/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:17:10,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:17:10,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:17:10,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:17:10,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:17:10,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:17:10,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:17:10,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:17:10,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:17:10,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:17:10,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:17:10,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:17:10,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:17:10,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:17:10,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:17:10,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:17:10,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:17:10,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:17:10,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:17:10,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:17:10,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:17:10,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:17:10,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:17:10,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:17:10,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:17:10,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:17:10,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:17:10,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:17:10,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:17:10,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:17:10,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:17:10,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:17:10,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:17:10,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:17:10,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:17:10,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:17:10,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:17:10,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:17:10,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:17:10,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:17:10,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:17:10,753 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 [2020-08-22 05:17:10,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:17:10,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:17:10,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:17:10,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:17:10,805 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:17:10,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:17:10,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:17:10,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:17:10,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:17:10,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:17:10,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:17:10,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:17:10,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:17:10,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:17:10,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:17:10,808 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:17:10,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:17:10,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:17:10,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:17:10,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:17:10,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:17:10,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:17:10,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:17:10,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:17:10,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:17:10,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:17:10,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:17:10,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:17:10,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:17:10,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:17:11,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:17:11,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:17:11,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:17:11,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:17:11,160 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:17:11,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-22 05:17:11,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb99f17ff/9d15ed94135a4dceba070fd226dd6ba7/FLAG918bc390d [2020-08-22 05:17:11,683 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:17:11,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-22 05:17:11,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb99f17ff/9d15ed94135a4dceba070fd226dd6ba7/FLAG918bc390d [2020-08-22 05:17:12,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb99f17ff/9d15ed94135a4dceba070fd226dd6ba7 [2020-08-22 05:17:12,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:17:12,066 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:17:12,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:12,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:17:12,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:17:12,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0619bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12, skipping insertion in model container [2020-08-22 05:17:12,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:17:12,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:17:12,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:12,603 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:17:12,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:17:12,757 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:17:12,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12 WrapperNode [2020-08-22 05:17:12,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:17:12,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:17:12,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:17:12,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:17:12,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (1/1) ... [2020-08-22 05:17:12,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:17:12,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:17:12,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:17:12,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:17:12,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (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 [2020-08-22 05:17:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:17:12,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:17:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:12,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 05:17:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 05:17:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:17:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:17:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:17:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:17:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:17:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:17:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:17:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:17:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:17:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:17:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:17:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:17:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:17:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:17:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:17:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:17:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:17:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:17:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:17:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:17:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:17:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 05:17:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:17:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:17:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:17:12,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 05:17:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:17:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 05:17:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:17:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:17:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:17:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:17:12,985 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:17:12,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:17:12,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 05:17:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:17:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:17:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:17:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:17:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:17:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:17:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 05:17:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 05:17:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:17:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:17:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:17:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:17:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:17:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:17:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:17:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:17:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:17:12,989 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:17:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:17:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:17:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:17:12,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:17:12,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:17:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:17:12,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:17:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:17:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:17:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:17:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:17:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:17:12,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:17:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:17:12,994 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:17:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:17:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:17:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:17:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:17:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 05:17:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:17:12,995 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:17:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:17:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:17:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:17:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:17:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 05:17:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 05:17:12,996 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:17:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 05:17:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:17:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:17:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:17:14,063 