/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:36:41,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:36:41,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:36:41,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:36:41,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:36:41,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:36:41,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:36:41,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:36:41,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:36:41,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:36:41,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:36:41,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:36:41,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:36:41,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:36:41,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:36:41,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:36:41,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:36:41,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:36:41,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:36:41,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:36:41,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:36:41,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:36:41,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:36:41,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:36:41,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:36:41,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:36:41,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:36:41,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:36:41,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:36:41,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:36:41,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:36:41,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:36:41,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:36:41,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:36:41,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:36:41,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:36:41,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:36:41,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:36:41,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:36:41,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:36:41,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:36:41,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:36:41,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:36:41,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:36:41,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:36:41,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:36:41,835 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:36:41,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:36:41,835 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:36:41,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:36:41,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:36:41,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:36:41,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:36:41,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:36:41,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:36:41,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:36:41,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:36:41,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:36:41,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:36:41,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:36:41,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:36:41,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:36:41,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:36:41,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:36:41,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:36:41,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:36:41,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:36:41,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:36:41,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:36:41,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:36:41,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:36:41,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:36:42,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:36:42,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:36:42,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:36:42,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:36:42,156 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:36:42,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-21 15:36:42,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb2ed760/7702eeca3c2a40948c2f83c8d0c65e49/FLAGd69852836 [2020-08-21 15:36:42,756 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:36:42,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-21 15:36:42,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb2ed760/7702eeca3c2a40948c2f83c8d0c65e49/FLAGd69852836 [2020-08-21 15:36:43,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb2ed760/7702eeca3c2a40948c2f83c8d0c65e49 [2020-08-21 15:36:43,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:36:43,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:36:43,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:43,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:36:43,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:36:43,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43, skipping insertion in model container [2020-08-21 15:36:43,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:36:43,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:36:43,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:43,664 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:36:43,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:43,816 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:36:43,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43 WrapperNode [2020-08-21 15:36:43,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:43,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:36:43,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:36:43,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:36:43,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... [2020-08-21 15:36:43,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:36:43,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:36:43,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:36:43,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:36:43,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:36:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:36:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:36:43,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:36:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:36:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:36:43,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:36:43,971 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:36:43,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:36:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:36:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:36:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:36:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:36:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:36:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:36:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:36:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:36:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:36:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:36:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:36:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:36:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:36:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 15:36:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:36:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:36:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:36:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:36:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:36:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:36:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:36:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:36:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:36:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:36:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:36:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:36:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:36:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:36:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:36:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:36:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:36:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:36:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:36:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:36:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:36:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:36:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:36:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:36:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:36:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:36:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:36:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:36:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:36:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:36:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:36:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:36:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 