/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=0.6 --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_spec5_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:30:26,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:30:26,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:30:26,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:30:26,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:30:26,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:30:26,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:30:26,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:30:26,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:30:26,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:30:26,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:30:26,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:30:26,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:30:26,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:30:26,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:30:26,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:30:26,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:30:26,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:30:26,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:30:26,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:30:26,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:30:26,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:30:26,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:30:26,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:30:26,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:30:26,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:30:26,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:30:26,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:30:26,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:30:26,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:30:26,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:30:26,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:30:26,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:30:26,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:30:26,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:30:26,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:30:26,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:30:26,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:30:26,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:30:26,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:30:26,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:30:26,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 00:30:26,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:30:26,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:30:26,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:30:26,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:30:26,781 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:30:26,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:30:26,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:30:26,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:30:26,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:30:26,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:30:26,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:30:26,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:30:26,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:30:26,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:30:26,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:30:26,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:30:26,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:30:26,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:30:26,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:30:26,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:30:26,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:30:26,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:30:26,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:30:26,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:30:26,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:30:26,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:30:26,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:30:26,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:30:26,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:30:26,788 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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-08-22 00:30:27,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:30:27,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:30:27,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:30:27,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:30:27,105 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:30:27,106 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-22 00:30:27,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a93aee21e/d3d828d5c3c94931ad7d79e7f47b043e/FLAG5e60c2a06 [2020-08-22 00:30:27,657 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:30:27,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-22 00:30:27,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a93aee21e/d3d828d5c3c94931ad7d79e7f47b043e/FLAG5e60c2a06 [2020-08-22 00:30:28,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a93aee21e/d3d828d5c3c94931ad7d79e7f47b043e [2020-08-22 00:30:28,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:30:28,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:30:28,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:30:28,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:30:28,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:30:28,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28, skipping insertion in model container [2020-08-22 00:30:28,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:30:28,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:30:28,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:30:28,592 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:30:28,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:30:28,708 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:30:28,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28 WrapperNode [2020-08-22 00:30:28,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:30:28,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:30:28,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:30:28,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:30:28,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... [2020-08-22 00:30:28,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:30:28,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:30:28,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:30:28,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:30:28,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:30:28,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:30:28,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:30:28,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:30:28,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:30:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:30:28,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:30:28,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:30:28,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:30:28,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:30:28,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:30:28,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:30:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:30:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:30:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:30:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:30:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:30:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:30:28,868 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:30:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:30:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 00:30:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:30:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:30:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:30:28,869 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:30:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:30:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:30:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:30:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:30:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 00:30:28,870 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 00:30:28,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 00:30:28,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 00:30:28,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 00:30:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:30:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:30:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:30:28,871 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:30:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:30:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:30:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:30:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:30:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:30:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:30:28,872 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:30:28,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 00:30:28,874 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:30:28,874 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:30:28,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:30:28,874 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:30:28,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:30:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:30:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:30:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:30:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:30:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:30:28,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:30:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:30:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:30:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:30:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:30:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:30:28,878 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:30:28,879 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:30:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 00:30:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 00:30:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:30:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:30:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 