/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_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:15:04,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:15:04,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:15:04,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:15:04,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:15:04,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:15:04,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:15:04,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:15:04,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:15:04,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:15:04,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:15:04,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:15:04,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:15:04,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:15:04,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:15:04,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:15:04,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:15:04,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:15:04,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:15:04,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:15:04,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:15:04,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:15:04,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:15:04,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:15:04,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:15:04,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:15:04,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:15:04,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:15:04,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:15:04,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:15:04,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:15:04,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:15:04,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:15:04,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:15:04,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:15:04,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:15:04,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:15:04,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:15:04,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:15:04,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:15:04,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:15:04,735 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 15:15:04,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:15:04,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:15:04,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:15:04,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:15:04,758 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:15:04,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:15:04,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:15:04,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:15:04,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:15:04,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:15:04,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:15:04,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:15:04,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:15:04,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:15:04,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:15:04,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:15:04,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:15:04,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:15:04,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:15:04,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:15:04,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:15:04,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:15:04,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:15:04,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:15:04,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:15:04,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:15:04,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:15:04,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:15:04,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:15:04,763 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 15:15:05,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:15:05,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:15:05,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:15:05,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:15:05,119 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:15:05,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-18 15:15:05,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e18bcd1c/657bf9a0238d46d58be7be5501ae1a4d/FLAGe7025eba2 [2020-08-18 15:15:05,703 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:15:05,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-18 15:15:05,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e18bcd1c/657bf9a0238d46d58be7be5501ae1a4d/FLAGe7025eba2 [2020-08-18 15:15:05,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4e18bcd1c/657bf9a0238d46d58be7be5501ae1a4d [2020-08-18 15:15:05,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:15:05,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:15:05,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:15:05,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:15:06,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:15:06,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:15:05" (1/1) ... [2020-08-18 15:15:06,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a45b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06, skipping insertion in model container [2020-08-18 15:15:06,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:15:05" (1/1) ... [2020-08-18 15:15:06,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:15:06,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:15:06,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:15:06,548 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:15:06,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:15:06,671 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:15:06,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06 WrapperNode [2020-08-18 15:15:06,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:15:06,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:15:06,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:15:06,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:15:06,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (1/1) ... [2020-08-18 15:15:06,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (1/1) ... [2020-08-18 15:15:06,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (1/1) ... [2020-08-18 15:15:06,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (1/1) ... [2020-08-18 15:15:06,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (1/1) ... [2020-08-18 15:15:06,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (1/1) ... [2020-08-18 15:15:06,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (1/1) ... [2020-08-18 15:15:06,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:15:06,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:15:06,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:15:06,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:15:06,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (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 15:15:06,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:15:06,840 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:15:06,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 15:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:15:06,842 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:15:06,843 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 15:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:15:06,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:15:06,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:15:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:15:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:15:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:15:06,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:15:06,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:15:06,847 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:15:06,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 15:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:15:06,849 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:15:06,850 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:15:06,851 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 15:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 15:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:15:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:15:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:15:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:15:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:15:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:15:07,999 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:15:07,999 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:15:08,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:15:08 BoogieIcfgContainer [2020-08-18 15:15:08,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:15:08,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:15:08,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:15:08,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:15:08,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:15:05" (1/3) ... [2020-08-18 15:15:08,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e843631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:15:08, skipping insertion in model container [2020-08-18 15:15:08,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:15:06" (2/3) ... [2020-08-18 15:15:08,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e843631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:15:08, skipping insertion in model container [2020-08-18 15:15:08,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:15:08" (3/3) ... [2020-08-18 15:15:08,014 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2020-08-18 15:15:08,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:15:08,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:15:08,048 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:15:08,072 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:15:08,073 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:15:08,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:15:08,073 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:15:08,073 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:15:08,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:15:08,074 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:15:08,074 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:15:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-08-18 15:15:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 