/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:22:38,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:22:38,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:22:38,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:22:38,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:22:38,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:22:38,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:22:38,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:22:38,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:22:38,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:22:38,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:22:38,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:22:38,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:22:38,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:22:38,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:22:38,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:22:38,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:22:38,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:22:38,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:22:38,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:22:38,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:22:38,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:22:38,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:22:38,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:22:38,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:22:38,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:22:38,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:22:38,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:22:38,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:22:38,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:22:38,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:22:38,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:22:38,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:22:38,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:22:38,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:22:38,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:22:38,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:22:38,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:22:38,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:22:38,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:22:38,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:22:38,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:22:38,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:22:38,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:22:38,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:22:38,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:22:38,904 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:22:38,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:22:38,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:22:38,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:22:38,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:22:38,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:22:38,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:22:38,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:22:38,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:22:38,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:22:38,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:22:38,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:22:38,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:22:38,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:22:38,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:22:38,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:22:38,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:22:38,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:22:38,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:22:38,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:22:38,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:22:38,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:22:38,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:22:38,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:22:38,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:22:38,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:22:39,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:22:39,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:22:39,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:22:39,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:22:39,260 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:22:39,261 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 05:22:39,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a2b07e58/7c4c8bccea9d4032a9f5c17d03e09902/FLAG41d44a99f [2020-08-22 05:22:39,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:22:39,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 05:22:39,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a2b07e58/7c4c8bccea9d4032a9f5c17d03e09902/FLAG41d44a99f [2020-08-22 05:22:40,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a2b07e58/7c4c8bccea9d4032a9f5c17d03e09902 [2020-08-22 05:22:40,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:22:40,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:22:40,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:22:40,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:22:40,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:22:40,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e175ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40, skipping insertion in model container [2020-08-22 05:22:40,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:22:40,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:22:40,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:22:40,636 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:22:40,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:22:40,806 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:22:40,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40 WrapperNode [2020-08-22 05:22:40,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:22:40,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:22:40,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:22:40,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:22:40,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... [2020-08-22 05:22:40,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:22:40,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:22:40,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:22:40,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:22:40,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:22:40,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:22:40,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:22:40,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:22:40,972 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:22:40,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:22:40,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:22:40,972 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:22:40,973 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:22:40,973 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:22:40,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:22:40,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:22:40,974 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:22:40,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:22:40,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:22:40,975 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:22:40,975 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:22:40,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:22:40,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:22:40,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:22:40,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:22:40,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:22:40,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:22:40,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 05:22:40,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 05:22:40,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 05:22:40,980 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:22:40,980 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:22:40,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:22:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:22:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:22:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:22:40,981 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:22:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:22:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:22:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:22:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:22:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:22:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:22:40,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:22:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:22:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:22:40,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:22:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:22:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:22:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:22:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:22:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:22:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:22:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:22:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:22:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:22:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:22:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:22:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:22:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:22:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:22:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 05:22:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 05:22:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:22:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:22:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:22:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:22:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:22:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:22:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:22:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:22:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:22:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:22:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:22:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:22:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:22:40,988 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:22:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:22:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:22:40,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:22:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:22:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:22:40,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:22:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:22:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:22:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:22:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:22:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:22:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:22:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:22:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:22:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:22:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:22:40,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:22:42,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:22:42,135 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:22:42,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:22:42 BoogieIcfgContainer [2020-08-22 05:22:42,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:22:42,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:22:42,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:22:42,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:22:42,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:22:40" (1/3) ... [2020-08-22 05:22:42,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5bdf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:22:42, skipping insertion in model container [2020-08-22 05:22:42,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:22:40" (2/3) ... [2020-08-22 05:22:42,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5bdf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:22:42, skipping insertion in model container [2020-08-22 05:22:42,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:22:42" (3/3) ... [2020-08-22 05:22:42,156 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-22 05:22:42,167 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:22:42,176 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:22:42,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:22:42,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:22:42,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:22:42,213 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:22:42,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:22:42,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:22:42,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:22:42,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:22:42,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:22:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-22 05:22:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 05:22:42,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:42,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:22:42,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:42,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-22 05:22:42,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:42,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279818567] [2020-08-22 05:22:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,037 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:43,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:22:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:22:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:22:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:22:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:22:43,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279818567] [2020-08-22 05:22:43,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:22:43,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:22:43,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000189404] [2020-08-22 05:22:43,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:22:43,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:43,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:22:43,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:22:43,183 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-22 05:22:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:44,378 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-22 05:22:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:22:44,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 05:22:44,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:44,395 INFO L225 Difference]: With dead ends: 324 [2020-08-22 05:22:44,395 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 05:22:44,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:22:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 05:22:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-22 05:22:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 05:22:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-22 05:22:44,503 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-22 05:22:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:44,504 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-22 05:22:44,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:22:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-22 05:22:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 05:22:44,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:44,509 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] [2020-08-22 05:22:44,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:22:44,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-22 05:22:44,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:44,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745044190] [2020-08-22 05:22:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,860 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:22:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:22:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:22:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:22:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:22:44,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745044190] [2020-08-22 05:22:44,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:22:44,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:22:44,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094946926] [2020-08-22 05:22:44,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:22:44,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:44,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:22:44,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:22:44,923 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-22 05:22:45,458 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:22:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:46,357 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-22 05:22:46,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:22:46,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 05:22:46,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:46,362 INFO L225 Difference]: With dead ends: 259 [2020-08-22 05:22:46,362 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 05:22:46,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:22:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 05:22:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-22 05:22:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-22 05:22:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-22 05:22:46,425 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-22 05:22:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:46,426 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-22 05:22:46,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:22:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-22 05:22:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 05:22:46,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:46,436 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] [2020-08-22 05:22:46,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:22:46,436 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:46,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-22 05:22:46,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:46,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657706662] [2020-08-22 05:22:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,843 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:22:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:22:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 05:22:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:46,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 05:22:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:22:47,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657706662] [2020-08-22 05:22:47,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:22:47,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:22:47,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937812970] [2020-08-22 05:22:47,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:22:47,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:47,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:22:47,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:22:47,002 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-22 05:22:47,373 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:22:47,701 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:22:47,979 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:22:48,225 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:22:49,160 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:22:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:50,902 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-22 05:22:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:22:50,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 05:22:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:50,913 INFO L225 Difference]: With dead ends: 460 [2020-08-22 05:22:50,913 INFO L226 Difference]: Without dead ends: 351 [2020-08-22 05:22:50,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 05:22:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-22 05:22:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-22 05:22:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-22 05:22:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-22 05:22:51,039 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-22 05:22:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:51,040 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-22 05:22:51,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:22:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-22 05:22:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 05:22:51,041 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:51,042 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:22:51,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:22:51,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:51,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-22 05:22:51,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:51,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399711060] [2020-08-22 05:22:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,335 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:51,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:22:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:22:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:22:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 05:22:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 05:22:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:22:51,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399711060] [2020-08-22 05:22:51,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:22:51,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:22:51,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128327566] [2020-08-22 05:22:51,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:22:51,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:51,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:22:51,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:22:51,465 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-22 05:22:51,806 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:22:52,525 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:22:53,336 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:22:53,670 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:22:53,930 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:22:54,208 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:22:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:54,975 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-22 05:22:54,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:22:54,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 05:22:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:54,982 INFO L225 Difference]: With dead ends: 747 [2020-08-22 05:22:54,982 INFO L226 Difference]: Without dead ends: 485 [2020-08-22 05:22:54,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:22:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-22 05:22:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-22 05:22:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-22 05:22:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-22 05:22:55,078 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-22 05:22:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:55,079 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-22 05:22:55,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:22:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-22 05:22:55,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:22:55,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:55,081 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] [2020-08-22 05:22:55,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:22:55,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-22 05:22:55,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:55,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572713927] [2020-08-22 05:22:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,380 