/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=WIDESTAMONGSMALL --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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:35:38,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:35:38,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:35:38,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:35:38,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:35:38,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:35:38,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:35:38,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:35:38,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:35:38,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:35:38,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:35:38,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:35:38,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:35:38,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:35:38,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:35:38,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:35:38,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:35:38,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:35:38,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:35:38,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:35:38,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:35:38,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:35:38,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:35:38,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:35:38,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:35:38,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:35:38,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:35:38,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:35:38,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:35:38,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:35:38,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:35:38,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:35:38,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:35:38,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:35:38,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:35:38,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:35:38,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:35:38,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:35:38,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:35:38,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:35:38,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:35:38,680 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 [2020-08-21 23:35:38,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:35:38,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:35:38,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:35:38,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:35:38,704 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:35:38,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:35:38,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:35:38,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:35:38,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:35:38,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:35:38,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:35:38,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:35:38,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:35:38,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:35:38,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:35:38,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:35:38,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:35:38,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:35:38,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:35:38,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:35:38,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:35:38,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:35:38,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:35:38,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:35:38,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:35:38,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:35:38,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:35:38,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:35:38,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:35:38,709 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:35:39,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:35:39,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:35:39,065 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:35:39,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:35:39,067 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:35:39,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-21 23:35:39,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5e8e156/48696166e6a74f2da14aa6abfa6a8050/FLAG8afcbdf68 [2020-08-21 23:35:39,687 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:35:39,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2020-08-21 23:35:39,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5e8e156/48696166e6a74f2da14aa6abfa6a8050/FLAG8afcbdf68 [2020-08-21 23:35:39,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de5e8e156/48696166e6a74f2da14aa6abfa6a8050 [2020-08-21 23:35:39,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:35:39,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:35:39,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:35:39,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:35:39,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:35:39,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:35:39" (1/1) ... [2020-08-21 23:35:39,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d733b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:39, skipping insertion in model container [2020-08-21 23:35:39,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:35:39" (1/1) ... [2020-08-21 23:35:39,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:35:40,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:35:40,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:35:40,487 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:35:40,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:35:40,626 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:35:40,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40 WrapperNode [2020-08-21 23:35:40,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:35:40,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:35:40,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:35:40,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:35:40,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (1/1) ... [2020-08-21 23:35:40,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (1/1) ... [2020-08-21 23:35:40,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (1/1) ... [2020-08-21 23:35:40,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (1/1) ... [2020-08-21 23:35:40,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (1/1) ... [2020-08-21 23:35:40,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (1/1) ... [2020-08-21 23:35:40,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (1/1) ... [2020-08-21 23:35:40,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:35:40,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:35:40,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:35:40,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:35:40,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (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 [2020-08-21 23:35:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:35:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:35:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:35:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:35:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:35:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:35:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:35:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:35:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:35:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:35:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 23:35:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:35:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:35:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:35:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:35:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:35:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:35:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:35:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:35:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:35:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:35:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:35:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:35:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:35:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:35:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:35:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:35:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:35:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:35:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:35:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:35:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:35:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:35:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:35:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:35:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:35:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:35:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:35:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:35:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:35:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:35:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:35:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:35:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:35:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:35:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:35:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 23:35:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:35:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:35:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:35:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:35:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:35:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:35:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:35:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:35:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:35:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:35:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:35:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 