/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:46:08,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:46:08,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:46:08,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:46:08,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:46:08,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:46:08,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:46:08,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:46:08,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:46:08,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:46:08,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:46:08,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:46:08,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:46:08,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:46:08,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:46:08,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:46:08,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:46:08,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:46:08,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:46:08,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:46:08,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:46:08,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:46:08,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:46:08,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:46:08,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:46:08,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:46:08,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:46:08,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:46:08,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:46:08,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:46:08,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:46:08,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:46:08,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:46:08,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:46:08,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:46:08,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:46:08,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:46:08,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:46:08,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:46:08,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:46:08,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:46:08,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:46:08,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:46:08,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:46:08,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:46:08,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:46:08,817 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:46:08,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:46:08,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:46:08,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:46:08,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:46:08,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:46:08,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:46:08,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:46:08,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:46:08,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:46:08,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:46:08,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:46:08,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:46:08,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:46:08,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:46:08,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:46:08,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:46:08,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:46:08,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:46:08,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:46:08,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:46:08,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:46:08,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:46:08,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:46:08,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:46:08,823 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=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 17:46:09,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:46:09,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:46:09,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:46:09,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:46:09,122 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:46:09,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-18 17:46:09,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eefe05ab/6fca2b0b170a4d15b4d9fd66da43af44/FLAGf3c8a3a44 [2020-08-18 17:46:09,687 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:46:09,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-18 17:46:09,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eefe05ab/6fca2b0b170a4d15b4d9fd66da43af44/FLAGf3c8a3a44 [2020-08-18 17:46:09,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6eefe05ab/6fca2b0b170a4d15b4d9fd66da43af44 [2020-08-18 17:46:10,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:46:10,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:46:10,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:46:10,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:46:10,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:46:10,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:46:09" (1/1) ... [2020-08-18 17:46:10,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10, skipping insertion in model container [2020-08-18 17:46:10,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:46:09" (1/1) ... [2020-08-18 17:46:10,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:46:10,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:46:10,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:46:10,560 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:46:10,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:46:10,674 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:46:10,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10 WrapperNode [2020-08-18 17:46:10,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:46:10,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:46:10,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:46:10,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:46:10,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... [2020-08-18 17:46:10,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... [2020-08-18 17:46:10,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... [2020-08-18 17:46:10,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... [2020-08-18 17:46:10,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... [2020-08-18 17:46:10,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... [2020-08-18 17:46:10,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... [2020-08-18 17:46:10,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:46:10,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:46:10,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:46:10,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:46:10,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:46:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:46:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:46:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:46:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:46:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:46:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:46:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:46:10,853 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:46:10,853 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:46:10,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:46:10,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 17:46:10,854 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:46:10,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:46:10,854 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:46:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:46:10,855 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:46:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:46:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:46:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:46:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:46:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:46:10,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 17:46:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 17:46:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 17:46:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:46:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:46:10,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:46:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:46:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:46:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:46:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:46:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:46:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:46:10,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:46:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:46:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:46:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:46:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:46:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:46:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:46:10,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:46:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 17:46:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:46:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:46:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:46:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:46:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:46:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:46:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:46:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:46:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:46:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:46:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 17:46:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:46:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:46:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:46:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:46:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:46:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:46:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 17:46:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 17:46:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 17:46:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:46:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:46:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:46:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:46:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 