15:36:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:36:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:36:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:36:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:36:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:36:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:36:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:36:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:36:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:36:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:36:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:36:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:36:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:36:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:36:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:36:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:36:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:36:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:36:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:36:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:36:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:36:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:36:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:36:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:36:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:36:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:36:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:36:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:36:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:36:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:36:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:36:43,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:36:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:36:44,929 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:36:44,929 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:36:44,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:44 BoogieIcfgContainer [2020-08-21 15:36:44,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:36:44,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:36:44,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:36:44,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:36:44,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:36:43" (1/3) ... [2020-08-21 15:36:44,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f54ecad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:44, skipping insertion in model container [2020-08-21 15:36:44,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:43" (2/3) ... [2020-08-21 15:36:44,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f54ecad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:44, skipping insertion in model container [2020-08-21 15:36:44,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:44" (3/3) ... [2020-08-21 15:36:44,943 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2020-08-21 15:36:44,954 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:36:44,961 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:36:44,975 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:36:45,000 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:36:45,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:36:45,000 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:36:45,001 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:36:45,001 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:36:45,001 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:36:45,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:36:45,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:36:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-21 15:36:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:36:45,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:45,033 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] [2020-08-21 15:36:45,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:45,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash -583894042, now seen corresponding path program 1 times [2020-08-21 15:36:45,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:45,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132377534] [2020-08-21 15:36:45,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,717 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:36:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:36:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:45,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132377534] [2020-08-21 15:36:45,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:45,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:36:45,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103596751] [2020-08-21 15:36:45,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:36:45,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:45,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:36:45,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:36:45,829 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2020-08-21 15:36:47,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:47,026 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-08-21 15:36:47,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:36:47,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:36:47,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:47,044 INFO L225 Difference]: With dead ends: 320 [2020-08-21 15:36:47,044 INFO L226 Difference]: Without dead ends: 173 [2020-08-21 15:36:47,049 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 [2020-08-21 15:36:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-21 15:36:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-08-21 15:36:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-21 15:36:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-21 15:36:47,170 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-08-21 15:36:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:47,171 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-21 15:36:47,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:36:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-21 15:36:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:36:47,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:47,183 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] [2020-08-21 15:36:47,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:36:47,184 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:47,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:47,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2008699999, now seen corresponding path program 1 times [2020-08-21 15:36:47,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:47,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598498561] [2020-08-21 15:36:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,559 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:47,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:36:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:36:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:47,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598498561] [2020-08-21 15:36:47,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:47,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:36:47,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568725499] [2020-08-21 15:36:47,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:36:47,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:47,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:36:47,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:36:47,632 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-08-21 15:36:48,127 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:49,095 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-08-21 15:36:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:36:49,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:36:49,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:49,104 INFO L225 Difference]: With dead ends: 243 [2020-08-21 15:36:49,104 INFO L226 Difference]: Without dead ends: 157 [2020-08-21 15:36:49,106 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 [2020-08-21 15:36:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-21 15:36:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-08-21 15:36:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-21 15:36:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-21 15:36:49,146 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-08-21 15:36:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:49,147 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-21 15:36:49,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:36:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-21 15:36:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 15:36:49,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:49,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:49,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:36:49,149 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash 940393630, now seen corresponding path program 1 times [2020-08-21 15:36:49,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:49,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660788009] [2020-08-21 15:36:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,455 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:36:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:36:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:49,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660788009] [2020-08-21 15:36:49,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:49,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:36:49,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180319974] [2020-08-21 15:36:49,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:36:49,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:49,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:36:49,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:36:49,580 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 5 states. [2020-08-21 15:36:49,890 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:50,547 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:52,114 INFO L93 Difference]: Finished difference Result 440 states and 546 transitions. [2020-08-21 15:36:52,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:36:52,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 15:36:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:52,120 INFO L225 Difference]: With dead ends: 440 [2020-08-21 15:36:52,120 INFO L226 Difference]: Without dead ends: 335 [2020-08-21 15:36:52,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:36:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-21 15:36:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-08-21 15:36:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-21 15:36:52,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-08-21 15:36:52,234 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-08-21 15:36:52,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:52,234 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-08-21 15:36:52,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:36:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-08-21 