23:35:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:35:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:35:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:35:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:35:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:35:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:35:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:35:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:35:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:35:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:35:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:35:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:35:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:35:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:35:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:35:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:35:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:35:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:35:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:35:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:35:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:35:41,838 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:35:41,838 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:35:41,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:35:41 BoogieIcfgContainer [2020-08-21 23:35:41,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:35:41,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:35:41,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:35:41,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:35:41,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:35:39" (1/3) ... [2020-08-21 23:35:41,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a365af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:35:41, skipping insertion in model container [2020-08-21 23:35:41,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:35:40" (2/3) ... [2020-08-21 23:35:41,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a365af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:35:41, skipping insertion in model container [2020-08-21 23:35:41,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:35:41" (3/3) ... [2020-08-21 23:35:41,852 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2020-08-21 23:35:41,863 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:35:41,872 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:35:41,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:35:41,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:35:41,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:35:41,910 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:35:41,910 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:35:41,910 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:35:41,910 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:35:41,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:35:41,911 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:35:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-21 23:35:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 23:35:41,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:35:41,944 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] [2020-08-21 23:35:41,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:35:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:35:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1991715745, now seen corresponding path program 1 times [2020-08-21 23:35:41,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:35:41,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565469539] [2020-08-21 23:35:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:35:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,560 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:35:42,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:35:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:35:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:35:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:35:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:35:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:35:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 23:35:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 23:35:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:35:42,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565469539] [2020-08-21 23:35:42,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:35:42,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:35:42,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477651215] [2020-08-21 23:35:42,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:35:42,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:35:42,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:35:42,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:35:42,715 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-08-21 23:35:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:35:43,793 INFO L93 Difference]: Finished difference Result 286 states and 375 transitions. [2020-08-21 23:35:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:35:43,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 23:35:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:35:43,811 INFO L225 Difference]: With dead ends: 286 [2020-08-21 23:35:43,811 INFO L226 Difference]: Without dead ends: 159 [2020-08-21 23:35:43,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:35:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-21 23:35:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2020-08-21 23:35:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 23:35:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-08-21 23:35:43,925 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 51 [2020-08-21 23:35:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:35:43,925 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-08-21 23:35:43,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:35:43,925 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-08-21 23:35:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:35:43,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:35:43,929 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] [2020-08-21 23:35:43,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:35:43,930 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:35:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:35:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -392602955, now seen corresponding path program 1 times [2020-08-21 23:35:43,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:35:43,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489974482] [2020-08-21 23:35:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:35:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,271 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:35:44,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:35:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:35:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:35:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:35:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:35:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:35:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:35:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:35:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:35:44,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489974482] [2020-08-21 23:35:44,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:35:44,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:35:44,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634209584] [2020-08-21 23:35:44,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:35:44,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:35:44,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:35:44,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:35:44,340 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 5 states. [2020-08-21 23:35:44,808 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:35:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:35:45,633 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2020-08-21 23:35:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:35:45,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 23:35:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:35:45,638 INFO L225 Difference]: With dead ends: 231 [2020-08-21 23:35:45,638 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 23:35:45,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:35:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 23:35:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-21 23:35:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 23:35:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-21 23:35:45,684 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2020-08-21 23:35:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:35:45,685 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-21 23:35:45,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:35:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-21 23:35:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 23:35:45,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:35:45,688 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] [2020-08-21 23:35:45,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:35:45,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:35:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:35:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash -368031557, now seen corresponding path program 1 times [2020-08-21 23:35:45,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:35:45,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900587507] [2020-08-21 23:35:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:35:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,068 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:35:46,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:35:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:35:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:35:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:35:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:35:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:35:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:35:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:35:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:35:46,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900587507] [2020-08-21 23:35:46,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:35:46,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:35:46,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133112728] [2020-08-21 23:35:46,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:35:46,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:35:46,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:35:46,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:35:46,180 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 9 states. [2020-08-21 23:35:46,533 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:35:46,879 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:47,107 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:47,339 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:35:48,537 INFO L93 Difference]: Finished difference Result 240 states and 301 transitions. [2020-08-21 23:35:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:35:48,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 