17:46:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:46:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:46:10,867 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:46:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:46:10,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:46:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:46:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:46:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:46:10,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:46:10,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:46:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:46:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:46:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:46:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:46:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:46:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:46:10,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:46:10,872 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:46:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:46:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:46:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:46:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:46:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:46:10,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:46:11,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:46:11,958 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:46:11,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:46:11 BoogieIcfgContainer [2020-08-18 17:46:11,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:46:11,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:46:11,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:46:11,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:46:11,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:46:09" (1/3) ... [2020-08-18 17:46:11,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b39db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:46:11, skipping insertion in model container [2020-08-18 17:46:11,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:46:10" (2/3) ... [2020-08-18 17:46:11,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b39db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:46:11, skipping insertion in model container [2020-08-18 17:46:11,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:46:11" (3/3) ... [2020-08-18 17:46:11,972 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2020-08-18 17:46:11,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:46:11,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:46:12,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:46:12,033 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:46:12,033 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:46:12,033 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:46:12,033 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:46:12,034 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:46:12,034 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:46:12,034 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:46:12,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:46:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-18 17:46:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 17:46:12,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:12,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:12,070 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:12,076 INFO L82 PathProgramCache]: Analyzing trace with hash -583894042, now seen corresponding path program 1 times [2020-08-18 17:46:12,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:12,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893773338] [2020-08-18 17:46:12,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,773 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:12,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:46:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:46:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:46:12,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893773338] [2020-08-18 17:46:12,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:12,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 17:46:12,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624918385] [2020-08-18 17:46:12,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 17:46:12,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:12,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 17:46:12,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:46:12,893 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2020-08-18 17:46:14,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:14,183 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-08-18 17:46:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 17:46:14,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 17:46:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:14,201 INFO L225 Difference]: With dead ends: 320 [2020-08-18 17:46:14,201 INFO L226 Difference]: Without dead ends: 173 [2020-08-18 17:46:14,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 17:46:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-18 17:46:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-08-18 17:46:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 17:46:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-18 17:46:14,303 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-08-18 17:46:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:14,304 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-18 17:46:14,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 17:46:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-18 17:46:14,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 17:46:14,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:14,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:14,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:46:14,309 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:14,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2008699999, now seen corresponding path program 1 times [2020-08-18 17:46:14,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:14,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747795919] [2020-08-18 17:46:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,663 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:46:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 17:46:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:46:14,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747795919] [2020-08-18 17:46:14,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:14,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:46:14,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778903210] [2020-08-18 17:46:14,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:46:14,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:14,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:46:14,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:46:14,708 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-08-18 17:46:15,131 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:15,983 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-08-18 17:46:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 17:46:15,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 17:46:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:15,993 INFO L225 Difference]: With dead ends: 243 [2020-08-18 17:46:15,994 INFO L226 Difference]: Without dead ends: 157 [2020-08-18 17:46:15,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:46:16,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-18 17:46:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-08-18 17:46:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 17:46:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-18 17:46:16,068 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-08-18 17:46:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:16,069 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-18 17:46:16,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:46:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-18 17:46:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 17:46:16,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:16,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:16,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:46:16,072 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:16,072 INFO L82 PathProgramCache]: Analyzing trace with hash 940393630, now seen corresponding path program 1 times [2020-08-18 17:46:16,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:16,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126669339] [2020-08-18 17:46:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,376 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:46:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:46:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:46:16,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126669339] [2020-08-18 17:46:16,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:16,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:46:16,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712240653] [2020-08-18 17:46:16,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:46:16,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:16,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:46:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:46:16,448 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 5 states. [2020-08-18 17:46:16,727 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:17,362 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:18,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:18,839 INFO L93 Difference]: Finished difference Result 440 states and 546 transitions. [2020-08-18 17:46:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:46:18,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 17:46:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:18,846 INFO L225 Difference]: With dead ends: 440 [2020-08-18 17:46:18,847 INFO L226 Difference]: Without dead ends: 335 [2020-08-18 17:46:18,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:46:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-18 17:46:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-08-18 17:46:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-18 17:46:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-08-18 17:46:18,963 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-08-18 17:46:18,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:18,963 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-08-18 17:46:18,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:46:18,963 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-08-18 17:46:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 17:46:18,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:18,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:18,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:46:18,967 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:18,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:18,967 INFO L82 