00:30:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:30:28,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:30:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:30:28,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:30:29,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:30:29,888 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:30:29,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:30:29 BoogieIcfgContainer [2020-08-22 00:30:29,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:30:29,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:30:29,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:30:29,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:30:29,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:30:28" (1/3) ... [2020-08-22 00:30:29,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd31be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:30:29, skipping insertion in model container [2020-08-22 00:30:29,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:30:28" (2/3) ... [2020-08-22 00:30:29,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bd31be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:30:29, skipping insertion in model container [2020-08-22 00:30:29,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:30:29" (3/3) ... [2020-08-22 00:30:29,902 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2020-08-22 00:30:29,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:30:29,922 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:30:29,936 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:30:29,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:30:29,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:30:29,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:30:29,963 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:30:29,963 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:30:29,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:30:29,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:30:29,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:30:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-22 00:30:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 00:30:29,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:29,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:29,999 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:30,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2020-08-22 00:30:30,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:30,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552555879] [2020-08-22 00:30:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,729 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:30:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:30:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 00:30:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:30,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552555879] [2020-08-22 00:30:30,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:30,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:30:30,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036699676] [2020-08-22 00:30:30,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:30:30,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:30,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:30:30,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:30:30,902 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 4 states. [2020-08-22 00:30:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:31,935 INFO L93 Difference]: Finished difference Result 276 states and 357 transitions. [2020-08-22 00:30:31,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:30:31,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 00:30:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:31,960 INFO L225 Difference]: With dead ends: 276 [2020-08-22 00:30:31,960 INFO L226 Difference]: Without dead ends: 153 [2020-08-22 00:30:31,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:30:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-22 00:30:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 124. [2020-08-22 00:30:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 00:30:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-22 00:30:32,068 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2020-08-22 00:30:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:32,068 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-22 00:30:32,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:30:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-22 00:30:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 00:30:32,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:32,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:32,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:30:32,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:32,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2020-08-22 00:30:32,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:32,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418502115] [2020-08-22 00:30:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,462 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:32,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:30:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 00:30:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 00:30:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:32,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418502115] [2020-08-22 00:30:32,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:32,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:32,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627031709] [2020-08-22 00:30:32,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:32,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:32,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:32,582 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 9 states. [2020-08-22 00:30:32,936 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:33,228 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:33,499 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:33,735 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:34,689 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:35,882 INFO L93 Difference]: Finished difference Result 423 states and 533 transitions. [2020-08-22 00:30:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 00:30:35,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 00:30:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:35,888 INFO L225 Difference]: With dead ends: 423 [2020-08-22 00:30:35,889 INFO L226 Difference]: Without dead ends: 327 [2020-08-22 00:30:35,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:30:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-22 00:30:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 265. [2020-08-22 00:30:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-22 00:30:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-22 00:30:35,961 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 64 [2020-08-22 00:30:35,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:35,962 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-22 00:30:35,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-22 00:30:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-22 00:30:35,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:35,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:35,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:30:35,966 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:35,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2013051811, now seen corresponding path program 1 times [2020-08-22 00:30:35,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:35,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663126760] [2020-08-22 00:30:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,244 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:36,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:30:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:30:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 00:30:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 00:30:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:36,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663126760] [2020-08-22 00:30:36,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:36,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 00:30:36,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203303780] [2020-08-22 00:30:36,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 00:30:36,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:36,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 00:30:36,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 00:30:36,387 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 7 states. [2020-08-22 00:30:36,716 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:38,149 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:38,757 INFO L93 Difference]: Finished difference Result 782 states and 1053 transitions. [2020-08-22 00:30:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 00:30:38,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-08-22 00:30:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:38,765 INFO L225 Difference]: With dead ends: 782 [2020-08-22 00:30:38,765 INFO L226 Difference]: Without dead ends: 545 [2020-08-22 00:30:38,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-22 00:30:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-08-22 00:30:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 452. [2020-08-22 00:30:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-22 00:30:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 561 transitions. [2020-08-22 00:30:38,904 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 561 transitions. Word has length 72 [2020-08-22 00:30:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:38,905 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 561 transitions. [2020-08-22 00:30:38,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 00:30:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 561 transitions. [2020-08-22 00:30:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 00:30:38,907 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:38,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:38,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:30:38,908 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:38,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:38,909 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2020-08-22 00:30:38,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:38,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980785693] [2020-08-22 00:30:38,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,253 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:39,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:30:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:30:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 00:30:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 