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:55,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:22:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:22:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:22:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:22:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 05:22:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 05:22:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:22:55,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572713927] [2020-08-22 05:22:55,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:22:55,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:22:55,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806603430] [2020-08-22 05:22:55,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:22:55,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:55,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:22:55,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:22:55,589 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-22 05:22:56,042 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:22:57,087 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:22:57,347 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:22:57,605 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:22:57,866 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:22:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:22:59,117 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-22 05:22:59,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 05:22:59,119 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 05:22:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:22:59,126 INFO L225 Difference]: With dead ends: 1260 [2020-08-22 05:22:59,126 INFO L226 Difference]: Without dead ends: 871 [2020-08-22 05:22:59,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:22:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-22 05:22:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-22 05:22:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 05:22:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-22 05:22:59,271 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-22 05:22:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:22:59,271 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-22 05:22:59,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:22:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-22 05:22:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:22:59,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:22:59,275 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] [2020-08-22 05:22:59,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:22:59,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:22:59,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:22:59,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-22 05:22:59,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:22:59,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318284526] [2020-08-22 05:22:59,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:22:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,521 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:22:59,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:22:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:22:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:22:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:22:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:22:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:22:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:22:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:22:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:22:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:22:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:22:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 05:22:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 05:22:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:22:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:22:59,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318284526] [2020-08-22 05:22:59,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:22:59,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:22:59,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526681574] [2020-08-22 05:22:59,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:22:59,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:22:59,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:22:59,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:22:59,714 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-22 05:23:00,778 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:23:01,012 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 05:23:01,291 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:01,522 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:23:02,323 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-22 05:23:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:23:02,324 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 05:23:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:23:02,332 INFO L225 Difference]: With dead ends: 1585 [2020-08-22 05:23:02,332 INFO L226 Difference]: Without dead ends: 870 [2020-08-22 05:23:02,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:23:02,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-22 05:23:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-22 05:23:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-22 05:23:02,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-22 05:23:02,498 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-22 05:23:02,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:23:02,499 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-22 05:23:02,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:23:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-22 05:23:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:23:02,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:23:02,504 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] [2020-08-22 05:23:02,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:23:02,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:23:02,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:23:02,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-22 05:23:02,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:23:02,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521113860] [2020-08-22 05:23:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:23:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,805 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:23:02,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:23:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:23:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:23:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:23:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:23:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 05:23:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:23:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 05:23:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 05:23:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:23:02,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521113860] [2020-08-22 05:23:02,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:23:02,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:23:02,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783635714] [2020-08-22 05:23:02,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:23:02,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:23:02,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:23:02,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:23:02,988 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-22 05:23:03,648 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:23:03,881 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:04,102 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:04,960 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:05,229 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:05,487 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:23:06,511 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-22 05:23:06,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:23:06,512 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 05:23:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:23:06,517 INFO L225 Difference]: With dead ends: 1442 [2020-08-22 05:23:06,517 INFO L226 Difference]: Without dead ends: 707 [2020-08-22 05:23:06,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:23:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-22 05:23:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-22 05:23:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-22 05:23:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-22 05:23:06,632 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-22 05:23:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:23:06,633 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-22 05:23:06,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:23:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-22 05:23:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 05:23:06,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:23:06,637 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] [2020-08-22 05:23:06,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:23:06,638 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:23:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:23:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-22 05:23:06,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:23:06,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864507803] [2020-08-22 05:23:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:23:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:06,997 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:23:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:23:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:23:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:23:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:23:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:23:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:23:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 05:23:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:23:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 05:23:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 05:23:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:23:07,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864507803] [2020-08-22 05:23:07,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:23:07,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:23:07,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483502964] [2020-08-22 05:23:07,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:23:07,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:23:07,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:23:07,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:23:07,172 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-22 05:23:07,522 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:23:08,247 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:23:09,011 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:23:09,350 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:23:09,623 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:23:09,925 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:23:10,198 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:23:12,086 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:23:12,395 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:23:12,840 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-22 05:23:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 05:23:12,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-22 05:23:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:23:12,852 INFO L225 Difference]: With dead ends: 1853 [2020-08-22 05:23:12,853 INFO L226 Difference]: Without dead ends: 1437 [2020-08-22 05:23:12,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 05:23:12,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-22 05:23:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-22 05:23:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-22 05:23:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-22 05:23:13,124 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-22 