/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:23:40,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:23:40,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:23:40,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:23:40,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:23:40,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:23:40,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:23:40,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:23:40,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:23:40,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:23:40,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:23:40,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:23:40,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:23:40,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:23:40,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:23:40,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:23:40,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:23:40,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:23:40,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:23:40,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:23:40,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:23:40,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:23:40,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:23:40,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:23:40,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:23:40,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:23:40,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:23:40,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:23:40,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:23:40,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:23:40,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:23:40,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:23:40,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:23:40,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:23:40,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:23:40,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:23:40,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:23:40,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:23:40,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:23:40,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:23:40,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:23:40,919 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 [2020-08-19 03:23:40,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:23:40,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:23:40,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:23:40,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:23:40,976 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:23:40,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:23:40,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:23:40,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:23:40,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:23:40,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:23:40,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:23:40,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:23:40,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:23:40,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:23:40,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:23:40,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:23:40,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:23:40,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:23:40,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:23:40,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:23:40,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:23:40,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:23:40,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:23:40,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:23:40,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:23:40,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:23:40,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:23:40,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:23:40,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:23:40,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:23:41,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:23:41,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:23:41,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:23:41,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:23:41,288 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:23:41,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-19 03:23:41,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa1a50d99/4c95f0475f8e4be287964a27ea5ead4a/FLAG7a8fc2d1a [2020-08-19 03:23:41,915 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:23:41,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-19 03:23:41,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa1a50d99/4c95f0475f8e4be287964a27ea5ead4a/FLAG7a8fc2d1a [2020-08-19 03:23:42,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa1a50d99/4c95f0475f8e4be287964a27ea5ead4a [2020-08-19 03:23:42,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:23:42,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:23:42,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:23:42,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:23:42,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:23:42,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42, skipping insertion in model container [2020-08-19 03:23:42,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:23:42,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:23:42,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:23:42,739 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:23:42,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:23:42,855 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:23:42,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42 WrapperNode [2020-08-19 03:23:42,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:23:42,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:23:42,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:23:42,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:23:42,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (1/1) ... [2020-08-19 03:23:42,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:23:42,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:23:42,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:23:42,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:23:42,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (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 [2020-08-19 03:23:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:23:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:23:43,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:23:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:23:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:23:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:23:43,031 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:23:43,032 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:23:43,032 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:23:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:23:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:23:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:23:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:23:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:23:43,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:23:43,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:23:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:23:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:23:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:23:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:23:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:23:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:23:43,036 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:23:43,036 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:23:43,036 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:23:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:23:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:23:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:23:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:23:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:23:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:23:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:23:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:23:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:23:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:23:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:23:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:23:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:23:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:23:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:23:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:23:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:23:43,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:23:43,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:23:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:23:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:23:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:23:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:23:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:23:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 03:23:43,041 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 03:23:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:23:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:23:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:23:43,042 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:23:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:23:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:23:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:23:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:23:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:23:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:23:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:23:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:23:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:23:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:23:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:23:43,044 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:23:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:23:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:23:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:23:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:23:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:23:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:23:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:23:43,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:23:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:23:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:23:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:23:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:23:43,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:23:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:23:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:23:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:23:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:23:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:23:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:23:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:23:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:23:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:23:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:23:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:23:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:23:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:23:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:23:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:23:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:23:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:23:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:23:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:23:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:23:44,115 