00:30:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 00:30:39,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980785693] [2020-08-22 00:30:39,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:39,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:39,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192706338] [2020-08-22 00:30:39,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:39,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:39,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:39,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:39,359 INFO L87 Difference]: Start difference. First operand 452 states and 561 transitions. Second operand 9 states. [2020-08-22 00:30:39,762 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:40,380 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:41,266 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:41,632 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:42,065 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:42,310 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:42,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:42,899 INFO L93 Difference]: Finished difference Result 948 states and 1227 transitions. [2020-08-22 00:30:42,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 00:30:42,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 00:30:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:42,905 INFO L225 Difference]: With dead ends: 948 [2020-08-22 00:30:42,905 INFO L226 Difference]: Without dead ends: 524 [2020-08-22 00:30:42,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:30:42,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-22 00:30:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 449. [2020-08-22 00:30:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-22 00:30:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2020-08-22 00:30:42,987 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 70 [2020-08-22 00:30:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:42,987 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2020-08-22 00:30:42,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2020-08-22 00:30:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 00:30:42,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:42,990 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:42,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:30:42,991 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2020-08-22 00:30:42,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:42,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71191588] [2020-08-22 00:30:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,283 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:43,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:30:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:30:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:30:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:30:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:43,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71191588] [2020-08-22 00:30:43,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:43,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:43,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943173724] [2020-08-22 00:30:43,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:43,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:43,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:43,477 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand 9 states. [2020-08-22 00:30:43,934 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:44,894 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:30:45,200 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:45,502 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:45,770 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:46,992 INFO L93 Difference]: Finished difference Result 1360 states and 1888 transitions. [2020-08-22 00:30:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 00:30:46,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-22 00:30:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:47,003 INFO L225 Difference]: With dead ends: 1360 [2020-08-22 00:30:47,003 INFO L226 Difference]: Without dead ends: 939 [2020-08-22 00:30:47,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:30:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-22 00:30:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 795. [2020-08-22 00:30:47,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-22 00:30:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 992 transitions. [2020-08-22 00:30:47,205 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 992 transitions. Word has length 87 [2020-08-22 00:30:47,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:47,208 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 992 transitions. [2020-08-22 00:30:47,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 992 transitions. [2020-08-22 00:30:47,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 00:30:47,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:47,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:47,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:30:47,214 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1655372524, now seen corresponding path program 1 times [2020-08-22 00:30:47,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:47,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448205499] [2020-08-22 00:30:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,477 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:30:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 00:30:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 00:30:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 00:30:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:47,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448205499] [2020-08-22 00:30:47,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:47,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:30:47,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034752349] [2020-08-22 00:30:47,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:30:47,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:47,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:30:47,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:30:47,574 INFO L87 Difference]: Start difference. First operand 795 states and 992 transitions. Second operand 6 states. [2020-08-22 00:30:48,057 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:49,057 INFO L93 Difference]: Finished difference Result 1342 states and 1669 transitions. [2020-08-22 00:30:49,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:30:49,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-22 00:30:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:49,067 INFO L225 Difference]: With dead ends: 1342 [2020-08-22 00:30:49,067 INFO L226 Difference]: Without dead ends: 783 [2020-08-22 00:30:49,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-22 00:30:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-08-22 00:30:49,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 681. [2020-08-22 00:30:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-08-22 00:30:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 812 transitions. [2020-08-22 00:30:49,235 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 812 transitions. Word has length 83 [2020-08-22 00:30:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:49,235 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 812 transitions. [2020-08-22 00:30:49,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:30:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 812 transitions. [2020-08-22 00:30:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 00:30:49,239 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:49,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:49,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:30:49,239 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2020-08-22 00:30:49,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:49,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651347632] [2020-08-22 00:30:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,536 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:30:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:30:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:30:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:30:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:49,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651347632] [2020-08-22 00:30:49,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:49,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 00:30:49,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526918464] [2020-08-22 00:30:49,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 00:30:49,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:49,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 00:30:49,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:30:49,671 INFO L87 Difference]: Start difference. First operand 681 states and 812 transitions. Second operand 9 states. [2020-08-22 00:30:50,892 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:51,176 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:30:51,435 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:51,680 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:52,317 INFO L93 Difference]: Finished difference Result 1456 states and 1829 transitions. [2020-08-22 00:30:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 00:30:52,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-22 00:30:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:52,323 INFO L225 Difference]: With dead ends: 1456 [2020-08-22 00:30:52,324 INFO L226 Difference]: Without dead ends: 803 [2020-08-22 00:30:52,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:30:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-08-22 00:30:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 701. [2020-08-22 00:30:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-22 00:30:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 832 transitions. [2020-08-22 00:30:52,435 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 832 transitions. Word has length 87 [2020-08-22 00:30:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:52,437 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 832 transitions. [2020-08-22 00:30:52,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 00:30:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 832 transitions. [2020-08-22 00:30:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 00:30:52,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:52,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:52,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 00:30:52,441 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:52,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2020-08-22 