15:15:08,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:08,111 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 15:15:08,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:08,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2020-08-18 15:15:08,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:08,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301206832] [2020-08-18 15:15:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,782 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:08,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:15:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:15:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:08,920 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 15:15:08,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301206832] [2020-08-18 15:15:08,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:08,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:15:08,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494622086] [2020-08-18 15:15:08,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:15:08,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:08,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:15:08,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:15:08,950 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2020-08-18 15:15:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:10,280 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2020-08-18 15:15:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:15:10,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 15:15:10,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:10,298 INFO L225 Difference]: With dead ends: 345 [2020-08-18 15:15:10,298 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 15:15:10,303 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 15:15:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 15:15:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-18 15:15:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-18 15:15:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-08-18 15:15:10,431 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2020-08-18 15:15:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:10,432 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-08-18 15:15:10,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:15:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-08-18 15:15:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:15:10,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:10,443 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 15:15:10,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:15:10,443 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:10,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2020-08-18 15:15:10,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:10,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387036213] [2020-08-18 15:15:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,774 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:10,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:15:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:15:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,817 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 15:15:10,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387036213] [2020-08-18 15:15:10,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:10,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:15:10,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153909372] [2020-08-18 15:15:10,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:15:10,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:10,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:15:10,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:15:10,821 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-08-18 15:15:11,299 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:12,320 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2020-08-18 15:15:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:15:12,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 15:15:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:12,323 INFO L225 Difference]: With dead ends: 278 [2020-08-18 15:15:12,324 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 15:15:12,326 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 15:15:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 15:15:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-18 15:15:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-18 15:15:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2020-08-18 15:15:12,366 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2020-08-18 15:15:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:12,367 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2020-08-18 15:15:12,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:15:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2020-08-18 15:15:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:15:12,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:12,369 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 15:15:12,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:15:12,369 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2020-08-18 15:15:12,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:12,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492437037] [2020-08-18 15:15:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,676 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:15:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:15:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:12,755 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 15:15:12,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492437037] [2020-08-18 15:15:12,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:12,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:15:12,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474566905] [2020-08-18 15:15:12,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:15:12,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:12,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:15:12,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:15:12,757 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2020-08-18 15:15:13,221 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:13,522 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:13,775 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:14,013 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:15,399 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2020-08-18 15:15:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:15:15,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 15:15:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:15,409 INFO L225 Difference]: With dead ends: 287 [2020-08-18 15:15:15,409 INFO L226 Difference]: Without dead ends: 170 [2020-08-18 15:15:15,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:15:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-18 15:15:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-18 15:15:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-18 15:15:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-08-18 15:15:15,450 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2020-08-18 15:15:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:15,451 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-08-18 15:15:15,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:15:15,451 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-08-18 15:15:15,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 15:15:15,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:15,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:15,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:15:15,453 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2020-08-18 15:15:15,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:15,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510956205] [2020-08-18 15:15:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,771 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:15:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 15:15:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 15:15:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:15,889 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 15:15:15,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510956205] [2020-08-18 15:15:15,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:15,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:15:15,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315247524] [2020-08-18 15:15:15,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:15:15,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:15,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:15:15,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:15:15,892 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2020-08-18 15:15:16,205 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:17,304 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:18,101 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2020-08-18 15:15:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:15:18,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-18 15:15:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:18,105 INFO L225 Difference]: With dead ends: 390 [2020-08-18 15:15:18,106 INFO L226 Difference]: Without dead ends: 273 [2020-08-18 15:15:18,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:15:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-18 15:15:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-08-18 15:15:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-18 15:15:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2020-08-18 15:15:18,156 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2020-08-18 15:15:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:18,157 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2020-08-18 15:15:18,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:15:18,157 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2020-08-18 15:15:18,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 15:15:18,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:18,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:18,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:15:18,159 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:18,159 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2020-08-18 15:15:18,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:18,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994302602] [2020-08-18 15:15:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,419 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 15:15:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:15:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 15:15:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:18,543 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 15:15:18,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994302602] [2020-08-18 