PathProgramCache]: Analyzing trace with hash -885199720, now seen corresponding path program 1 times [2020-08-18 17:46:18,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:18,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302607688] [2020-08-18 17:46:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,271 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:46:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 17:46:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:46:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:46:19,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302607688] [2020-08-18 17:46:19,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:19,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:46:19,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446429963] [2020-08-18 17:46:19,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:46:19,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:19,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:46:19,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:46:19,405 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 12 states. [2020-08-18 17:46:19,804 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:20,129 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:20,388 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:20,643 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:21,181 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:22,061 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:22,476 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:22,801 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:23,082 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:23,395 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:23,763 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:24,129 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:24,538 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:26,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:26,138 INFO L93 Difference]: Finished difference Result 1101 states and 1516 transitions. [2020-08-18 17:46:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 17:46:26,139 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-18 17:46:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:26,152 INFO L225 Difference]: With dead ends: 1101 [2020-08-18 17:46:26,152 INFO L226 Difference]: Without dead ends: 853 [2020-08-18 17:46:26,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 17:46:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-18 17:46:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 756. [2020-08-18 17:46:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-08-18 17:46:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 962 transitions. [2020-08-18 17:46:26,342 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 962 transitions. Word has length 57 [2020-08-18 17:46:26,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:26,343 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 962 transitions. [2020-08-18 17:46:26,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:46:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 962 transitions. [2020-08-18 17:46:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 17:46:26,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:26,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:26,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:46:26,349 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1426922018, now seen corresponding path program 1 times [2020-08-18 17:46:26,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:26,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124022351] [2020-08-18 17:46:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,630 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:26,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:46:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:46:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:46:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 17:46:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 17:46:26,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124022351] [2020-08-18 17:46:26,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:46:26,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 17:46:26,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266874673] [2020-08-18 17:46:26,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 17:46:26,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:26,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 17:46:26,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 17:46:26,761 INFO L87 Difference]: Start difference. First operand 756 states and 962 transitions. Second operand 6 states. [2020-08-18 17:46:27,086 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:29,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:29,095 INFO L93 Difference]: Finished difference Result 1819 states and 2481 transitions. [2020-08-18 17:46:29,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 17:46:29,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 17:46:29,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:29,104 INFO L225 Difference]: With dead ends: 1819 [2020-08-18 17:46:29,107 INFO L226 Difference]: Without dead ends: 1087 [2020-08-18 17:46:29,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:46:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-08-18 17:46:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 996. [2020-08-18 17:46:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-08-18 17:46:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1256 transitions. [2020-08-18 17:46:29,315 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1256 transitions. Word has length 61 [2020-08-18 17:46:29,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:29,315 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1256 transitions. [2020-08-18 17:46:29,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 17:46:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1256 transitions. [2020-08-18 17:46:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 17:46:29,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:29,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:29,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:46:29,319 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:29,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:29,320 INFO L82 PathProgramCache]: Analyzing trace with hash -50759536, now seen corresponding path program 1 times [2020-08-18 17:46:29,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:29,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820422369] [2020-08-18 17:46:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,665 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:29,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:46:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:46:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 17:46:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 17:46:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 17:46:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 17:46:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 17:46:29,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820422369] [2020-08-18 17:46:29,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:29,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:46:29,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180285874] [2020-08-18 17:46:29,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:46:29,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:29,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:46:29,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:46:29,810 INFO L87 Difference]: Start difference. First operand 996 states and 1256 transitions. Second operand 10 states. [2020-08-18 17:46:30,463 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-18 17:46:31,078 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:32,959 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:34,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:34,768 INFO L93 Difference]: Finished difference Result 1937 states and 2549 transitions. [2020-08-18 17:46:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 17:46:34,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-18 17:46:34,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:34,777 INFO L225 Difference]: With dead ends: 1937 [2020-08-18 17:46:34,777 INFO L226 Difference]: Without dead ends: 1216 [2020-08-18 17:46:34,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-18 17:46:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-08-18 17:46:34,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1103. [2020-08-18 17:46:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-18 17:46:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1367 transitions. [2020-08-18 17:46:34,970 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1367 transitions. Word has length 89 [2020-08-18 17:46:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:34,971 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1367 transitions. [2020-08-18 17:46:34,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:46:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1367 transitions. [2020-08-18 17:46:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 17:46:34,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:34,976 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:34,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:46:34,976 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:34,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1811638207, now seen corresponding path program 1 times [2020-08-18 17:46:34,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:34,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621602023] [2020-08-18 17:46:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,225 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:35,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:46:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:46:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:46:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 17:46:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 17:46:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:46:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:46:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 17:46:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 17:46:35,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621602023] [2020-08-18 17:46:35,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:35,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 17:46:35,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749015182] [2020-08-18 17:46:35,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:46:35,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:46:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:46:35,436 INFO L87 Difference]: Start difference. First operand 1103 states and 1367 transitions. Second operand 9 states. [2020-08-18 17:46:36,419 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:36,646 