00:30:52,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:52,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968057684] [2020-08-22 00:30:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,746 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:52,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 00:30:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 00:30:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 00:30:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 00:30:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:52,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968057684] [2020-08-22 00:30:52,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:52,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 00:30:52,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180150825] [2020-08-22 00:30:52,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 00:30:52,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:52,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 00:30:52,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 00:30:52,878 INFO L87 Difference]: Start difference. First operand 701 states and 832 transitions. Second operand 11 states. [2020-08-22 00:30:53,421 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:53,654 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:53,876 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:54,569 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:54,892 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:55,142 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:30:55,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:30:55,872 INFO L93 Difference]: Finished difference Result 1322 states and 1646 transitions. [2020-08-22 00:30:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 00:30:55,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-08-22 00:30:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:30:55,878 INFO L225 Difference]: With dead ends: 1322 [2020-08-22 00:30:55,878 INFO L226 Difference]: Without dead ends: 649 [2020-08-22 00:30:55,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 00:30:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-08-22 00:30:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 576. [2020-08-22 00:30:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-08-22 00:30:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 668 transitions. [2020-08-22 00:30:55,975 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 668 transitions. Word has length 87 [2020-08-22 00:30:55,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:30:55,975 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 668 transitions. [2020-08-22 00:30:55,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 00:30:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 668 transitions. [2020-08-22 00:30:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 00:30:55,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:30:55,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:30:55,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 00:30:55,979 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:30:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:30:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2020-08-22 00:30:55,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:30:55,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946526402] [2020-08-22 00:30:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:30:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,358 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:30:56,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:30:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:30:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:30:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:30:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:30:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:30:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 00:30:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:30:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 00:30:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:30:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:30:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:30:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-22 00:30:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 00:30:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:30:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 00:30:56,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946526402] [2020-08-22 00:30:56,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:30:56,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 00:30:56,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213236038] [2020-08-22 00:30:56,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 00:30:56,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:30:56,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 00:30:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:30:56,622 INFO L87 Difference]: Start difference. First operand 576 states and 668 transitions. Second operand 12 states. [2020-08-22 00:30:57,363 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:58,174 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:30:58,849 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:59,205 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:30:59,466 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:30:59,769 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:00,082 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:01,316 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:01,593 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:02,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:02,206 INFO L93 Difference]: Finished difference Result 1645 states and 2041 transitions. [2020-08-22 00:31:02,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 00:31:02,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-08-22 00:31:02,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:02,214 INFO L225 Difference]: With dead ends: 1645 [2020-08-22 00:31:02,214 INFO L226 Difference]: Without dead ends: 1269 [2020-08-22 00:31:02,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 00:31:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-22 00:31:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1155. [2020-08-22 00:31:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-22 00:31:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1335 transitions. [2020-08-22 00:31:02,420 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1335 transitions. Word has length 91 [2020-08-22 00:31:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:02,422 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1335 transitions. [2020-08-22 00:31:02,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 00:31:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1335 transitions. [2020-08-22 00:31:02,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 00:31:02,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:02,426 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] [2020-08-22 00:31:02,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 00:31:02,426 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2020-08-22 00:31:02,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:02,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062873169] [2020-08-22 00:31:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,735 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:02,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:31:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:31:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:31:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 00:31:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 00:31:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 00:31:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-22 00:31:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-22 00:31:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 00:31:02,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062873169] [2020-08-22 00:31:02,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:31:02,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 00:31:02,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058246280] [2020-08-22 00:31:02,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 00:31:02,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 00:31:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:31:02,979 INFO L87 Difference]: Start difference. First operand 1155 states and 1335 transitions. Second operand 16 states. [2020-08-22 00:31:03,486 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:03,813 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 00:31:04,076 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 00:31:04,332 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 00:31:04,990 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:05,301 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:05,700 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:31:05,999 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:31:06,903 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:07,566 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:07,870 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:08,212 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:08,706 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:31:09,180 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 00:31:09,490 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:09,748 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:10,027 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:10,491 INFO L93 Difference]: Finished difference Result 2146 states and 2551 transitions. [2020-08-22 00:31:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-22 00:31:10,492 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-08-22 00:31:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:10,499 INFO L225 Difference]: With dead ends: 2146 [2020-08-22 00:31:10,500 INFO L226 Difference]: Without dead ends: 1185 [2020-08-22 00:31:10,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-22 00:31:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-08-22 00:31:10,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1065. [2020-08-22 00:31:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-08-22 00:31:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1223 transitions. [2020-08-22 00:31:10,677 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1223 transitions. Word has length 134 [2020-08-22 00:31:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:10,678 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1223 transitions. [2020-08-22 00:31:10,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 