23:35:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:35:48,545 INFO L225 Difference]: With dead ends: 240 [2020-08-21 23:35:48,546 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 23:35:48,547 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 [2020-08-21 23:35:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 23:35:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2020-08-21 23:35:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-21 23:35:48,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-21 23:35:48,583 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 56 [2020-08-21 23:35:48,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:35:48,583 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-21 23:35:48,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:35:48,584 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-21 23:35:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 23:35:48,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:35:48,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:35:48,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:35:48,587 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:35:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:35:48,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1230357120, now seen corresponding path program 1 times [2020-08-21 23:35:48,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:35:48,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614314915] [2020-08-21 23:35:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:35:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:48,929 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:35:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:35:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:35:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:48,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:35:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:35:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:35:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:35:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:35:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:35:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:35:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 23:35:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 23:35:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:35:49,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614314915] [2020-08-21 23:35:49,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:35:49,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:35:49,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738496926] [2020-08-21 23:35:49,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:35:49,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:35:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:35:49,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:35:49,067 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 7 states. [2020-08-21 23:35:49,405 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:35:50,641 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:35:51,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:35:51,339 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2020-08-21 23:35:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:35:51,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-08-21 23:35:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:35:51,347 INFO L225 Difference]: With dead ends: 334 [2020-08-21 23:35:51,347 INFO L226 Difference]: Without dead ends: 243 [2020-08-21 23:35:51,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:35:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-08-21 23:35:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2020-08-21 23:35:51,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-08-21 23:35:51,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2020-08-21 23:35:51,403 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 69 [2020-08-21 23:35:51,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:35:51,403 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2020-08-21 23:35:51,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:35:51,404 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2020-08-21 23:35:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 23:35:51,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:35:51,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:35:51,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:35:51,407 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:35:51,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:35:51,407 INFO L82 PathProgramCache]: Analyzing trace with hash 810215565, now seen corresponding path program 1 times [2020-08-21 23:35:51,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:35:51,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441679753] [2020-08-21 23:35:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:35:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,733 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:35:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:35:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:35:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:35:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:35:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:35:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:35:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:35:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:35:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:35:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:35:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:35:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 23:35:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 23:35:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:35:51,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441679753] [2020-08-21 23:35:51,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:35:51,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:35:51,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684413815] [2020-08-21 23:35:51,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:35:51,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:35:51,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:35:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:35:51,908 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 9 states. [2020-08-21 23:35:52,286 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:35:53,486 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:53,768 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:54,024 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:54,272 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:35:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:35:55,271 INFO L93 Difference]: Finished difference Result 582 states and 737 transitions. [2020-08-21 23:35:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 23:35:55,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 23:35:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:35:55,282 INFO L225 Difference]: With dead ends: 582 [2020-08-21 23:35:55,283 INFO L226 Difference]: Without dead ends: 413 [2020-08-21 23:35:55,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 23:35:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-21 23:35:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2020-08-21 23:35:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-08-21 23:35:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2020-08-21 23:35:55,404 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 83 [2020-08-21 23:35:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:35:55,404 INFO L479 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2020-08-21 23:35:55,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:35:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2020-08-21 23:35:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 23:35:55,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:35:55,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:35:55,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:35:55,407 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:35:55,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:35:55,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1817856655, now seen corresponding path program 1 times [2020-08-21 23:35:55,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:35:55,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320390460] [2020-08-21 23:35:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:35:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,707 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:35:55,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:35:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:35:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:35:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:35:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:35:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:35:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:35:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:35:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:35:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:35:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:35:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:35:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 23:35:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 23:35:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:35:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:35:55,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320390460] [2020-08-21 23:35:55,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:35:55,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 23:35:55,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692501195] [2020-08-21 23:35:55,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:35:55,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:35:55,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:35:55,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:35:55,897 INFO L87 Difference]: Start difference. First operand 342 states and 394 transitions. Second operand 10 states. [2020-08-21 23:35:56,673 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:35:57,830 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:58,070 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:35:58,340 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:58,601 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:35:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:35:59,660 INFO L93 Difference]: Finished difference Result 762 states and 947 transitions. [2020-08-21 23:35:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 23:35:59,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-08-21 23:35:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:35:59,667 INFO L225 Difference]: With dead ends: 762 [2020-08-21 23:35:59,667 INFO L226 Difference]: Without dead ends: 448 [2020-08-21 23:35:59,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 23:35:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-08-21 