15:36:52,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 15:36:52,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:52,236 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] [2020-08-21 15:36:52,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:36:52,237 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -885199720, now seen corresponding path program 1 times [2020-08-21 15:36:52,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:52,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056168691] [2020-08-21 15:36:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,574 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:36:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:36:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 15:36:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:52,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056168691] [2020-08-21 15:36:52,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:52,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:36:52,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122462135] [2020-08-21 15:36:52,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:36:52,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:52,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:36:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:36:52,681 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 12 states. [2020-08-21 15:36:53,128 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:53,480 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:53,741 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:53,963 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:54,509 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:55,414 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:55,822 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:56,138 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:56,426 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:56,734 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:57,096 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:57,441 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:57,849 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:59,407 INFO L93 Difference]: Finished difference Result 1101 states and 1516 transitions. [2020-08-21 15:36:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 15:36:59,408 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-21 15:36:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:59,430 INFO L225 Difference]: With dead ends: 1101 [2020-08-21 15:36:59,430 INFO L226 Difference]: Without dead ends: 853 [2020-08-21 15:36:59,435 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 [2020-08-21 15:36:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-21 15:36:59,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 756. [2020-08-21 15:36:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-08-21 15:36:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 962 transitions. [2020-08-21 15:36:59,631 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 962 transitions. Word has length 57 [2020-08-21 15:36:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:59,632 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 962 transitions. [2020-08-21 15:36:59,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:36:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 962 transitions. [2020-08-21 15:36:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 15:36:59,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:59,635 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] [2020-08-21 15:36:59,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:36:59,636 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1426922018, now seen corresponding path program 1 times [2020-08-21 15:36:59,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:59,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895834967] [2020-08-21 15:36:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,902 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:36:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:36:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 15:36:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 15:36:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:59,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895834967] [2020-08-21 15:36:59,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:59,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:36:59,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950339795] [2020-08-21 15:36:59,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:36:59,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:59,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:36:59,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:36:59,978 INFO L87 Difference]: Start difference. First operand 756 states and 962 transitions. Second operand 6 states. [2020-08-21 15:37:00,308 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:02,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:02,247 INFO L93 Difference]: Finished difference Result 1819 states and 2481 transitions. [2020-08-21 15:37:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:37:02,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 15:37:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:02,258 INFO L225 Difference]: With dead ends: 1819 [2020-08-21 15:37:02,261 INFO L226 Difference]: Without dead ends: 1087 [2020-08-21 15:37:02,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:37:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-08-21 15:37:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 996. [2020-08-21 15:37:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-08-21 15:37:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1256 transitions. [2020-08-21 15:37:02,493 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1256 transitions. Word has length 61 [2020-08-21 15:37:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:02,494 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1256 transitions. [2020-08-21 15:37:02,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:37:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1256 transitions. [2020-08-21 15:37:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 15:37:02,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:02,498 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] [2020-08-21 15:37:02,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:37:02,499 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:02,500 INFO L82 PathProgramCache]: Analyzing trace with hash -50759536, now seen corresponding path program 1 times [2020-08-21 15:37:02,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:02,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525041173] [2020-08-21 15:37:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,828 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:02,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:37:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 15:37:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 15:37:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:02,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 15:37:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:37:03,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525041173] [2020-08-21 15:37:03,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:03,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:37:03,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986198997] [2020-08-21 15:37:03,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:37:03,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:03,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:37:03,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:37:03,016 INFO L87 Difference]: Start difference. First operand 996 states and 1256 transitions. Second operand 10 states. [2020-08-21 15:37:03,682 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 15:37:04,262 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:06,184 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:08,207 INFO L93 Difference]: Finished difference Result 1937 states and 2549 transitions. [2020-08-21 15:37:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 15:37:08,207 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 15:37:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:08,219 INFO L225 Difference]: With dead ends: 1937 [2020-08-21 15:37:08,219 INFO L226 Difference]: Without dead ends: 1216 [2020-08-21 15:37:08,223 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 [2020-08-21 15:37:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-08-21 15:37:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1103. [2020-08-21 15:37:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-21 15:37:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1367 transitions. [2020-08-21 15:37:08,456 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1367 transitions. Word has length 89 [2020-08-21 15:37:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:08,457 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1367 transitions. [2020-08-21 15:37:08,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:37:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1367 transitions. [2020-08-21 15:37:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 15:37:08,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:08,463 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] [2020-08-21 15:37:08,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:37:08,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:08,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1811638207, now seen corresponding path program 1 times [2020-08-21 15:37:08,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:08,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626187289] [2020-08-21 15:37:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,726 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:08,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:37:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:37:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 15:37:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 15:37:08,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626187289] [2020-08-21 15:37:08,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:08,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 