15:15:18,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:18,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:15:18,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748813334] [2020-08-18 15:15:18,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:15:18,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:18,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:15:18,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:15:18,551 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2020-08-18 15:15:19,199 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:20,127 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:20,460 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:21,081 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:21,335 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:21,600 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:22,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:22,765 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2020-08-18 15:15:22,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:15:22,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-18 15:15:22,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:22,770 INFO L225 Difference]: With dead ends: 691 [2020-08-18 15:15:22,771 INFO L226 Difference]: Without dead ends: 483 [2020-08-18 15:15:22,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:15:22,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-18 15:15:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2020-08-18 15:15:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-18 15:15:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2020-08-18 15:15:22,864 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2020-08-18 15:15:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:22,864 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2020-08-18 15:15:22,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:15:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2020-08-18 15:15:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 15:15:22,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:22,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:22,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:15:22,867 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:22,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:22,867 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2020-08-18 15:15:22,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:22,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158949742] [2020-08-18 15:15:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,120 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:23,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:15:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:15:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 15:15:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 15:15:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:23,267 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 15:15:23,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158949742] [2020-08-18 15:15:23,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:23,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:15:23,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373587451] [2020-08-18 15:15:23,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:15:23,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:23,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:15:23,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:15:23,270 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2020-08-18 15:15:23,767 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:24,909 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:25,192 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:26,273 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:26,542 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:26,781 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:27,075 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2020-08-18 15:15:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:15:27,076 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 15:15:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:27,080 INFO L225 Difference]: With dead ends: 522 [2020-08-18 15:15:27,081 INFO L226 Difference]: Without dead ends: 519 [2020-08-18 15:15:27,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:15:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-18 15:15:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2020-08-18 15:15:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-18 15:15:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2020-08-18 15:15:27,162 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2020-08-18 15:15:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:27,162 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2020-08-18 15:15:27,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:15:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2020-08-18 15:15:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 15:15:27,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:27,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:27,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:15:27,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:27,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:27,166 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2020-08-18 15:15:27,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:27,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635237297] [2020-08-18 15:15:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,399 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:27,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:27,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:15:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:15:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:15:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 15:15:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:15:27,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635237297] [2020-08-18 15:15:27,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:27,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:15:27,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668220691] [2020-08-18 15:15:27,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:15:27,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:27,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:15:27,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:15:27,550 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2020-08-18 15:15:28,458 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:28,676 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:28,907 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:29,131 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:30,324 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2020-08-18 15:15:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:15:30,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-18 15:15:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:30,331 INFO L225 Difference]: With dead ends: 922 [2020-08-18 15:15:30,331 INFO L226 Difference]: Without dead ends: 527 [2020-08-18 15:15:30,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:15:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-08-18 15:15:30,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2020-08-18 15:15:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-18 15:15:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2020-08-18 15:15:30,428 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2020-08-18 15:15:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:30,428 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2020-08-18 15:15:30,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:15:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2020-08-18 15:15:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 15:15:30,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:30,430 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:30,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:15:30,431 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:30,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:30,431 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2020-08-18 15:15:30,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:30,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086435953] [2020-08-18 15:15:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,688 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:15:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:15:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:15:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 15:15:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:15:30,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086435953] [2020-08-18 15:15:30,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:30,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 15:15:30,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127666429] [2020-08-18 15:15:30,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:15:30,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:30,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:15:30,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:15:30,832 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2020-08-18 15:15:32,174 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:32,534 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:32,922 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:33,546 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:33,799 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:34,039 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:35,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:35,384 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2020-08-18 15:15:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:15:35,385 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-08-18 15:15:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:35,389 INFO L225 Difference]: With dead ends: 942 [2020-08-18 15:15:35,389 INFO L226 Difference]: Without dead ends: 537 [2020-08-18 15:15:35,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:15:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-18 15:15:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2020-08-18 15:15:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-18 15:15:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2020-08-18 15:15:35,467 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2020-08-18 15:15:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:35,467 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2020-08-18 15:15:35,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:15:35,468 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2020-08-18 15:15:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-18 15:15:35,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:35,470 