23:35:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 341. [2020-08-21 23:35:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-21 23:35:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2020-08-21 23:35:59,759 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 87 [2020-08-21 23:35:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:35:59,759 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2020-08-21 23:35:59,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:35:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2020-08-21 23:35:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 23:35:59,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:35:59,762 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] [2020-08-21 23:35:59,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:35:59,762 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:35:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:35:59,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1046149773, now seen corresponding path program 1 times [2020-08-21 23:35:59,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:35:59,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187654529] [2020-08-21 23:35:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:35:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,013 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:00,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:36:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:36:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:36:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 23:36:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 23:36:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:00,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187654529] [2020-08-21 23:36:00,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:00,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 23:36:00,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187323706] [2020-08-21 23:36:00,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 23:36:00,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:00,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 23:36:00,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:36:00,227 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand 10 states. [2020-08-21 23:36:01,208 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:01,473 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:36:01,737 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:01,979 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:02,983 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2020-08-21 23:36:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 23:36:02,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 23:36:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:02,988 INFO L225 Difference]: With dead ends: 765 [2020-08-21 23:36:02,988 INFO L226 Difference]: Without dead ends: 452 [2020-08-21 23:36:02,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:36:02,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-08-21 23:36:03,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 351. [2020-08-21 23:36:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-21 23:36:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-08-21 23:36:03,053 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 88 [2020-08-21 23:36:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:03,053 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-08-21 23:36:03,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 23:36:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-08-21 23:36:03,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 23:36:03,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:03,055 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] [2020-08-21 23:36:03,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:36:03,056 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:03,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1747749647, now seen corresponding path program 1 times [2020-08-21 23:36:03,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:03,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387063437] [2020-08-21 23:36:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,336 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:03,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:36:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:36:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:36:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 23:36:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 23:36:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:03,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387063437] [2020-08-21 23:36:03,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:03,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:36:03,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972645588] [2020-08-21 23:36:03,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:36:03,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:03,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:36:03,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:36:03,482 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 12 states. [2020-08-21 23:36:03,951 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:04,188 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:04,416 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:05,032 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:05,320 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:05,555 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:06,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:06,709 INFO L93 Difference]: Finished difference Result 789 states and 998 transitions. [2020-08-21 23:36:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:36:06,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-21 23:36:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:06,717 INFO L225 Difference]: With dead ends: 789 [2020-08-21 23:36:06,717 INFO L226 Difference]: Without dead ends: 466 [2020-08-21 23:36:06,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:36:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-21 23:36:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 359. [2020-08-21 23:36:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-08-21 23:36:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 409 transitions. [2020-08-21 23:36:06,785 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 409 transitions. Word has length 88 [2020-08-21 23:36:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:06,786 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 409 transitions. [2020-08-21 23:36:06,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:36:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 409 transitions. [2020-08-21 23:36:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 23:36:06,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:06,788 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] [2020-08-21 23:36:06,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:36:06,788 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:06,789 INFO L82 PathProgramCache]: Analyzing trace with hash -821736752, now seen corresponding path program 1 times [2020-08-21 23:36:06,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:06,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636167396] [2020-08-21 23:36:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,056 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:36:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:36:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:36:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 23:36:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 23:36:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:07,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636167396] [2020-08-21 23:36:07,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:07,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:36:07,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903897624] [2020-08-21 23:36:07,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:36:07,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:07,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:36:07,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:36:07,233 INFO L87 Difference]: Start difference. First operand 359 states and 409 transitions. Second operand 8 states. [2020-08-21 23:36:07,701 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:08,224 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:10,370 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2020-08-21 23:36:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 23:36:10,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-21 23:36:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:10,378 INFO L225 Difference]: With dead ends: 1108 [2020-08-21 23:36:10,378 INFO L226 Difference]: Without dead ends: 777 [2020-08-21 23:36:10,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-21 23:36:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-21 23:36:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 645. [2020-08-21 23:36:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2020-08-21 23:36:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 763 transitions. [2020-08-21 23:36:10,499 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 763 transitions. Word has length 88 [2020-08-21 23:36:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:10,499 INFO L479 AbstractCegarLoop]: Abstraction has 645 states and 763 transitions. [2020-08-21 23:36:10,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:36:10,499 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 763 transitions. [2020-08-21 23:36:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 23:36:10,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:10,502 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] [2020-08-21 23:36:10,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:36:10,502 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:10,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1708334166, now seen corresponding path program 1 times [2020-08-21 23:36:10,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:10,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768855588] [2020-08-21 23:36:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,797 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:10,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:36:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:36:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:36:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:36:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 23:36:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 23:36:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:36:10,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768855588] [2020-08-21 23:36:10,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:36:10,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:36:10,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162953352] [2020-08-21 