/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:00:17,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:00:17,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:00:17,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:00:17,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:00:17,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:00:17,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:00:17,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:00:17,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:00:17,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:00:17,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:00:17,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:00:17,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:00:17,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:00:17,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:00:17,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:00:17,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:00:17,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:00:17,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:00:17,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:00:17,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:00:17,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:00:17,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:00:17,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:00:17,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:00:17,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:00:17,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:00:17,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:00:17,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:00:17,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:00:17,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:00:17,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:00:17,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:00:17,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:00:17,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:00:17,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:00:17,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:00:17,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:00:17,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:00:17,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:00:17,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:00:17,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 17:00:18,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:00:18,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:00:18,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:00:18,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:00:18,019 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:00:18,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:00:18,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:00:18,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:00:18,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:00:18,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:00:18,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:00:18,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:00:18,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:00:18,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:00:18,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:00:18,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:00:18,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:00:18,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:00:18,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:00:18,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:00:18,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:00:18,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:00:18,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:00:18,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:00:18,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:00:18,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:00:18,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:00:18,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:00:18,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:00:18,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:00:18,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:00:18,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:00:18,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:00:18,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:00:18,360 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:00:18,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-18 17:00:18,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed949018c/af606d7196ba4393afa5e798fdf8a4db/FLAG20c8f2e51 [2020-08-18 17:00:18,956 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:00:18,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-18 17:00:18,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed949018c/af606d7196ba4393afa5e798fdf8a4db/FLAG20c8f2e51 [2020-08-18 17:00:19,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed949018c/af606d7196ba4393afa5e798fdf8a4db [2020-08-18 17:00:19,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:00:19,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:00:19,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:00:19,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:00:19,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:00:19,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:19,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d2a1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19, skipping insertion in model container [2020-08-18 17:00:19,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:19,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:00:19,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:00:19,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:00:19,770 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:00:19,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:00:19,933 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:00:19,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19 WrapperNode [2020-08-18 17:00:19,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:00:19,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:00:19,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:00:19,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:00:19,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:19,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:19,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:19,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:20,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:20,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:20,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... [2020-08-18 17:00:20,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:00:20,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:00:20,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:00:20,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:00:20,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:00:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:00:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:00:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 17:00:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 17:00:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 17:00:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:00:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 17:00:20,100 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 17:00:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 17:00:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 17:00:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 17:00:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 17:00:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 17:00:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 17:00:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 17:00:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 17:00:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 17:00:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 17:00:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 17:00:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 17:00:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 17:00:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 17:00:20,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 17:00:20,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 17:00:20,108 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 17:00:20,108 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 17:00:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 17:00:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 17:00:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:00:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 17:00:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 17:00:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 17:00:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 17:00:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 17:00:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 17:00:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 17:00:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 17:00:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 17:00:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 17:00:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 17:00:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 17:00:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 17:00:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:00:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:00:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 17:00:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 17:00:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 17:00:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 17:00:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 17:00:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 17:00:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 17:00:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 17:00:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 17:00:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 17:00:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 17:00:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 17:00:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 17:00:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 17:00:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 17:00:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 17:00:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 17:00:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 17:00:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 17:00:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:00:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 17:00:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 17:00:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 17:00:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 17:00:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 17:00:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 17:00:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 17:00:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 17:00:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 17:00:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 17:00:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 17:00:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 17:00:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 17:00:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:00:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 17:00:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 17:00:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:00:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:00:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 17:00:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:00:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:00:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:00:20,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:00:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 17:00:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:00:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 17:00:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 17:00:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:00:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 17:00:20,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 17:00:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 17:00:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:00:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 17:00:20,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:00:21,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:00:21,274 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 17:00:21,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:00:21 BoogieIcfgContainer [2020-08-18 17:00:21,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:00:21,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:00:21,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:00:21,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:00:21,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:00:19" (1/3) ... [2020-08-18 17:00:21,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e54a0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:00:21, skipping insertion in model container [2020-08-18 17:00:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:00:19" (2/3) ... [2020-08-18 17:00:21,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e54a0a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:00:21, skipping insertion in model container [2020-08-18 17:00:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:00:21" (3/3) ... [2020-08-18 17:00:21,288 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-18 17:00:21,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:00:21,307 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:00:21,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:00:21,345 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:00:21,345 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:00:21,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:00:21,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:00:21,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:00:21,346 