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:46:36,904 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:37,835 INFO L93 Difference]: Finished difference Result 2034 states and 2650 transitions. [2020-08-18 17:46:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:46:37,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-08-18 17:46:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:37,849 INFO L225 Difference]: With dead ends: 2034 [2020-08-18 17:46:37,849 INFO L226 Difference]: Without dead ends: 1229 [2020-08-18 17:46:37,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:46:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-08-18 17:46:38,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1103. [2020-08-18 17:46:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-18 17:46:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1365 transitions. [2020-08-18 17:46:38,181 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1365 transitions. Word has length 134 [2020-08-18 17:46:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:38,181 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1365 transitions. [2020-08-18 17:46:38,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:46:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1365 transitions. [2020-08-18 17:46:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-18 17:46:38,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:38,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:38,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:46:38,186 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:38,186 INFO L82 PathProgramCache]: Analyzing trace with hash 622271142, now seen corresponding path program 1 times [2020-08-18 17:46:38,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:38,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454111638] [2020-08-18 17:46:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,423 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:38,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:46:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:46:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 17:46:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 17:46:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:46:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 17:46:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 17:46:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-18 17:46:38,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454111638] [2020-08-18 17:46:38,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:38,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:46:38,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121588301] [2020-08-18 17:46:38,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:46:38,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:46:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:46:38,610 INFO L87 Difference]: Start difference. First operand 1103 states and 1365 transitions. Second operand 10 states. [2020-08-18 17:46:39,644 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:39,881 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:40,146 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:40,374 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:41,441 INFO L93 Difference]: Finished difference Result 2316 states and 2962 transitions. [2020-08-18 17:46:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:46:41,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-18 17:46:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:41,449 INFO L225 Difference]: With dead ends: 2316 [2020-08-18 17:46:41,450 INFO L226 Difference]: Without dead ends: 1237 [2020-08-18 17:46:41,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:46:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-08-18 17:46:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1123. [2020-08-18 17:46:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-18 17:46:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1387 transitions. [2020-08-18 17:46:41,757 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1387 transitions. Word has length 130 [2020-08-18 17:46:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:41,758 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1387 transitions. [2020-08-18 17:46:41,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:46:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1387 transitions. [2020-08-18 17:46:41,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 17:46:41,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:41,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:41,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:46:41,764 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:41,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:41,765 INFO L82 PathProgramCache]: Analyzing trace with hash 669135741, now seen corresponding path program 1 times [2020-08-18 17:46:41,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:41,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052917333] [2020-08-18 17:46:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,081 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:46:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:46:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:46:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 17:46:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 17:46:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:46:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:46:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 17:46:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 17:46:42,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052917333] [2020-08-18 17:46:42,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:42,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:46:42,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807537742] [2020-08-18 17:46:42,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:46:42,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:46:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:46:42,273 INFO L87 Difference]: Start difference. First operand 1123 states and 1387 transitions. Second operand 10 states. [2020-08-18 17:46:44,125 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:44,381 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:46:44,613 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:44,841 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:45,308 INFO L93 Difference]: Finished difference Result 2082 states and 2656 transitions. [2020-08-18 17:46:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 17:46:45,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 17:46:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:45,316 INFO L225 Difference]: With dead ends: 2082 [2020-08-18 17:46:45,316 INFO L226 Difference]: Without dead ends: 1273 [2020-08-18 17:46:45,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:46:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-08-18 17:46:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1159. [2020-08-18 17:46:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-18 17:46:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1435 transitions. [2020-08-18 17:46:45,556 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1435 transitions. Word has length 134 [2020-08-18 17:46:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:45,557 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1435 transitions. [2020-08-18 17:46:45,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:46:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1435 transitions. [2020-08-18 17:46:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 17:46:45,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:45,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:45,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:46:45,565 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:45,565 INFO L82 PathProgramCache]: Analyzing trace with hash 159662651, now seen corresponding path program 1 times [2020-08-18 17:46:45,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:45,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018055973] [2020-08-18 17:46:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,881 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:45,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:46:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:46:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:46:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 17:46:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 17:46:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:46:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:46:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:45,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 17:46:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 17:46:46,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018055973] [2020-08-18 17:46:46,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:46,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 17:46:46,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467731779] [2020-08-18 17:46:46,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 17:46:46,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:46,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 17:46:46,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 17:46:46,047 INFO L87 Difference]: Start difference. First operand 1159 states and 1435 transitions. Second operand 10 states. [2020-08-18 17:46:46,564 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:48,713 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:48,963 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:49,209 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:49,431 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:49,699 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:50,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:50,302 INFO L93 Difference]: Finished difference Result 1294 states and 1661 transitions. [2020-08-18 17:46:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 17:46:50,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-18 17:46:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:50,311 INFO L225 Difference]: With dead ends: 1294 [2020-08-18 17:46:50,311 INFO L226 Difference]: Without dead ends: 1291 [2020-08-18 17:46:50,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:46:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-08-18 17:46:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1159. [2020-08-18 17:46:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-18 17:46:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1430 transitions. [2020-08-18 17:46:50,539 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1430 transitions. Word has length 134 [2020-08-18 17:46:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:50,540 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1430 transitions. [2020-08-18 17:46:50,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 17:46:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1430 transitions. [2020-08-18 