388 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 47 [2020-08-18 15:21:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:41,389 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-08-18 15:21:41,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:21:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-08-18 15:21:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:21:41,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:41,391 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] [2020-08-18 15:21:41,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:21:41,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:41,392 INFO L82 PathProgramCache]: Analyzing trace with hash 607971640, now seen corresponding path program 1 times [2020-08-18 15:21:41,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:41,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449776857] [2020-08-18 15:21:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,767 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:41,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:21:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:21:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:41,905 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 15:21:41,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449776857] [2020-08-18 15:21:41,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:41,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:21:41,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171229992] [2020-08-18 15:21:41,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:21:41,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:41,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:21:41,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:21:41,912 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 8 states. [2020-08-18 15:21:42,266 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:42,573 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:42,854 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:43,077 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:43,769 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:45,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:45,805 INFO L93 Difference]: Finished difference Result 476 states and 582 transitions. [2020-08-18 15:21:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:21:45,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 15:21:45,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:45,813 INFO L225 Difference]: With dead ends: 476 [2020-08-18 15:21:45,813 INFO L226 Difference]: Without dead ends: 360 [2020-08-18 15:21:45,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:21:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-18 15:21:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 298. [2020-08-18 15:21:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-08-18 15:21:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 356 transitions. [2020-08-18 15:21:45,890 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 356 transitions. Word has length 51 [2020-08-18 15:21:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:45,891 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 356 transitions. [2020-08-18 15:21:45,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:21:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 356 transitions. [2020-08-18 15:21:45,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:21:45,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:45,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:45,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:21:45,894 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:45,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:45,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1795694260, now seen corresponding path program 1 times [2020-08-18 15:21:45,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:45,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776483522] [2020-08-18 15:21:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,210 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:21:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:21:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:46,327 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 15:21:46,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776483522] [2020-08-18 15:21:46,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:46,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 15:21:46,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833269450] [2020-08-18 15:21:46,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:21:46,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:46,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:21:46,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:21:46,330 INFO L87 Difference]: Start difference. First operand 298 states and 356 transitions. Second operand 12 states. [2020-08-18 15:21:46,902 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:47,204 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:47,447 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:47,677 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:48,252 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:21:49,102 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:49,491 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:49,864 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:50,116 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:21:50,382 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:50,755 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:51,098 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:21:51,538 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:21:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:53,560 INFO L93 Difference]: Finished difference Result 1213 states and 1632 transitions. [2020-08-18 15:21:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 15:21:53,562 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 15:21:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:53,576 INFO L225 Difference]: With dead ends: 1213 [2020-08-18 15:21:53,576 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 15:21:53,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 15:21:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 15:21:53,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 842. [2020-08-18 15:21:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-08-18 15:21:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1054 transitions. [2020-08-18 15:21:53,765 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1054 transitions. Word has length 57 [2020-08-18 15:21:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:53,766 INFO L479 AbstractCegarLoop]: Abstraction has 842 states and 1054 transitions. [2020-08-18 15:21:53,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:21:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1054 transitions. [2020-08-18 15:21:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 15:21:53,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:53,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:53,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:21:53,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2070558330, now seen corresponding path program 1 times [2020-08-18 15:21:53,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:53,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989356181] [2020-08-18 15:21:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,028 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:21:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:21:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:21:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 15:21:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:54,104 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 15:21:54,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989356181] [2020-08-18 15:21:54,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:21:54,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:21:54,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139229379] [2020-08-18 15:21:54,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:21:54,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:54,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:21:54,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:21:54,106 INFO L87 Difference]: Start difference. First operand 842 states and 1054 transitions. Second operand 6 states. [2020-08-18 15:21:54,434 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:21:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:21:56,293 INFO L93 Difference]: Finished difference Result 1979 states and 2649 transitions. [2020-08-18 15:21:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:21:56,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 15:21:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:21:56,304 INFO L225 Difference]: With dead ends: 1979 [2020-08-18 15:21:56,305 INFO L226 Difference]: Without dead ends: 1161 [2020-08-18 15:21:56,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:21:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-08-18 15:21:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1074. [2020-08-18 15:21:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-08-18 15:21:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1340 transitions. [2020-08-18 15:21:56,561 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1340 transitions. Word has length 61 [2020-08-18 15:21:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:21:56,561 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1340 transitions. [2020-08-18 15:21:56,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:21:56,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1340 transitions. [2020-08-18 15:21:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 15:21:56,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:21:56,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:21:56,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:21:56,565 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:21:56,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:21:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1347234794, now seen corresponding path program 1 times [2020-08-18 15:21:56,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:21:56,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459480879] [2020-08-18 15:21:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:21:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,845 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:21:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:21:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:21:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:21:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:21:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:21:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:21:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:21:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 