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:23:44,116 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:23:44,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:44 BoogieIcfgContainer [2020-08-19 03:23:44,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:23:44,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:23:44,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:23:44,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:23:44,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:23:42" (1/3) ... [2020-08-19 03:23:44,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a180a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:44, skipping insertion in model container [2020-08-19 03:23:44,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:23:42" (2/3) ... [2020-08-19 03:23:44,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a180a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:23:44, skipping insertion in model container [2020-08-19 03:23:44,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:23:44" (3/3) ... [2020-08-19 03:23:44,131 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-08-19 03:23:44,143 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:23:44,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:23:44,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:23:44,193 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:23:44,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:23:44,193 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:23:44,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:23:44,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:23:44,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:23:44,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:23:44,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:23:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-19 03:23:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:23:44,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:44,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:44,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:44,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:44,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times [2020-08-19 03:23:44,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:44,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877817760] [2020-08-19 03:23:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,905 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:45,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:23:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:23:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:45,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877817760] [2020-08-19 03:23:45,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:45,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:23:45,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331781957] [2020-08-19 03:23:45,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:23:45,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:45,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:23:45,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:23:45,065 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-08-19 03:23:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:46,361 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions. [2020-08-19 03:23:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:23:46,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 03:23:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:46,379 INFO L225 Difference]: With dead ends: 344 [2020-08-19 03:23:46,379 INFO L226 Difference]: Without dead ends: 190 [2020-08-19 03:23:46,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:23:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-19 03:23:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155. [2020-08-19 03:23:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 03:23:46,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-19 03:23:46,506 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51 [2020-08-19 03:23:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:46,507 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-19 03:23:46,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:23:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-19 03:23:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:23:46,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:46,511 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] [2020-08-19 03:23:46,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:23:46,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:46,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:46,512 INFO L82 PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times [2020-08-19 03:23:46,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:46,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659053694] [2020-08-19 03:23:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,882 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:46,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:23:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:46,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659053694] [2020-08-19 03:23:46,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:46,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:23:46,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511717485] [2020-08-19 03:23:46,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:23:46,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:46,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:23:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:23:46,948 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 5 states. [2020-08-19 03:23:47,419 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:48,494 INFO L93 Difference]: Finished difference Result 289 states and 359 transitions. [2020-08-19 03:23:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:23:48,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 03:23:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:48,498 INFO L225 Difference]: With dead ends: 289 [2020-08-19 03:23:48,498 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 03:23:48,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:23:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 03:23:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-19 03:23:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 03:23:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-19 03:23:48,543 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-19 03:23:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:48,544 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-19 03:23:48,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:23:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-19 03:23:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 03:23:48,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:48,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:48,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:23:48,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:48,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times [2020-08-19 03:23:48,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:48,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894012647] [2020-08-19 03:23:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,871 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:23:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:23:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:48,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894012647] [2020-08-19 03:23:48,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:48,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:23:48,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052166686] [2020-08-19 03:23:48,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:23:48,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:48,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:23:48,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:23:48,998 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 9 states. [2020-08-19 03:23:49,380 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:49,698 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:49,960 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:50,222 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:51,694 INFO L93 Difference]: Finished difference Result 298 states and 374 transitions. [2020-08-19 03:23:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:23:51,701 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 03:23:51,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:51,707 INFO L225 Difference]: With dead ends: 298 [2020-08-19 03:23:51,707 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 03:23:51,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:23:51,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 03:23:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-19 03:23:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 03:23:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2020-08-19 03:23:51,749 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56 [2020-08-19 03:23:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:51,749 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2020-08-19 03:23:51,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:23:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2020-08-19 03:23:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 03:23:51,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:51,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:51,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:23:51,753 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:51,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:51,754 INFO L82 PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times [2020-08-19 03:23:51,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:51,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719569077] [2020-08-19 03:23:51,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,015 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:23:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:23:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 03:23:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:52,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719569077] [2020-08-19 03:23:52,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:52,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:23:52,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231214837] [2020-08-19 03:23:52,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:23:52,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:52,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:23:52,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:23:52,110 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 7 states. [2020-08-19 03:23:52,472 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:53,670 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:23:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:54,608 INFO L93 Difference]: Finished difference Result 403 states and 508 transitions. [2020-08-19 03:23:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:23:54,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-19 03:23:54,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:54,617 INFO L225 Difference]: With dead ends: 403 [2020-08-19 03:23:54,617 INFO L226 Difference]: Without dead ends: 285 [2020-08-19 03:23:54,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:23:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-19 03:23:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239. [2020-08-19 03:23:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-19 03:23:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2020-08-19 03:23:54,679 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74 [2020-08-19 03:23:54,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:54,679 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2020-08-19 03:23:54,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:23:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2020-08-19 03:23:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:23:54,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:54,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:54,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:23:54,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:54,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times [2020-08-19 03:23:54,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:54,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292501265] [2020-08-19 03:23:54,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:54,969 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:54,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:23:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 03:23:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:23:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:55,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292501265] [2020-08-19 03:23:55,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:55,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:23:55,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159284745] [2020-08-19 03:23:55,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:23:55,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:55,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:23:55,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:23:55,166 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 9 states. [2020-08-19 03:23:55,560 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:56,549 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:56,911 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:23:57,500 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:57,731 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:23:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:23:59,128 INFO L93 Difference]: Finished difference Result 708 states and 878 transitions. [2020-08-19 03:23:59,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 03:23:59,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 03:23:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:23:59,136 INFO L225 Difference]: With dead ends: 708 [2020-08-19 03:23:59,137 INFO L226 Difference]: Without dead ends: 497 [2020-08-19 03:23:59,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:23:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-08-19 03:23:59,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 426. [2020-08-19 03:23:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-08-19 03:23:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions. [2020-08-19 03:23:59,228 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88 [2020-08-19 03:23:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:23:59,229 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 488 transitions. [2020-08-19 03:23:59,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:23:59,229 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions. [2020-08-19 03:23:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 03:23:59,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:23:59,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:23:59,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:23:59,231 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:23:59,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:23:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times [2020-08-19 03:23:59,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:23:59,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625140380] [2020-08-19 03:23:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:23:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,502 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:23:59,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:23:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:23:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:23:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:23:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:23:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:23:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:23:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:23:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:23:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:23:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:23:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:23:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 03:23:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:23:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:23:59,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625140380] [2020-08-19 03:23:59,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:23:59,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:23:59,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157090606] [2020-08-19 03:23:59,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:23:59,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:23:59,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:23:59,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:23:59,704 INFO L87 Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 10 states. [2020-08-19 03:24:00,157 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:01,330 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:02,462 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:02,709 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:02,954 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:03,375 INFO L93 Difference]: Finished difference Result 930 states and 1135 transitions. [2020-08-19 03:24:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 03:24:03,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-19 03:24:03,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:03,381 INFO L225 Difference]: With dead ends: 930 [2020-08-19 03:24:03,381 INFO L226 Difference]: Without dead ends: 532 [2020-08-19 03:24:03,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:24:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-19 03:24:03,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 425. [2020-08-19 03:24:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-19 03:24:03,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions. [2020-08-19 03:24:03,463 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92 [2020-08-19 03:24:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:03,463 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 485 transitions. [2020-08-19 03:24:03,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:24:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions. [2020-08-19 03:24:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 03:24:03,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:03,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:03,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:24:03,466 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times [2020-08-19 03:24:03,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:03,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108788959] [2020-08-19 03:24:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,751 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:24:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:24:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:24:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 03:24:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:24:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:24:03,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108788959] [2020-08-19 03:24:03,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:03,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 03:24:03,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162124568] [2020-08-19 03:24:03,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:24:03,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:03,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:24:03,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:24:03,944 INFO L87 Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 10 states. [2020-08-19 03:24:05,142 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:05,367 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:05,608 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:05,849 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:07,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:07,107 INFO L93 Difference]: Finished difference Result 937 states and 1168 transitions. [2020-08-19 03:24:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:24:07,109 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-08-19 03:24:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:07,112 INFO L225 Difference]: With dead ends: 937 [2020-08-19 03:24:07,113 INFO L226 Difference]: Without dead ends: 540 [2020-08-19 03:24:07,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:24:07,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-08-19 03:24:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 435. [2020-08-19 03:24:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 03:24:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions. [2020-08-19 03:24:07,198 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108 [2020-08-19 03:24:07,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:07,199 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 495 transitions. [2020-08-19 03:24:07,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:24:07,199 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions. [2020-08-19 03:24:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 03:24:07,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:07,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:07,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:24:07,202 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times [2020-08-19 03:24:07,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:07,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755352724] [2020-08-19 03:24:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,487 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:24:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:24:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:24:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 03:24:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:24:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:24:07,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755352724] [2020-08-19 03:24:07,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:07,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:24:07,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375534439] [2020-08-19 03:24:07,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:24:07,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:07,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:24:07,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:24:07,701 INFO L87 Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 12 states. [2020-08-19 03:24:08,338 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:08,567 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:08,812 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:09,424 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:09,667 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:09,914 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:24:11,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:11,324 INFO L93 Difference]: Finished difference Result 957 states and 1190 transitions. [2020-08-19 03:24:11,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:24:11,325 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-19 03:24:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:11,329 INFO L225 Difference]: With dead ends: 957 [2020-08-19 03:24:11,329 INFO L226 Difference]: Without dead ends: 550 [2020-08-19 