17:46:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-18 17:46:50,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:50,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:50,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:46:50,545 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:50,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1152526356, now seen corresponding path program 1 times [2020-08-18 17:46:50,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:50,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867001971] [2020-08-18 17:46:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,838 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:46:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:46:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:46:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 17:46:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:50,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 17:46:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:51,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:51,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:46:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:51,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-18 17:46:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:51,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 17:46:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 17:46:51,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867001971] [2020-08-18 17:46:51,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:51,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 17:46:51,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722278354] [2020-08-18 17:46:51,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:46:51,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:51,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:46:51,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:46:51,130 INFO L87 Difference]: Start difference. First operand 1159 states and 1430 transitions. Second operand 12 states. [2020-08-18 17:46:51,683 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:52,238 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:52,768 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:53,029 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:53,261 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:53,485 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 17:46:53,761 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:54,033 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:46:55,885 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:46:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:46:57,409 INFO L93 Difference]: Finished difference Result 2783 states and 3743 transitions. [2020-08-18 17:46:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 17:46:57,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-18 17:46:57,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:46:57,421 INFO L225 Difference]: With dead ends: 2783 [2020-08-18 17:46:57,422 INFO L226 Difference]: Without dead ends: 1944 [2020-08-18 17:46:57,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 17:46:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-08-18 17:46:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1551. [2020-08-18 17:46:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1551 states. [2020-08-18 17:46:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1933 transitions. [2020-08-18 17:46:57,748 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1933 transitions. Word has length 138 [2020-08-18 17:46:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:46:57,751 INFO L479 AbstractCegarLoop]: Abstraction has 1551 states and 1933 transitions. [2020-08-18 17:46:57,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:46:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1933 transitions. [2020-08-18 17:46:57,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 17:46:57,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:46:57,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:46:57,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:46:57,756 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:46:57,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:46:57,757 INFO L82 PathProgramCache]: Analyzing trace with hash -782495877, now seen corresponding path program 1 times [2020-08-18 17:46:57,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:46:57,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586823695] [2020-08-18 17:46:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:46:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,061 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:46:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:46:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:46:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:46:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:46:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:46:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:46:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:46:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:46:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 17:46:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 17:46:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:46:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:46:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:46:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 17:46:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 17:46:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:46:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-18 17:46:58,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586823695] [2020-08-18 17:46:58,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:46:58,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 17:46:58,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176910804] [2020-08-18 17:46:58,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:46:58,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:46:58,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:46:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:46:58,262 INFO L87 Difference]: Start difference. First operand 1551 states and 1933 transitions. Second operand 12 states. [2020-08-18 17:46:58,842 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:59,106 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:46:59,324 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:47:00,028 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:47:00,297 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:47:00,537 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:47:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:47:01,627 INFO L93 Difference]: Finished difference Result 2923 states and 3762 transitions. [2020-08-18 17:47:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:47:01,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-18 17:47:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:47:01,634 INFO L225 Difference]: With dead ends: 2923 [2020-08-18 17:47:01,635 INFO L226 Difference]: Without dead ends: 1396 [2020-08-18 17:47:01,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:47:01,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-08-18 17:47:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1328. [2020-08-18 17:47:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-18 17:47:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1625 transitions. [2020-08-18 17:47:01,923 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1625 transitions. Word has length 134 [2020-08-18 17:47:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:47:01,923 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1625 transitions. [2020-08-18 17:47:01,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:47:01,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1625 transitions. [2020-08-18 17:47:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-18 17:47:01,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:47:01,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:47:01,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:47:01,929 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:47:01,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:47:01,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2082208677, now seen corresponding path program 2 times [2020-08-18 17:47:01,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:47:01,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053802206] [2020-08-18 17:47:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:47:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,247 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 17:47:02,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:47:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:47:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:47:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:47:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:47:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 17:47:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:47:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:47:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 17:47:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 17:47:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:47:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:47:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:47:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 17:47:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 17:47:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:47:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:47:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:47:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 17:47:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 17:47:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:47:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 17:47:02,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053802206] [2020-08-18 17:47:02,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:47:02,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 17:47:02,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688269296] [2020-08-18 17:47:02,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 17:47:02,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:47:02,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 17:47:02,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:47:02,593 INFO L87 Difference]: Start difference. First operand 1328 states and 1625 transitions. Second operand 13 states. [2020-08-18 17:47:03,719 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:47:03,997 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 17:47:05,902 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:47:06,174 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:06,402 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:47:06,820 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 17:47:08,676 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189