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:00:21,346 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:00:21,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:00:21,369 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-18 17:00:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 17:00:21,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:21,381 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] [2020-08-18 17:00:21,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:21,388 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-18 17:00:21,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:21,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545036490] [2020-08-18 17:00:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,103 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 17:00:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 17:00:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:22,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545036490] [2020-08-18 17:00:22,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:22,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:00:22,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243039511] [2020-08-18 17:00:22,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:00:22,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:22,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:00:22,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:00:22,249 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-18 17:00:23,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:23,286 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-18 17:00:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:00:23,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 17:00:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:23,305 INFO L225 Difference]: With dead ends: 303 [2020-08-18 17:00:23,306 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 17:00:23,311 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 [2020-08-18 17:00:23,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 17:00:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 17:00:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 17:00:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-18 17:00:23,416 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-18 17:00:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:23,416 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-18 17:00:23,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:00:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-18 17:00:23,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 17:00:23,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:23,424 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] [2020-08-18 17:00:23,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:00:23,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:23,425 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-18 17:00:23,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:23,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004032972] [2020-08-18 17:00:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,747 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:23,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 17:00:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 17:00:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 17:00:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:23,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004032972] [2020-08-18 17:00:23,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:23,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 17:00:23,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507202071] [2020-08-18 17:00:23,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 17:00:23,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:23,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 17:00:23,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:00:23,838 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-18 17:00:24,292 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:25,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:25,041 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-18 17:00:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 17:00:25,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 17:00:25,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:25,046 INFO L225 Difference]: With dead ends: 248 [2020-08-18 17:00:25,046 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 17:00:25,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:00:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 17:00:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-18 17:00:25,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 17:00:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-18 17:00:25,088 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-18 17:00:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:25,088 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-18 17:00:25,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 17:00:25,089 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-18 17:00:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 17:00:25,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:25,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:25,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:00:25,092 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:25,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-18 17:00:25,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:25,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624472276] [2020-08-18 17:00:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,447 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:00:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 17:00:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 17:00:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:25,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624472276] [2020-08-18 17:00:25,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:25,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:00:25,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648104031] [2020-08-18 17:00:25,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:00:25,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:25,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:00:25,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:00:25,602 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-18 17:00:25,970 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:26,303 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:26,559 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:26,784 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:27,959 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-18 17:00:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:00:27,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 17:00:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:27,965 INFO L225 Difference]: With dead ends: 257 [2020-08-18 17:00:27,965 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 17:00:27,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:00:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 17:00:28,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-18 17:00:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 17:00:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-18 17:00:28,002 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-18 17:00:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:28,002 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-18 17:00:28,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:00:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-18 17:00:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 17:00:28,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:28,004 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] [2020-08-18 17:00:28,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:00:28,005 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:28,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:28,005 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-18 17:00:28,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:28,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208383045] [2020-08-18 17:00:28,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,275 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:00:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:00:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 17:00:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 17:00:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:28,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208383045] [2020-08-18 17:00:28,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:28,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:00:28,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926099226] [2020-08-18 17:00:28,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:00:28,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:28,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:00:28,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:00:28,391 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-18 17:00:28,797 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:30,192 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:30,738 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-18 17:00:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:00:30,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 17:00:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:30,742 INFO L225 Difference]: With dead ends: 356 [2020-08-18 17:00:30,742 INFO L226 Difference]: Without dead ends: 255 [2020-08-18 17:00:30,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:00:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-18 17:00:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-18 17:00:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-18 17:00:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-18 17:00:30,794 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-18 17:00:30,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:30,795 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-18 17:00:30,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:00:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-18 17:00:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 17:00:30,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:30,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:30,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:00:30,797 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:30,798 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-18 17:00:30,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:30,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248753254] [2020-08-18 17:00:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,101 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:00:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:00:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 17:00:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 17:00:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 17:00:31,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248753254] [2020-08-18 17:00:31,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:31,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:00:31,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332714945] [2020-08-18 17:00:31,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:00:31,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:31,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:00:31,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:00:31,278 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-18 17:00:31,835 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:32,488 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:33,211 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:33,550 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:33,965 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:34,219 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:34,822 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-18 17:00:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 17:00:34,823 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-18 17:00:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:34,827 INFO L225 Difference]: With dead ends: 438 [2020-08-18 17:00:34,828 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 17:00:34,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:00:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 17:00:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-18 17:00:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 17:00:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-18 17:00:34,870 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-18 17:00:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:34,870 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-18 17:00:34,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:00:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-18 17:00:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 17:00:34,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:34,873 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] [2020-08-18 17:00:34,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:00:34,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:34,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:34,873 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-18 17:00:34,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:34,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240063637] [2020-08-18 17:00:34,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,137 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:00:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:00:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 17:00:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 17:00:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:35,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240063637] [2020-08-18 17:00:35,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:35,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 17:00:35,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51610890] [2020-08-18 