03:24:11,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:24:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-08-19 03:24:11,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 443. [2020-08-19 03:24:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-19 03:24:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2020-08-19 03:24:11,418 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108 [2020-08-19 03:24:11,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:11,420 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2020-08-19 03:24:11,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:24:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2020-08-19 03:24:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 03:24:11,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:11,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:11,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:24:11,424 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:11,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:11,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times [2020-08-19 03:24:11,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:11,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920493568] [2020-08-19 03:24:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,694 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:24:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:24:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:24:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 03:24:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:24:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:24:11,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920493568] [2020-08-19 03:24:11,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:11,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:24:11,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914756631] [2020-08-19 03:24:11,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:24:11,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:11,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:24:11,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:24:11,908 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 8 states. [2020-08-19 03:24:12,605 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:13,369 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:15,894 INFO L93 Difference]: Finished difference Result 1296 states and 1667 transitions. [2020-08-19 03:24:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:24:15,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-08-19 03:24:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:15,901 INFO L225 Difference]: With dead ends: 1296 [2020-08-19 03:24:15,901 INFO L226 Difference]: Without dead ends: 881 [2020-08-19 03:24:15,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 03:24:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-08-19 03:24:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 749. [2020-08-19 03:24:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-19 03:24:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 881 transitions. [2020-08-19 03:24:16,045 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 881 transitions. Word has length 108 [2020-08-19 03:24:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:16,046 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 881 transitions. [2020-08-19 03:24:16,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:24:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 881 transitions. [2020-08-19 03:24:16,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 03:24:16,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:16,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:16,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:24:16,049 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:16,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times [2020-08-19 03:24:16,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:16,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233162962] [2020-08-19 03:24:16,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,343 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:24:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:24:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:24:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:24:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 03:24:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 03:24:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:24:16,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233162962] [2020-08-19 03:24:16,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:24:16,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 03:24:16,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056318449] [2020-08-19 03:24:16,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 03:24:16,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:16,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 03:24:16,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:24:16,744 INFO L87 Difference]: Start difference. First operand 749 states and 881 transitions. Second operand 18 states. [2020-08-19 03:24:17,683 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:18,049 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:18,351 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:18,598 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:19,274 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:20,288 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:20,627 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:20,908 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:21,195 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:21,531 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:21,817 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:22,366 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 03:24:22,950 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 03:24:25,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:25,708 INFO L93 Difference]: Finished difference Result 1572 states and 1938 transitions. [2020-08-19 03:24:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-19 03:24:25,709 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-08-19 03:24:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:25,714 INFO L225 Difference]: With dead ends: 1572 [2020-08-19 03:24:25,715 INFO L226 Difference]: Without dead ends: 851 [2020-08-19 03:24:25,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 03:24:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-08-19 03:24:25,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 728. [2020-08-19 03:24:25,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-19 03:24:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 846 transitions. [2020-08-19 03:24:25,855 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 846 transitions. Word has length 112 [2020-08-19 03:24:25,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:25,855 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 846 transitions. [2020-08-19 03:24:25,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 03:24:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 846 transitions. [2020-08-19 03:24:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-19 03:24:25,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:25,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:25,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:24:25,860 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2045020006, now seen corresponding path program 1 times [2020-08-19 03:24:25,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:25,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783603747] [2020-08-19 03:24:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,138 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:26,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:24:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:24:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:24:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:24:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:24:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 03:24:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 03:24:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 03:24:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:24:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:24:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:24:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 03:24:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-19 03:24:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 03:24:26,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783603747] [2020-08-19 03:24:26,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:24:26,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 03:24:26,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36788382] [2020-08-19 03:24:26,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 03:24:26,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:26,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 03:24:26,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:24:26,543 INFO L87 Difference]: Start difference. First operand 728 states and 846 transitions. Second operand 19 states. [2020-08-19 03:24:27,499 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:27,824 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:28,091 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:28,367 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:24:29,004 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:24:30,040 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:30,383 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:30,656 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:30,948 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:31,268 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:31,535 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:32,767 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:33,011 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:33,278 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:33,547 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:24:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:34,654 INFO L93 Difference]: Finished difference Result 1341 states and 1663 transitions. [2020-08-19 03:24:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 03:24:34,655 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2020-08-19 03:24:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:34,656 INFO L225 Difference]: With dead ends: 1341 [2020-08-19 03:24:34,656 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:24:34,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 03:24:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:24:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:24:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:24:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:24:34,662 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-08-19 03:24:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:34,663 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:24:34,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 03:24:34,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:24:34,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:24:34,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:24:34,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:24:36,907 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 310 DAG size of output: 247 [2020-08-19 03:24:37,260 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-19 03:24:37,666 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-19 03:24:37,813 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-19 03:24:38,007 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 203 [2020-08-19 03:24:39,246 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 265 [2020-08-19 03:24:39,884 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 254 [2020-08-19 03:24:40,678 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 212 [2020-08-19 03:24:40,955 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 33