15:37:08,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621068623] [2020-08-21 15:37:08,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:37:08,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:08,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:37:08,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:37:08,955 INFO L87 Difference]: Start difference. First operand 1103 states and 1367 transitions. Second operand 9 states. [2020-08-21 15:37:10,087 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:10,311 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:37:10,574 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:11,563 INFO L93 Difference]: Finished difference Result 2034 states and 2650 transitions. [2020-08-21 15:37:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:37:11,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-08-21 15:37:11,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:11,575 INFO L225 Difference]: With dead ends: 2034 [2020-08-21 15:37:11,575 INFO L226 Difference]: Without dead ends: 1229 [2020-08-21 15:37:11,580 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 [2020-08-21 15:37:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-08-21 15:37:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1103. [2020-08-21 15:37:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-21 15:37:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1365 transitions. [2020-08-21 15:37:11,859 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1365 transitions. Word has length 134 [2020-08-21 15:37:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:11,860 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1365 transitions. [2020-08-21 15:37:11,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:37:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1365 transitions. [2020-08-21 15:37:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 15:37:11,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:11,864 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] [2020-08-21 15:37:11,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:37:11,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash 622271142, now seen corresponding path program 1 times [2020-08-21 15:37:11,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:11,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84688244] [2020-08-21 15:37:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,117 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:37:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 15:37:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 15:37:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:37:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 15:37:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 15:37:12,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84688244] [2020-08-21 15:37:12,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:12,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:37:12,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269944787] [2020-08-21 15:37:12,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:37:12,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:12,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:37:12,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:37:12,277 INFO L87 Difference]: Start difference. First operand 1103 states and 1365 transitions. Second operand 10 states. [2020-08-21 15:37:13,293 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:13,528 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:13,809 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:14,050 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:15,139 INFO L93 Difference]: Finished difference Result 2316 states and 2962 transitions. [2020-08-21 15:37:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:37:15,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-21 15:37:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:15,150 INFO L225 Difference]: With dead ends: 2316 [2020-08-21 15:37:15,151 INFO L226 Difference]: Without dead ends: 1237 [2020-08-21 15:37:15,155 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 [2020-08-21 15:37:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-08-21 15:37:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1123. [2020-08-21 15:37:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-21 15:37:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1387 transitions. [2020-08-21 15:37:15,419 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1387 transitions. Word has length 130 [2020-08-21 15:37:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:15,419 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1387 transitions. [2020-08-21 15:37:15,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:37:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1387 transitions. [2020-08-21 15:37:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 15:37:15,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:15,427 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] [2020-08-21 15:37:15,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:37:15,428 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:15,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:15,429 INFO L82 PathProgramCache]: Analyzing trace with hash 669135741, now seen corresponding path program 1 times [2020-08-21 15:37:15,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:15,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704914998] [2020-08-21 15:37:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,804 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:15,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:37:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:37:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:15,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 15:37:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 15:37:16,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704914998] [2020-08-21 15:37:16,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:16,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:37:16,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3950159] [2020-08-21 15:37:16,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:37:16,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:16,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:37:16,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:37:16,008 INFO L87 Difference]: Start difference. First operand 1123 states and 1387 transitions. Second operand 10 states. [2020-08-21 15:37:17,716 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:17,982 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:37:18,258 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:18,504 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:18,945 INFO L93 Difference]: Finished difference Result 2082 states and 2656 transitions. [2020-08-21 15:37:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:37:18,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 15:37:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:18,955 INFO L225 Difference]: With dead ends: 2082 [2020-08-21 15:37:18,955 INFO L226 Difference]: Without dead ends: 1273 [2020-08-21 15:37:18,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:37:18,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-08-21 15:37:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1159. [2020-08-21 15:37:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-21 15:37:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1435 transitions. [2020-08-21 15:37:19,180 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1435 transitions. Word has length 134 [2020-08-21 15:37:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:19,182 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1435 transitions. [2020-08-21 15:37:19,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:37:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1435 transitions. [2020-08-21 15:37:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-21 15:37:19,186 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:19,186 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] [2020-08-21 15:37:19,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:37:19,186 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:19,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:19,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1029704414, now seen corresponding path program 1 times [2020-08-21 15:37:19,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:19,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556433951] [2020-08-21 15:37:19,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,486 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:37:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 15:37:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 15:37:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:37:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 15:37:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 15:37:19,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556433951] [2020-08-21 15:37:19,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:19,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:37:19,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18257426] [2020-08-21 15:37:19,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:37:19,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:19,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:37:19,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:19,742 INFO L87 Difference]: Start difference. First operand 1159 states and 1435 transitions. Second operand 12 states. [2020-08-21 15:37:20,670 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:21,008 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:21,227 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:21,870 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:22,125 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:22,358 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:23,315 INFO L93 Difference]: Finished difference Result 2179 states and 2777 transitions. [2020-08-21 15:37:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:37:23,316 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-21 15:37:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:23,322 INFO L225 Difference]: With dead ends: 2179 [2020-08-21 15:37:23,323 INFO L226 Difference]: Without dead ends: 1044 [2020-08-21 15:37:23,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:37:23,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-08-21 15:37:23,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 986. [2020-08-21 15:37:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-08-21 15:37:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1188 transitions. [2020-08-21 15:37:23,542 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1188 transitions. Word has length 130 [2020-08-21 15:37:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:23,543 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1188 transitions. [2020-08-21 15:37:23,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:37:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1188 transitions. [2020-08-21 15:37:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 15:37:23,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:23,549 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] [2020-08-21 15:37:23,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:37:23,549 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:23,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:23,550 INFO L82 PathProgramCache]: Analyzing trace with hash 159662651, now seen corresponding path program 1 times [2020-08-21 15:37:23,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:23,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375138810] [2020-08-21 15:37:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,875 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:23,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:37:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:37:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-21 15:37:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:23,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-21 15:37:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 15:37:24,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375138810] [2020-08-21 15:37:24,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:24,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:37:24,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122357260] [2020-08-21 15:37:24,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:37:24,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:24,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:37:24,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:37:24,023 INFO L87 Difference]: Start difference. First operand 986 states and 1188 transitions. Second operand 10 states. [2020-08-21 15:37:24,625 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:26,289 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:26,532 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:26,758 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:26,986 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:27,254 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:37:27,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:27,706 INFO L93 Difference]: Finished difference Result 1065 states and 1310 transitions. [2020-08-21 15:37:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:37:27,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-21 15:37:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:27,714 INFO L225 Difference]: With dead ends: 1065 [2020-08-21 15:37:27,714 INFO L226 Difference]: Without dead ends: 1062 [2020-08-21 15:37:27,715 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 [2020-08-21 15:37:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-08-21 15:37:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 986. [2020-08-21 15:37:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-08-21 15:37:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1183 transitions. [2020-08-21 15:37:27,924 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1183 transitions. Word has length 134 [2020-08-21 15:37:27,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:27,925 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1183 transitions. [2020-08-21 15:37:27,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:37:27,925 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1183 transitions. [2020-08-21 15:37:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-21 15:37:27,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:27,928 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] [2020-08-21 15:37:27,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:37:27,929 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:27,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1152526356, now seen corresponding path program 1 times [2020-08-21 15:37:27,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:27,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144619812] [2020-08-21 15:37:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,191 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:37:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 15:37:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 15:37:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-21 15:37:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 15:37:28,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144619812] [2020-08-21 15:37:28,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:28,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:37:28,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70673240] [2020-08-21 15:37:28,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:37:28,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:28,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:37:28,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:37:28,399 INFO L87 Difference]: Start difference. First operand 986 states and 1183 transitions. Second operand 12 states. [2020-08-21 15:37:28,919 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:29,478 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:30,011 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:30,278 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:30,549 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:30,774 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:31,047 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:31,297 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:33,034 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:33,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:33,859 INFO L93 Difference]: Finished difference Result 2393 states and 3102 transitions. [2020-08-21 15:37:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 15:37:33,860 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-21 15:37:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:33,871 INFO L225 Difference]: With dead ends: 2393 [2020-08-21 15:37:33,872 INFO L226 Difference]: Without dead ends: 1590 [2020-08-21 15:37:33,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 15:37:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-08-21 15:37:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1328. [2020-08-21 15:37:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-21 15:37:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1625 transitions. [2020-08-21 15:37:34,151 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1625 transitions. Word has length 138 [2020-08-21 15:37:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:34,152 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1625 transitions. [2020-08-21 15:37:34,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:37:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1625 transitions. [2020-08-21 15:37:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 15:37:34,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:34,157 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] [2020-08-21 15:37:34,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:37:34,158 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:34,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash 2082208677, now seen corresponding path program 2 times [2020-08-21 15:37:34,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:34,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189215319] [2020-08-21 15:37:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,439 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:37:34,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:37:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:37:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:37:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:37:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:37:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:37:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:37:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:37:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 15:37:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:37:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:37:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 15:37:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 15:37:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:37:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:37:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:37:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-21 15:37:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-21 15:37:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:37:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-21 15:37:34,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189215319] [2020-08-21 15:37:34,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:37:34,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:37:34,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324442744] [2020-08-21 15:37:34,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:37:34,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:37:34,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:37:34,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:37:34,805 INFO L87 Difference]: Start difference. First operand 1328 states and 1625 transitions. Second operand 13 states. [2020-08-21 15:37:35,934 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:36,234 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:38,145 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:37:38,425 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:38,671 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:39,147 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186