15:21:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:21:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:21:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:21:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 15:21:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 15:21:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:21:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 15:21:57,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459480879] [2020-08-18 15:21:57,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:21:57,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:21:57,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034379175] [2020-08-18 15:21:57,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:21:57,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:21:57,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:21:57,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:21:57,044 INFO L87 Difference]: Start difference. First operand 1074 states and 1340 transitions. Second operand 10 states. [2020-08-18 15:21:57,734 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 15:21:58,278 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:00,380 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:02,388 INFO L93 Difference]: Finished difference Result 2051 states and 2661 transitions. [2020-08-18 15:22:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 15:22:02,389 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 15:22:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:02,402 INFO L225 Difference]: With dead ends: 2051 [2020-08-18 15:22:02,402 INFO L226 Difference]: Without dead ends: 1278 [2020-08-18 15:22:02,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 15:22:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2020-08-18 15:22:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1181. [2020-08-18 15:22:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2020-08-18 15:22:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1451 transitions. [2020-08-18 15:22:02,718 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1451 transitions. Word has length 88 [2020-08-18 15:22:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:02,720 INFO L479 AbstractCegarLoop]: Abstraction has 1181 states and 1451 transitions. [2020-08-18 15:22:02,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:22:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1451 transitions. [2020-08-18 15:22:02,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 15:22:02,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:02,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:02,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:22:02,730 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash 321074684, now seen corresponding path program 1 times [2020-08-18 15:22:02,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:02,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226516911] [2020-08-18 15:22:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,030 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:22:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:22:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 15:22:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:22:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:22:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 15:22:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 15:22:03,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226516911] [2020-08-18 15:22:03,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:03,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:22:03,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072970928] [2020-08-18 15:22:03,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:22:03,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:22:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:22:03,272 INFO L87 Difference]: Start difference. First operand 1181 states and 1451 transitions. Second operand 10 states. [2020-08-18 15:22:04,283 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:04,527 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:22:04,778 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:05,021 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:06,225 INFO L93 Difference]: Finished difference Result 2491 states and 3270 transitions. [2020-08-18 15:22:06,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:22:06,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-18 15:22:06,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:06,234 INFO L225 Difference]: With dead ends: 2491 [2020-08-18 15:22:06,235 INFO L226 Difference]: Without dead ends: 1334 [2020-08-18 15:22:06,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 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 15:22:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-08-18 15:22:06,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1211. [2020-08-18 15:22:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2020-08-18 15:22:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1485 transitions. [2020-08-18 15:22:06,522 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1485 transitions. Word has length 143 [2020-08-18 15:22:06,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:06,522 INFO L479 AbstractCegarLoop]: Abstraction has 1211 states and 1485 transitions. [2020-08-18 15:22:06,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:22:06,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1485 transitions. [2020-08-18 15:22:06,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-18 15:22:06,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:06,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:06,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:22:06,528 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:06,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:06,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1297900230, now seen corresponding path program 1 times [2020-08-18 15:22:06,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:06,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624106038] [2020-08-18 15:22:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,814 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:22:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:22:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 15:22:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:22:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-18 15:22:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 15:22:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 15:22:07,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624106038] [2020-08-18 15:22:07,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:07,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:22:07,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111747372] [2020-08-18 15:22:07,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:22:07,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:07,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:22:07,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:22:07,064 INFO L87 Difference]: Start difference. First operand 1211 states and 1485 transitions. Second operand 12 states. [2020-08-18 15:22:07,833 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:08,062 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:08,286 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:08,920 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:09,179 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:09,410 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:10,648 INFO L93 Difference]: Finished difference Result 2221 states and 2811 transitions. [2020-08-18 15:22:10,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:22:10,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-18 15:22:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:10,657 INFO L225 Difference]: With dead ends: 2221 [2020-08-18 15:22:10,657 INFO L226 Difference]: Without dead ends: 1034 [2020-08-18 15:22:10,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 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 15:22:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-18 15:22:10,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 978. [2020-08-18 15:22:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-18 15:22:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1184 transitions. [2020-08-18 15:22:10,881 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1184 transitions. Word has length 143 [2020-08-18 15:22:10,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:10,882 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1184 transitions. [2020-08-18 15:22:10,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:22:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1184 transitions. [2020-08-18 15:22:10,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 15:22:10,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:10,890 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:10,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:22:10,891 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:10,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash 183103711, now seen corresponding path program 1 times [2020-08-18 15:22:10,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:10,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558528377] [2020-08-18 15:22:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,209 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:22:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:22:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 15:22:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 15:22:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 15:22:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 15:22:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 15:22:11,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558528377] [2020-08-18 15:22:11,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:11,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:22:11,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416901126] [2020-08-18 15:22:11,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:22:11,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:11,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:22:11,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:22:11,400 INFO L87 Difference]: Start difference. First operand 978 states and 1184 transitions. Second operand 10 states. [2020-08-18 15:22:13,499 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:13,719 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:13,966 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:14,198 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:14,557 INFO L93 Difference]: Finished