23:36:10,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:36:10,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:10,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:36:10,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:36:10,920 INFO L87 Difference]: Start difference. First operand 645 states and 763 transitions. Second operand 8 states. [2020-08-21 23:36:11,371 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:13,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:13,682 INFO L93 Difference]: Finished difference Result 1272 states and 1654 transitions. [2020-08-21 23:36:13,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 23:36:13,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-21 23:36:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:13,695 INFO L225 Difference]: With dead ends: 1272 [2020-08-21 23:36:13,695 INFO L226 Difference]: Without dead ends: 1269 [2020-08-21 23:36:13,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-21 23:36:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-21 23:36:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1071. [2020-08-21 23:36:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2020-08-21 23:36:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1280 transitions. [2020-08-21 23:36:13,979 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1280 transitions. Word has length 92 [2020-08-21 23:36:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:13,980 INFO L479 AbstractCegarLoop]: Abstraction has 1071 states and 1280 transitions. [2020-08-21 23:36:13,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:36:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1280 transitions. [2020-08-21 23:36:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 23:36:13,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:13,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 23:36:13,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:36:13,987 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:13,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1546611492, now seen corresponding path program 1 times [2020-08-21 23:36:13,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:13,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860419180] [2020-08-21 23:36:13,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,293 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:14,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:36:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:36:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:36:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:36:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:36:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:36:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 23:36:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 23:36:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:36:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 23:36:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 23:36:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 23:36:14,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860419180] [2020-08-21 23:36:14,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:36:14,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 23:36:14,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052415699] [2020-08-21 23:36:14,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 23:36:14,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:14,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 23:36:14,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:36:14,600 INFO L87 Difference]: Start difference. First operand 1071 states and 1280 transitions. Second operand 19 states. [2020-08-21 23:36:15,119 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:15,465 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:36:15,721 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:36:15,963 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:36:16,594 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:17,650 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:18,027 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:19,281 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:19,541 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:19,808 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:20,088 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:20,317 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:20,583 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:20,886 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:21,131 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:36:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:21,891 INFO L93 Difference]: Finished difference Result 2024 states and 2482 transitions. [2020-08-21 23:36:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-08-21 23:36:21,892 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-21 23:36:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:21,902 INFO L225 Difference]: With dead ends: 2024 [2020-08-21 23:36:21,903 INFO L226 Difference]: Without dead ends: 981 [2020-08-21 23:36:21,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-08-21 23:36:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-08-21 23:36:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 858. [2020-08-21 23:36:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-08-21 23:36:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 979 transitions. [2020-08-21 23:36:22,120 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 979 transitions. Word has length 150 [2020-08-21 23:36:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:22,121 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 979 transitions. [2020-08-21 23:36:22,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 23:36:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 979 transitions. [2020-08-21 23:36:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-21 23:36:22,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:36:22,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:36:22,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:36:22,125 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:36:22,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:36:22,126 INFO L82 PathProgramCache]: Analyzing trace with hash 182941043, now seen corresponding path program 1 times [2020-08-21 23:36:22,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:36:22,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738780862] [2020-08-21 23:36:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:36:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,529 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:36:22,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:36:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:36:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:36:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:36:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:36:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:36:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:36:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:36:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:36:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:36:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 23:36:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:36:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 23:36:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:36:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:36:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:36:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 23:36:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 23:36:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:36:22,797 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 23:36:22,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738780862] [2020-08-21 23:36:22,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:36:22,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 23:36:22,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829021088] [2020-08-21 23:36:22,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:36:22,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:36:22,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:36:22,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:36:22,800 INFO L87 Difference]: Start difference. First operand 858 states and 979 transitions. Second operand 13 states. [2020-08-21 23:36:23,422 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:23,654 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:23,884 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:36:24,815 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:36:26,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:36:26,312 INFO L93 Difference]: Finished difference Result 1517 states and 1820 transitions. [2020-08-21 23:36:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 23:36:26,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 150 [2020-08-21 23:36:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:36:26,314 INFO L225 Difference]: With dead ends: 1517 [2020-08-21 23:36:26,314 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 23:36:26,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-21 23:36:26,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 23:36:26,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 23:36:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 23:36:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 23:36:26,319 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2020-08-21 23:36:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:36:26,320 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 23:36:26,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:36:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 23:36:26,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 23:36:26,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 23:36:26,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 23:36:27,455 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-21 23:36:27,719 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-21 23:36:28,441 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-21 23:36:28,808 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-21 23:36:29,136 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 202 [2020-08-21 23:36:30,244 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-21 23:36:31,386 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 339 DAG size of output: 297 [2020-08-21 23:36:32,487 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-21 23:36:32,668 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 201 [2020-08-21 23:36:33,285 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 204 [2020-08-21 23:36:34,112 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 282 [2020-08-21 23:36:35,000 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 310 [2020-08-21 23:36:36,812 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 25 [2020-08-21 23:36:36,991 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 1 [2020-08-21 23:36:37,163 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 1 [2020-08-21 23:36:37,347 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 27