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:17:14,064 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:17:14,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:14 BoogieIcfgContainer [2020-08-22 05:17:14,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:17:14,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:17:14,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:17:14,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:17:14,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:17:12" (1/3) ... [2020-08-22 05:17:14,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb68920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:14, skipping insertion in model container [2020-08-22 05:17:14,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:17:12" (2/3) ... [2020-08-22 05:17:14,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb68920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:17:14, skipping insertion in model container [2020-08-22 05:17:14,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:17:14" (3/3) ... [2020-08-22 05:17:14,078 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-08-22 05:17:14,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:17:14,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:17:14,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:17:14,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:17:14,138 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:17:14,138 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:17:14,138 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:17:14,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:17:14,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:17:14,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:17:14,139 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:17:14,161 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-22 05:17:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 05:17:14,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:14,172 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] [2020-08-22 05:17:14,173 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:14,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times [2020-08-22 05:17:14,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:14,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60604256] [2020-08-22 05:17:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,894 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 05:17:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:17:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:14,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60604256] [2020-08-22 05:17:14,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:14,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:17:14,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121671171] [2020-08-22 05:17:14,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:17:14,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:14,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:17:15,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:17:15,002 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-08-22 05:17:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:16,282 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions. [2020-08-22 05:17:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:17:16,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 05:17:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:16,300 INFO L225 Difference]: With dead ends: 344 [2020-08-22 05:17:16,300 INFO L226 Difference]: Without dead ends: 190 [2020-08-22 05:17:16,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:17:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-22 05:17:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155. [2020-08-22 05:17:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 05:17:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-22 05:17:16,408 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51 [2020-08-22 05:17:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:16,408 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-22 05:17:16,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:17:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-22 05:17:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:17:16,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:16,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:17:16,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:17:16,413 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times [2020-08-22 05:17:16,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:16,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492417477] [2020-08-22 05:17:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,741 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:16,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:17:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:17:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:16,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492417477] [2020-08-22 05:17:16,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:16,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:17:16,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421084787] [2020-08-22 05:17:16,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:17:16,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:17:16,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:17:16,797 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 5 states. [2020-08-22 05:17:17,262 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:18,387 INFO L93 Difference]: Finished difference Result 289 states and 359 transitions. [2020-08-22 05:17:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:17:18,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 05:17:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:18,391 INFO L225 Difference]: With dead ends: 289 [2020-08-22 05:17:18,391 INFO L226 Difference]: Without dead ends: 180 [2020-08-22 05:17:18,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:17:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-22 05:17:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-22 05:17:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 05:17:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-22 05:17:18,471 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-22 05:17:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:18,472 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-22 05:17:18,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:17:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-22 05:17:18,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 05:17:18,483 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:18,483 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] [2020-08-22 05:17:18,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:17:18,484 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:18,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:18,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times [2020-08-22 05:17:18,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:18,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261333551] [2020-08-22 05:17:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,849 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:18,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:17:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:17:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:18,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261333551] [2020-08-22 05:17:18,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:18,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:17:18,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111468507] [2020-08-22 05:17:18,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:17:18,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:18,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:17:18,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:17:18,979 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 9 states. [2020-08-22 05:17:19,337 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:19,656 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:19,894 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:20,137 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:21,613 INFO L93 Difference]: Finished difference Result 298 states and 374 transitions. [2020-08-22 05:17:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:17:21,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-22 05:17:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:21,626 INFO L225 Difference]: With dead ends: 298 [2020-08-22 05:17:21,626 INFO L226 Difference]: Without dead ends: 180 [2020-08-22 05:17:21,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:17:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-22 05:17:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-22 05:17:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 05:17:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2020-08-22 05:17:21,694 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56 [2020-08-22 05:17:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:21,697 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2020-08-22 05:17:21,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:17:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2020-08-22 05:17:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 05:17:21,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:21,699 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] [2020-08-22 05:17:21,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:17:21,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:21,700 INFO L82 PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times [2020-08-22 05:17:21,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:21,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694084584] [2020-08-22 05:17:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,065 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:17:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:17:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:17:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:22,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694084584] [2020-08-22 05:17:22,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:22,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:17:22,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116928775] [2020-08-22 05:17:22,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:17:22,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:22,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:17:22,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:17:22,167 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 7 states. [2020-08-22 05:17:22,536 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:23,761 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:24,673 INFO L93 Difference]: Finished difference Result 403 states and 508 transitions. [2020-08-22 05:17:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:17:24,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-22 05:17:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:24,678 INFO L225 Difference]: With dead ends: 403 [2020-08-22 05:17:24,678 INFO L226 Difference]: Without dead ends: 285 [2020-08-22 05:17:24,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 05:17:24,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-22 05:17:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239. [2020-08-22 05:17:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-22 05:17:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2020-08-22 05:17:24,743 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74 [2020-08-22 