17:00:35,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 17:00:35,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:35,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 17:00:35,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 17:00:35,274 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-18 17:00:36,349 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:36,611 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:36,868 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:37,118 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:37,828 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-18 17:00:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 17:00:37,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 17:00:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:37,831 INFO L225 Difference]: With dead ends: 436 [2020-08-18 17:00:37,832 INFO L226 Difference]: Without dead ends: 253 [2020-08-18 17:00:37,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 17:00:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-18 17:00:37,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-18 17:00:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-18 17:00:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-18 17:00:37,887 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-18 17:00:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:37,887 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-18 17:00:37,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 17:00:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-18 17:00:37,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 17:00:37,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:37,890 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] [2020-08-18 17:00:37,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:00:37,891 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-18 17:00:37,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:37,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220789946] [2020-08-18 17:00:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,192 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:38,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:00:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:00:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 17:00:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 17:00:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:38,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220789946] [2020-08-18 17:00:38,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:38,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 17:00:38,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070073597] [2020-08-18 17:00:38,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:00:38,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:00:38,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:00:38,348 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-18 17:00:39,085 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:39,317 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:39,544 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:40,243 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:40,508 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:40,764 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:41,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:41,593 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-18 17:00:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 17:00:41,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-18 17:00:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:41,597 INFO L225 Difference]: With dead ends: 448 [2020-08-18 17:00:41,597 INFO L226 Difference]: Without dead ends: 260 [2020-08-18 17:00:41,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:00:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-18 17:00:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-18 17:00:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 17:00:41,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-18 17:00:41,657 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-18 17:00:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:41,659 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-18 17:00:41,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:00:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-18 17:00:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 17:00:41,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:41,662 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] [2020-08-18 17:00:41,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 17:00:41,662 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:41,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-18 17:00:41,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:41,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285237826] [2020-08-18 17:00:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,956 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:41,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 17:00:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 17:00:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 17:00:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 17:00:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:42,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285237826] [2020-08-18 17:00:42,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:42,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 17:00:42,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634174801] [2020-08-18 17:00:42,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 17:00:42,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:42,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 17:00:42,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 17:00:42,125 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-18 17:00:42,557 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:43,088 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:44,687 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-18 17:00:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 17:00:44,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-18 17:00:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:44,691 INFO L225 Difference]: With dead ends: 617 [2020-08-18 17:00:44,691 INFO L226 Difference]: Without dead ends: 425 [2020-08-18 17:00:44,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:00:44,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-18 17:00:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-18 17:00:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-18 17:00:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-18 17:00:44,760 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-18 17:00:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:44,761 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-18 17:00:44,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 17:00:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-18 17:00:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 17:00:44,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:44,763 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] [2020-08-18 17:00:44,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 17:00:44,764 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:44,764 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-18 17:00:44,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:44,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230397692] [2020-08-18 17:00:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,090 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 17:00:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 17:00:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 17:00:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 17:00:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 17:00:45,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230397692] [2020-08-18 17:00:45,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:00:45,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 17:00:45,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920850031] [2020-08-18 17:00:45,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 17:00:45,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:45,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 17:00:45,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 17:00:45,285 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-18 17:00:45,801 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:46,451 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:47,401 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:47,700 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:47,935 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:48,208 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:48,487 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:49,563 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:49,820 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:00:50,381 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-18 17:00:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 17:00:50,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 17:00:50,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:00:50,398 INFO L225 Difference]: With dead ends: 1065 [2020-08-18 17:00:50,399 INFO L226 Difference]: Without dead ends: 776 [2020-08-18 17:00:50,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 17:00:50,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-18 17:00:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-18 17:00:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-18 17:00:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-18 17:00:50,573 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-18 17:00:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:00:50,577 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-18 17:00:50,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 17:00:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-18 17:00:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 17:00:50,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:00:50,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:00:50,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 17:00:50,584 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:00:50,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:00:50,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-18 17:00:50,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:00:50,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34711808] [2020-08-18 17:00:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:00:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,884 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:00:50,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:00:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:00:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:00:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:00:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:00:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:00:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:00:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:00:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:00:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:00:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 17:00:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:00:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 17:00:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 17:00:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:00:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:00:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:00:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 17:00:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 17:00:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:00:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 17:00:51,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34711808] [2020-08-18 17:00:51,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:00:51,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:00:51,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300719641] [2020-08-18 17:00:51,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:00:51,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:00:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:00:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:00:51,179 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-18 17:00:52,257 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:52,717 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:52,980 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:53,224 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 17:00:53,840 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:54,116 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:54,881 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:00:55,242 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:56,147 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:56,422 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:56,706 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:00:57,018 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:57,638 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:00:58,076 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:58,457 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:00:59,130 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:00:59,417 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:01:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:00,100 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-18 17:01:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 17:01:00,101 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-18 17:01:00,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:00,108 INFO L225 Difference]: With dead ends: 1445 [2020-08-18 17:01:00,109 INFO L226 Difference]: Without dead ends: 873 [2020-08-18 17:01:00,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 17:01:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-18 17:01:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-18 17:01:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 17:01:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-18 17:01:00,273 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-18 