difference Result 1865 states and 2314 transitions. [2020-08-18 15:22:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:22:14,558 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-18 15:22:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:14,563 INFO L225 Difference]: With dead ends: 1865 [2020-08-18 15:22:14,564 INFO L226 Difference]: Without dead ends: 1066 [2020-08-18 15:22:14,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:22:14,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-08-18 15:22:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1010. [2020-08-18 15:22:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-08-18 15:22:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1218 transitions. [2020-08-18 15:22:14,767 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1218 transitions. Word has length 147 [2020-08-18 15:22:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:14,768 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1218 transitions. [2020-08-18 15:22:14,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:22:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1218 transitions. [2020-08-18 15:22:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-18 15:22:14,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:14,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:14,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:22:14,772 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:14,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:14,773 INFO L82 PathProgramCache]: Analyzing trace with hash -326369379, now seen corresponding path program 1 times [2020-08-18 15:22:14,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:14,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950858967] [2020-08-18 15:22:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,046 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:22:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:22:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 15:22:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 15:22:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-18 15:22:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 15:22:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-18 15:22:15,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950858967] [2020-08-18 15:22:15,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:15,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 15:22:15,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910865192] [2020-08-18 15:22:15,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 15:22:15,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 15:22:15,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:22:15,308 INFO L87 Difference]: Start difference. First operand 1010 states and 1218 transitions. Second operand 10 states. [2020-08-18 15:22:15,730 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:17,539 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:17,814 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:18,058 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:18,325 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:18,602 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:22:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:19,036 INFO L93 Difference]: Finished difference Result 1087 states and 1336 transitions. [2020-08-18 15:22:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:22:19,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 147 [2020-08-18 15:22:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:19,043 INFO L225 Difference]: With dead ends: 1087 [2020-08-18 15:22:19,043 INFO L226 Difference]: Without dead ends: 1084 [2020-08-18 15:22:19,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:22:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-18 15:22:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1010. [2020-08-18 15:22:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-08-18 15:22:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1213 transitions. [2020-08-18 15:22:19,242 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1213 transitions. Word has length 147 [2020-08-18 15:22:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:19,243 INFO L479 AbstractCegarLoop]: Abstraction has 1010 states and 1213 transitions. [2020-08-18 15:22:19,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 15:22:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1213 transitions. [2020-08-18 15:22:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-18 15:22:19,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:19,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:19,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:22:19,249 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash 154971906, now seen corresponding path program 1 times [2020-08-18 15:22:19,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:19,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676279512] [2020-08-18 15:22:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,649 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:19,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:22:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:22:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 15:22:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 15:22:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 15:22:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 15:22:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 15:22:19,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676279512] [2020-08-18 15:22:19,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:19,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 15:22:19,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57501413] [2020-08-18 15:22:19,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 15:22:19,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 15:22:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:22:19,883 INFO L87 Difference]: Start difference. First operand 1010 states and 1213 transitions. Second operand 12 states. [2020-08-18 15:22:20,366 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:20,911 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:21,390 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:21,681 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:21,957 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:22,203 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:22:22,502 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:22,789 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:24,601 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:22:25,345 INFO L93 Difference]: Finished difference Result 2425 states and 3146 transitions. [2020-08-18 15:22:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 15:22:25,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-18 15:22:25,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:22:25,357 INFO L225 Difference]: With dead ends: 2425 [2020-08-18 15:22:25,357 INFO L226 Difference]: Without dead ends: 1594 [2020-08-18 15:22:25,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 15:22:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2020-08-18 15:22:25,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1344. [2020-08-18 15:22:25,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-08-18 15:22:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1649 transitions. [2020-08-18 15:22:25,650 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1649 transitions. Word has length 151 [2020-08-18 15:22:25,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:22:25,653 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1649 transitions. [2020-08-18 15:22:25,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 15:22:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1649 transitions. [2020-08-18 15:22:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-08-18 15:22:25,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:22:25,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:22:25,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:22:25,661 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:22:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:22:25,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1326265885, now seen corresponding path program 2 times [2020-08-18 15:22:25,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:22:25,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391989871] [2020-08-18 15:22:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:22:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:25,961 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:22:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:22:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:22:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:25,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:22:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:25,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:22:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:22:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:22:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:22:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:22:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 15:22:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:22:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:22:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 15:22:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 15:22:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:22:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:22:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:22:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-08-18 15:22:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-18 15:22:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:22:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 15:22:26,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391989871] [2020-08-18 15:22:26,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:22:26,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:22:26,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741724615] [2020-08-18 15:22:26,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:22:26,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:22:26,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:22:26,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:22:26,316 INFO L87 Difference]: Start difference. First operand 1344 states and 1649 transitions. Second operand 13 states. [2020-08-18 15:22:27,418 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:27,726 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:22:29,782 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 15:22:30,064 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:30,295 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:22:30,735 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186