05:17:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:24,744 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2020-08-22 05:17:24,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:17:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2020-08-22 05:17:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 05:17:24,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:24,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:17:24,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:17:24,768 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:24,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times [2020-08-22 05:17:24,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:24,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940742636] [2020-08-22 05:17:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,053 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:25,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:17:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 05:17:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:17:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:25,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940742636] [2020-08-22 05:17:25,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:25,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:17:25,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458610309] [2020-08-22 05:17:25,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:17:25,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:25,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:17:25,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:17:25,238 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 9 states. [2020-08-22 05:17:25,681 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:26,721 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:27,039 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:27,616 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:27,843 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:29,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:29,209 INFO L93 Difference]: Finished difference Result 708 states and 878 transitions. [2020-08-22 05:17:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 05:17:29,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-22 05:17:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:29,216 INFO L225 Difference]: With dead ends: 708 [2020-08-22 05:17:29,216 INFO L226 Difference]: Without dead ends: 497 [2020-08-22 05:17:29,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 05:17:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-08-22 05:17:29,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 426. [2020-08-22 05:17:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-08-22 05:17:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions. [2020-08-22 05:17:29,307 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88 [2020-08-22 05:17:29,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:29,307 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 488 transitions. [2020-08-22 05:17:29,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:17:29,307 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions. [2020-08-22 05:17:29,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 05:17:29,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:29,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:17:29,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:17:29,310 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:29,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times [2020-08-22 05:17:29,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:29,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188643593] [2020-08-22 05:17:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,613 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:17:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 05:17:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 05:17:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:17:29,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188643593] [2020-08-22 05:17:29,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:29,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:17:29,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501056436] [2020-08-22 05:17:29,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:17:29,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:29,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:17:29,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:17:29,803 INFO L87 Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 10 states. [2020-08-22 05:17:30,250 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:31,481 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:32,632 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:32,862 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:33,112 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:33,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:33,514 INFO L93 Difference]: Finished difference Result 930 states and 1135 transitions. [2020-08-22 05:17:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 05:17:33,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-22 05:17:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:33,520 INFO L225 Difference]: With dead ends: 930 [2020-08-22 05:17:33,521 INFO L226 Difference]: Without dead ends: 532 [2020-08-22 05:17:33,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-22 05:17:33,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-22 05:17:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 425. [2020-08-22 05:17:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-22 05:17:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions. [2020-08-22 05:17:33,603 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92 [2020-08-22 05:17:33,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:33,604 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 485 transitions. [2020-08-22 05:17:33,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:17:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions. [2020-08-22 05:17:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 05:17:33,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:33,606 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, 1] [2020-08-22 05:17:33,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:17:33,607 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:33,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times [2020-08-22 05:17:33,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:33,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319138713] [2020-08-22 05:17:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,835 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:17:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:34,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 05:17:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:34,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:17:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:17:34,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319138713] [2020-08-22 05:17:34,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:34,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 05:17:34,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477828347] [2020-08-22 05:17:34,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:17:34,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:34,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:17:34,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:17:34,036 INFO L87 Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 10 states. [2020-08-22 05:17:35,330 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:35,555 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:17:35,821 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:36,065 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:37,325 INFO L93 Difference]: Finished difference Result 937 states and 1168 transitions. [2020-08-22 05:17:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:17:37,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-08-22 05:17:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:37,334 INFO L225 Difference]: With dead ends: 937 [2020-08-22 05:17:37,334 INFO L226 Difference]: Without dead ends: 540 [2020-08-22 05:17:37,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:17:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-08-22 05:17:37,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 435. [2020-08-22 05:17:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-22 05:17:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions. [2020-08-22 05:17:37,450 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108 [2020-08-22 05:17:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:37,451 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 495 transitions. [2020-08-22 05:17:37,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:17:37,451 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions. [2020-08-22 05:17:37,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 05:17:37,454 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:37,454 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, 1] [2020-08-22 05:17:37,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:17:37,455 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:37,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:37,455 INFO L82 PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times [2020-08-22 05:17:37,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:37,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748311243] [2020-08-22 05:17:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,767 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:17:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 05:17:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:17:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:17:37,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748311243] [2020-08-22 05:17:37,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:37,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:17:37,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892852045] [2020-08-22 05:17:37,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:17:37,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:37,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:17:37,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:17:37,961 INFO L87 Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 12 states. [2020-08-22 05:17:38,491 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:38,740 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:38,982 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:39,648 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:39,915 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:40,185 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:17:41,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:41,692 INFO L93 Difference]: Finished difference Result 957 states and 1190 transitions. [2020-08-22 05:17:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:17:41,693 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-22 05:17:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:41,699 INFO L225 Difference]: With dead ends: 957 [2020-08-22 05:17:41,700 INFO L226 Difference]: Without dead ends: 550 [2020-08-22 05:17:41,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 05:17:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-08-22 05:17:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 443. [2020-08-22 05:17:41,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-22 05:17:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2020-08-22 05:17:41,833 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108 [2020-08-22 05:17:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:41,835 