00:31:10,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1223 transitions. [2020-08-22 00:31:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-22 00:31:10,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:10,686 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:31:10,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 00:31:10,687 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:10,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:10,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1284254506, now seen corresponding path program 1 times [2020-08-22 00:31:10,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:10,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560104862] [2020-08-22 00:31:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,006 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:11,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:31:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:31:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:31:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:31:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 00:31:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-22 00:31:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-22 00:31:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-22 00:31:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-08-22 00:31:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 00:31:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-08-22 00:31:11,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560104862] [2020-08-22 00:31:11,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:31:11,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 00:31:11,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001061667] [2020-08-22 00:31:11,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 00:31:11,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:11,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 00:31:11,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-22 00:31:11,470 INFO L87 Difference]: Start difference. First operand 1065 states and 1223 transitions. Second operand 16 states. [2020-08-22 00:31:12,789 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 00:31:13,069 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:13,360 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:13,630 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:13,891 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:14,468 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:14,985 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 00:31:15,471 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 00:31:16,095 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:17,848 INFO L93 Difference]: Finished difference Result 2947 states and 3535 transitions. [2020-08-22 00:31:17,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 00:31:17,849 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2020-08-22 00:31:17,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:17,861 INFO L225 Difference]: With dead ends: 2947 [2020-08-22 00:31:17,861 INFO L226 Difference]: Without dead ends: 1803 [2020-08-22 00:31:17,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 00:31:17,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-08-22 00:31:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1431. [2020-08-22 00:31:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-08-22 00:31:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1658 transitions. [2020-08-22 00:31:18,117 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1658 transitions. Word has length 241 [2020-08-22 00:31:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:18,118 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1658 transitions. [2020-08-22 00:31:18,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 00:31:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1658 transitions. [2020-08-22 00:31:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-08-22 00:31:18,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:18,126 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 00:31:18,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 00:31:18,126 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1853664495, now seen corresponding path program 1 times [2020-08-22 00:31:18,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:18,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327643016] [2020-08-22 00:31:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,533 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:31:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:31:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:31:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:31:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:31:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-22 00:31:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-22 00:31:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-22 00:31:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-22 00:31:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-22 00:31:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-22 00:31:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 85 proven. 31 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-22 00:31:18,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327643016] [2020-08-22 00:31:18,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:31:18,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 00:31:18,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177079881] [2020-08-22 00:31:18,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 00:31:18,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:18,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 00:31:18,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-22 00:31:18,872 INFO L87 Difference]: Start difference. First operand 1431 states and 1658 transitions. Second operand 17 states. [2020-08-22 00:31:19,401 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:19,726 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:19,986 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:20,241 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 00:31:20,875 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:21,804 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 00:31:22,184 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:22,449 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:23,098 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:23,723 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:23,961 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 00:31:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:31:24,503 INFO L93 Difference]: Finished difference Result 2569 states and 3040 transitions. [2020-08-22 00:31:24,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-22 00:31:24,504 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 247 [2020-08-22 00:31:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:31:24,512 INFO L225 Difference]: With dead ends: 2569 [2020-08-22 00:31:24,512 INFO L226 Difference]: Without dead ends: 1456 [2020-08-22 00:31:24,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-22 00:31:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-08-22 00:31:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1402. [2020-08-22 00:31:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2020-08-22 00:31:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1608 transitions. [2020-08-22 00:31:24,811 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1608 transitions. Word has length 247 [2020-08-22 00:31:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:31:24,812 INFO L479 AbstractCegarLoop]: Abstraction has 1402 states and 1608 transitions. [2020-08-22 00:31:24,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 00:31:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1608 transitions. [2020-08-22 00:31:24,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-08-22 00:31:24,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:31:24,828 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 00:31:24,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 00:31:24,828 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:31:24,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:31:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash -276065170, now seen corresponding path program 1 times [2020-08-22 00:31:24,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:31:24,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384339264] [2020-08-22 00:31:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:31:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,171 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:31:25,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:31:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:31:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:31:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:31:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:31:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 00:31:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:31:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 00:31:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:31:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 00:31:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:31:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 00:31:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 00:31:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 00:31:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-08-22 00:31:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:31:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-22 00:31:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:31:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:31:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 00:31:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 00:31:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 00:31:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:31:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 92 proven. 26 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-22 00:31:25,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384339264] [2020-08-22 00:31:25,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:31:25,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 00:31:25,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343470649] [2020-08-22 00:31:25,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 00:31:25,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:31:25,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 00:31:25,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-22 00:31:25,567 INFO L87 Difference]: Start difference. First operand 1402 states and 1608 transitions. Second operand 17 states.