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:35,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:15:35,470 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:35,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:35,470 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2020-08-18 15:15:35,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:35,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458445072] [2020-08-18 15:15:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,764 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:35,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:15:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:15:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 15:15:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 15:15:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:15:35,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458445072] [2020-08-18 15:15:35,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:35,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 15:15:35,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699043555] [2020-08-18 15:15:35,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 15:15:35,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:35,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 15:15:35,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 15:15:35,974 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2020-08-18 15:15:36,534 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:37,025 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:39,395 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2020-08-18 15:15:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 15:15:39,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-08-18 15:15:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:39,401 INFO L225 Difference]: With dead ends: 1265 [2020-08-18 15:15:39,401 INFO L226 Difference]: Without dead ends: 852 [2020-08-18 15:15:39,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:15:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-18 15:15:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2020-08-18 15:15:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-08-18 15:15:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2020-08-18 15:15:39,555 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2020-08-18 15:15:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:39,555 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2020-08-18 15:15:39,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 15:15:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2020-08-18 15:15:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-18 15:15:39,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:39,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:39,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:15:39,566 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:39,566 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2020-08-18 15:15:39,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:39,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977884146] [2020-08-18 15:15:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,833 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:15:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:15:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:15:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 15:15:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 15:15:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:40,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:15:40,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977884146] [2020-08-18 15:15:40,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:15:40,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:15:40,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007056690] [2020-08-18 15:15:40,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:15:40,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:40,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:15:40,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:15:40,294 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 17 states. [2020-08-18 15:15:40,803 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:41,142 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:15:41,391 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:41,632 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:42,242 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:43,282 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:43,615 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:43,902 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:44,170 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:44,524 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:44,796 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:45,321 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 15:15:45,840 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 15:15:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:48,212 INFO L93 Difference]: Finished difference Result 1548 states and 1897 transitions. [2020-08-18 15:15:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 15:15:48,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-08-18 15:15:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:48,219 INFO L225 Difference]: With dead ends: 1548 [2020-08-18 15:15:48,219 INFO L226 Difference]: Without dead ends: 819 [2020-08-18 15:15:48,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 15:15:48,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-18 15:15:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 723. [2020-08-18 15:15:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-18 15:15:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 840 transitions. [2020-08-18 15:15:48,350 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 840 transitions. Word has length 107 [2020-08-18 15:15:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:48,351 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 840 transitions. [2020-08-18 15:15:48,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:15:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 840 transitions. [2020-08-18 15:15:48,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-18 15:15:48,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:48,356 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:48,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:15:48,356 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:48,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:48,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2020-08-18 15:15:48,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:48,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247125410] [2020-08-18 15:15:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,697 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:15:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:15:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:15:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 15:15:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 15:15:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-18 15:15:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 15:15:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 15:15:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 15:15:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-18 15:15:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 15:15:49,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247125410] [2020-08-18 15:15:49,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:15:49,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 15:15:49,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56728853] [2020-08-18 15:15:49,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 15:15:49,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 15:15:49,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:15:49,041 INFO L87 Difference]: Start difference. First operand 723 states and 840 transitions. Second operand 18 states. [2020-08-18 15:15:49,636 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:49,988 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 15:15:50,253 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:50,500 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:51,133 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:52,207 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:52,538 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:52,825 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:53,096 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:53,445 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:53,729 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:54,843 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:55,078 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:55,339 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:55,575 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:56,554 INFO L93 Difference]: Finished difference Result 1309 states and 1611 transitions. [2020-08-18 15:15:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 15:15:56,555 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2020-08-18 15:15:56,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:56,556 INFO L225 Difference]: With dead ends: 1309 [2020-08-18 15:15:56,556 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 15:15:56,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 15:15:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 15:15:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 15:15:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 15:15:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 15:15:56,562 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-18 15:15:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:56,562 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 15:15:56,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 15:15:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 15:15:56,563 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 15:15:56,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 15:15:56,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 15:15:57,420 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-18 15:15:57,807 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-18 15:15:57,945 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-18 15:15:59,157 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-18 15:16:00,928 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-18 15:16:02,142 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 243 [2020-08-18 15:16:02,615 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-18 15:16:03,781 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-18 15:16:03,955 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 15:16:04,133 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 15:16:04,334 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 19