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2020-08-22 05:17:41,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:17:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2020-08-22 05:17:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 05:17:41,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:41,841 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, 1] [2020-08-22 05:17:41,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:17:41,842 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:41,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:41,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times [2020-08-22 05:17:41,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:41,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009720482] [2020-08-22 05:17:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,167 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:42,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:17:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:17:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 05:17:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 05:17:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:17:42,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009720482] [2020-08-22 05:17:42,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:17:42,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:17:42,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486693067] [2020-08-22 05:17:42,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:17:42,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:42,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:17:42,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:17:42,451 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 8 states. [2020-08-22 05:17:43,529 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:44,135 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:46,836 INFO L93 Difference]: Finished difference Result 1296 states and 1667 transitions. [2020-08-22 05:17:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:17:46,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-08-22 05:17:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:46,844 INFO L225 Difference]: With dead ends: 1296 [2020-08-22 05:17:46,845 INFO L226 Difference]: Without dead ends: 881 [2020-08-22 05:17:46,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-22 05:17:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-08-22 05:17:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 749. [2020-08-22 05:17:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-22 05:17:46,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 881 transitions. [2020-08-22 05:17:46,960 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 881 transitions. Word has length 108 [2020-08-22 05:17:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:46,961 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 881 transitions. [2020-08-22 05:17:46,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:17:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 881 transitions. [2020-08-22 05:17:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 05:17:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:46,964 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, 1, 1, 1, 1, 1] [2020-08-22 05:17:46,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:17:46,964 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:46,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times [2020-08-22 05:17:46,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:46,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313586462] [2020-08-22 05:17:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,294 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:17:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:17:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 05:17:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 05:17:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:17:47,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313586462] [2020-08-22 05:17:47,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:17:47,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-22 05:17:47,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686846817] [2020-08-22 05:17:47,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 05:17:47,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 05:17:47,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:17:47,637 INFO L87 Difference]: Start difference. First operand 749 states and 881 transitions. Second operand 18 states. [2020-08-22 05:17:48,313 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:48,660 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:17:48,928 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:17:49,182 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:17:49,858 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:50,886 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:51,232 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:51,516 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:51,807 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:52,146 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:52,435 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:17:52,966 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-22 05:17:53,507 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-22 05:17:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:17:56,213 INFO L93 Difference]: Finished difference Result 1572 states and 1938 transitions. [2020-08-22 05:17:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-22 05:17:56,213 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-08-22 05:17:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:17:56,220 INFO L225 Difference]: With dead ends: 1572 [2020-08-22 05:17:56,220 INFO L226 Difference]: Without dead ends: 851 [2020-08-22 05:17:56,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 05:17:56,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-08-22 05:17:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 728. [2020-08-22 05:17:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-22 05:17:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 846 transitions. [2020-08-22 05:17:56,411 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 846 transitions. Word has length 112 [2020-08-22 05:17:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:17:56,412 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 846 transitions. [2020-08-22 05:17:56,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 05:17:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 846 transitions. [2020-08-22 05:17:56,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-22 05:17:56,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:17:56,417 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, 1, 1, 1, 1, 1] [2020-08-22 05:17:56,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:17:56,417 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:17:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:17:56,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2045020006, now seen corresponding path program 1 times [2020-08-22 05:17:56,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:17:56,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395527092] [2020-08-22 05:17:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:17:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,741 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:17:56,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:17:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:17:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:17:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:17:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:17:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:17:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:17:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:17:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:17:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:17:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 05:17:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 05:17:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:17:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:56,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:17:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:17:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:17:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:17:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-22 05:17:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-22 05:17:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:17:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-22 05:17:57,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395527092] [2020-08-22 05:17:57,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:17:57,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 05:17:57,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269184230] [2020-08-22 05:17:57,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 05:17:57,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:17:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 05:17:57,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:17:57,113 INFO L87 Difference]: Start difference. First operand 728 states and 846 transitions. Second operand 19 states. [2020-08-22 05:17:58,065 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:17:58,405 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:17:58,652 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:17:58,895 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:17:59,562 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:18:00,600 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:00,920 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:01,208 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:01,482 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:01,825 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:02,113 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:03,377 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:03,683 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:03,973 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:04,211 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:18:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:18:05,403 INFO L93 Difference]: Finished difference Result 1341 states and 1663 transitions. [2020-08-22 05:18:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 05:18:05,403 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2020-08-22 05:18:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:18:05,405 INFO L225 Difference]: With dead ends: 1341 [2020-08-22 05:18:05,405 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 05:18:05,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 05:18:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 05:18:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 05:18:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 05:18:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 05:18:05,411 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-08-22 05:18:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:18:05,411 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 05:18:05,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 05:18:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 05:18:05,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 05:18:05,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:18:05,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 05:18:07,365 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 310 DAG size of output: 247 [2020-08-22 05:18:07,682 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-22 05:18:09,476 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 265