17:01:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:00,275 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-18 17:01:00,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:01:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-18 17:01:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-18 17:01:00,282 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:00,283 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, 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, 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] [2020-08-18 17:01:00,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 17:01:00,284 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:00,284 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-18 17:01:00,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:00,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369155664] [2020-08-18 17:01:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,648 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:01:00,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:01:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:01:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:01:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:01:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:01:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:01:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 17:01:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 17:01:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:01:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-18 17:01:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 17:01:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-18 17:01:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 17:01:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-18 17:01:01,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369155664] [2020-08-18 17:01:01,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:01:01,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 17:01:01,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52641050] [2020-08-18 17:01:01,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 17:01:01,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:01,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 17:01:01,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:01:01,129 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-18 17:01:02,792 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:01:03,091 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:03,332 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:03,582 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:04,910 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:05,639 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-18 17:01:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 17:01:05,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-18 17:01:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:05,647 INFO L225 Difference]: With dead ends: 2078 [2020-08-18 17:01:05,647 INFO L226 Difference]: Without dead ends: 1225 [2020-08-18 17:01:05,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 17:01:05,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-18 17:01:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-18 17:01:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-18 17:01:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-18 17:01:05,852 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-18 17:01:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:05,852 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-18 17:01:05,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 17:01:05,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-18 17:01:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-18 17:01:05,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:05,859 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, 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, 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] [2020-08-18 17:01:05,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 17:01:05,859 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:05,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:05,859 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-18 17:01:05,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:05,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121168710] [2020-08-18 17:01:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,171 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:01:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:01:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:01:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:01:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:01:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:01:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:01:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 17:01:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:01:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 17:01:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:01:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-18 17:01:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 17:01:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 17:01:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 17:01:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 17:01:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-18 17:01:06,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121168710] [2020-08-18 17:01:06,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:01:06,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 17:01:06,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544190744] [2020-08-18 17:01:06,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 17:01:06,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:06,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 17:01:06,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 17:01:06,630 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-18 17:01:07,402 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:07,737 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:07,987 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:08,231 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 17:01:08,867 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:09,594 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 17:01:09,942 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:10,212 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:10,815 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:11,569 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:11,809 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:12,270 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-18 17:01:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 17:01:12,271 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-18 17:01:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:12,277 INFO L225 Difference]: With dead ends: 1968 [2020-08-18 17:01:12,278 INFO L226 Difference]: Without dead ends: 1042 [2020-08-18 17:01:12,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 17:01:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-18 17:01:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-18 17:01:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-18 17:01:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-18 17:01:12,541 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-18 17:01:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:12,542 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-18 17:01:12,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 17:01:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-18 17:01:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-18 17:01:12,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:12,550 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, 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, 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] [2020-08-18 17:01:12,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 17:01:12,550 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:12,550 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-18 17:01:12,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:12,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140041984] [2020-08-18 17:01:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,844 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:01:12,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:01:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:01:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:01:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:01:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:01:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:01:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 17:01:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:12,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:01:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 17:01:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:01:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-18 17:01:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 17:01:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 17:01:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-18 17:01:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-18 17:01:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-18 17:01:13,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140041984] [2020-08-18 17:01:13,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:01:13,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 17:01:13,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189311176] [2020-08-18 17:01:13,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 17:01:13,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:13,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 17:01:13,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 17:01:13,152 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-18 17:01:14,696 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 17:01:14,970 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 17:01:15,211 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:01:15,447 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 17:01:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:01:15,856 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-18 17:01:15,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:01:15,856 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-18 17:01:15,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:01:15,865 INFO L225 Difference]: With dead ends: 1920 [2020-08-18 17:01:15,865 INFO L226 Difference]: Without dead ends: 1034 [2020-08-18 17:01:15,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 17:01:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-18 17:01:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-18 17:01:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-18 17:01:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-18 17:01:16,054 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-18 17:01:16,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:01:16,056 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-18 17:01:16,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 17:01:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-18 17:01:16,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-18 17:01:16,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:01:16,063 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, 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, 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] [2020-08-18 17:01:16,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 17:01:16,064 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:01:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:01:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-18 17:01:16,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:01:16,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800791619] [2020-08-18 17:01:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:01:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,400 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 17:01:16,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:01:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 17:01:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 17:01:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 17:01:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 17:01:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 17:01:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 17:01:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 17:01:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 17:01:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 17:01:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 17:01:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:01:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 17:01:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 17:01:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 17:01:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-18 17:01:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:01:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 17:01:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:01:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:01:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:01:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-18 17:01:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-18 17:01:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:01:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-08-18 17:01:16,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800791619] [2020-08-18 17:01:16,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:01:16,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 17:01:16,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418206622] [2020-08-18 17:01:16,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 17:01:16,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:01:16,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 17:01:16,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-08-18 17:01:16,861 INFO L87 Difference]: Start difference. First operand 1009 states and 1195 transitions. Second operand 15 states.