05:23:13,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:23:13,125 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-22 05:23:13,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:23:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-22 05:23:13,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 05:23:13,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:23:13,132 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 05:23:13,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:23:13,132 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:23:13,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:23:13,133 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-22 05:23:13,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:23:13,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123273605] [2020-08-22 05:23:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:23:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,452 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:23:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:23:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:23:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:23:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:23:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:23:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:23:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:23:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:23:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:23:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 05:23:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 05:23:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:23:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:23:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 05:23:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 05:23:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:23:13,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123273605] [2020-08-22 05:23:13,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:23:13,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 05:23:13,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551246696] [2020-08-22 05:23:13,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 05:23:13,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:23:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 05:23:13,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 05:23:13,794 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-22 05:23:14,419 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 05:23:14,895 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 05:23:15,169 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:23:15,420 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:23:16,134 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 05:23:16,519 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 05:23:16,880 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 05:23:17,274 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 05:23:17,617 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 05:23:18,766 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:23:19,696 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 05:23:20,220 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 05:23:20,557 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:23:21,130 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:21,541 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 05:23:22,136 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 05:23:22,726 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-22 05:23:23,250 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 05:23:23,775 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 05:23:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:23:24,638 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-22 05:23:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-22 05:23:24,638 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-22 05:23:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:23:24,649 INFO L225 Difference]: With dead ends: 2875 [2020-08-22 05:23:24,649 INFO L226 Difference]: Without dead ends: 1784 [2020-08-22 05:23:24,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 05:23:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-22 05:23:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-22 05:23:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-22 05:23:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-22 05:23:24,962 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-22 05:23:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:23:24,963 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-22 05:23:24,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 05:23:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-22 05:23:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 05:23:24,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:23:24,974 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 05:23:24,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:23:24,975 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:23:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:23:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-22 05:23:24,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:23:24,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704408743] [2020-08-22 05:23:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:23:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,321 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:23:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:23:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:23:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:23:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:23:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:23:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:23:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:23:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:23:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:23:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:23:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:23:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:23:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:23:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 05:23:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:23:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:23:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:23:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-22 05:23:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 05:23:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:23:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 05:23:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 05:23:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-22 05:23:25,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704408743] [2020-08-22 05:23:25,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:23:25,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 05:23:25,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422796124] [2020-08-22 05:23:25,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 05:23:25,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:23:25,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 05:23:25,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:23:25,814 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-22 05:23:27,198 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:23:27,460 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:23:27,688 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:23:27,943 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:23:28,181 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:23:29,159 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:23:29,681 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 05:23:30,158 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 05:23:30,533 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:23:33,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:23:33,099 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-22 05:23:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 05:23:33,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-22 05:23:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:23:33,115 INFO L225 Difference]: With dead ends: 4467 [2020-08-22 05:23:33,115 INFO L226 Difference]: Without dead ends: 2691 [2020-08-22 05:23:33,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 05:23:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-22 05:23:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-22 05:23:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-22 05:23:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-22 05:23:33,582 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-22 05:23:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:23:33,583 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-22 05:23:33,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 05:23:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-22 05:23:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-22 05:23:33,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:23:33,593 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 05:23:33,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:23:33,594 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:23:33,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:23:33,594 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-22 05:23:33,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:23:33,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894631854] [2020-08-22 05:23:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:23:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,920 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:23:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:23:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:23:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:23:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 05:23:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:23:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:33,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:23:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 05:23:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:23:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:23:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:23:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:23:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:23:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:23:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:23:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 05:23:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:23:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:23:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 05:23:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:23:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-22 05:23:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:23:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 05:23:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:23:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:23:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:23:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 05:23:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-22 05:23:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:23:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-22 05:23:34,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894631854] [2020-08-22 05:23:34,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:23:34,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 05:23:34,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224974886] [2020-08-22 05:23:34,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 05:23:34,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:23:34,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 05:23:34,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 05:23:34,260 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-22 05:23:34,869 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:23:35,422 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 05:23:35,681 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:23:35,949 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 05:23:36,643 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191