/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 [2020-08-19 01:04:09,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:04:09,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:04:10,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:04:10,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:04:10,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:04:10,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:04:10,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:04:10,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:04:10,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:04:10,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:04:10,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:04:10,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:04:10,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:04:10,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:04:10,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:04:10,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:04:10,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:04:10,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:04:10,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:04:10,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:04:10,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:04:10,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:04:10,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:04:10,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:04:10,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:04:10,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:04:10,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:04:10,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:04:10,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:04:10,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:04:10,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:04:10,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:04:10,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:04:10,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:04:10,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:04:10,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:04:10,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:04:10,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:04:10,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:04:10,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:04:10,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:04:10,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:04:10,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:04:10,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:04:10,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:04:10,117 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:04:10,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:04:10,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:04:10,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:04:10,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:04:10,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:04:10,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:04:10,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:04:10,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:04:10,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:04:10,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:04:10,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:04:10,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:04:10,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:04:10,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:04:10,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:04:10,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:04:10,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:04:10,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:04:10,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:04:10,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:04:10,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:04:10,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:04:10,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:04:10,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:04:10,123 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:04:10,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:04:10,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:04:10,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:04:10,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:04:10,453 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:04:10,454 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-19 01:04:10,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01e9571e5/12c0a747692b42859be6b458e2807645/FLAGa12b417c0 [2020-08-19 01:04:11,064 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:04:11,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-19 01:04:11,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01e9571e5/12c0a747692b42859be6b458e2807645/FLAGa12b417c0 [2020-08-19 01:04:11,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01e9571e5/12c0a747692b42859be6b458e2807645 [2020-08-19 01:04:11,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:04:11,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:04:11,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:04:11,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:04:11,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:04:11,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:04:11" (1/1) ... [2020-08-19 01:04:11,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:11, skipping insertion in model container [2020-08-19 01:04:11,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:04:11" (1/1) ... [2020-08-19 01:04:11,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:04:11,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:04:11,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:04:11,794 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:04:12,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:04:12,047 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:04:12,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12 WrapperNode [2020-08-19 01:04:12,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:04:12,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:04:12,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:04:12,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:04:12,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... [2020-08-19 01:04:12,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... [2020-08-19 01:04:12,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... [2020-08-19 01:04:12,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... [2020-08-19 01:04:12,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... [2020-08-19 01:04:12,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... [2020-08-19 01:04:12,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... [2020-08-19 01:04:12,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:04:12,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:04:12,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:04:12,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:04:12,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:04:12,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:04:12,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:04:12,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:04:12,244 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:04:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:04:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:04:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:04:12,245 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:04:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:04:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:04:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:04:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:04:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:04:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:04:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:04:12,248 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:04:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:04:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:04:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:04:12,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:04:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:04:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:04:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:04:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:04:12,250 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:04:12,251 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:04:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:04:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:04:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:04:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:04:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:04:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:04:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:04:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:04:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:04:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:04:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:04:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:04:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:04:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:04:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:04:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:04:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:04:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:04:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:04:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:04:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:04:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:04:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:04:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:04:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:04:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:04:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:04:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:04:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:04:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:04:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:04:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:04:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:04:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:04:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:04:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:04:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:04:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:04:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:04:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:04:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:04:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:04:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:04:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:04:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:04:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:04:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:04:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:04:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:04:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:04:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:04:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:04:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:04:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:04:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:04:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:04:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:04:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:04:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:04:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:04:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:04:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:04:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:04:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:04:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:04:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:04:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:04:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:04:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:04:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:04:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:04:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:04:13,435 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:04:13,435 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:04:13,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:04:13 BoogieIcfgContainer [2020-08-19 01:04:13,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:04:13,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:04:13,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:04:13,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:04:13,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:04:11" (1/3) ... [2020-08-19 01:04:13,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caf254b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:04:13, skipping insertion in model container [2020-08-19 01:04:13,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:12" (2/3) ... [2020-08-19 01:04:13,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caf254b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:04:13, skipping insertion in model container [2020-08-19 01:04:13,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:04:13" (3/3) ... [2020-08-19 01:04:13,450 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-19 01:04:13,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:04:13,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:04:13,487 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:04:13,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:04:13,515 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:04:13,515 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:04:13,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:04:13,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:04:13,516 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:04:13,516 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:04:13,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:04:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-19 01:04:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:04:13,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:13,553 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] [2020-08-19 01:04:13,554 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:13,561 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-19 01:04:13,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:13,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375710715] [2020-08-19 01:04:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,414 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:04:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:04:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:14,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375710715] [2020-08-19 01:04:14,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:14,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:04:14,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883385414] [2020-08-19 01:04:14,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:04:14,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:14,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:04:14,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:04:14,572 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-19 01:04:15,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:15,639 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-19 01:04:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:04:15,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:04:15,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:15,656 INFO L225 Difference]: With dead ends: 303 [2020-08-19 01:04:15,656 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 01:04:15,661 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 [2020-08-19 01:04:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 01:04:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-19 01:04:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 01:04:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-19 01:04:15,759 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-19 01:04:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:15,759 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-19 01:04:15,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:04:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-19 01:04:15,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:04:15,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:15,768 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] [2020-08-19 01:04:15,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:04:15,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:15,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:15,769 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-19 01:04:15,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:15,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359777847] [2020-08-19 01:04:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,148 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:04:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:04:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:04:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:16,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359777847] [2020-08-19 01:04:16,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:16,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:04:16,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105938890] [2020-08-19 01:04:16,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:04:16,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:16,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:04:16,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:04:16,261 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-19 01:04:16,715 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:17,533 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-19 01:04:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:04:17,534 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 01:04:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:17,539 INFO L225 Difference]: With dead ends: 248 [2020-08-19 01:04:17,539 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 01:04:17,541 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 [2020-08-19 01:04:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 01:04:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-19 01:04:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 01:04:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-19 01:04:17,582 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-19 01:04:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:17,582 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-19 01:04:17,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:04:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-19 01:04:17,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 01:04:17,585 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:17,585 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] [2020-08-19 01:04:17,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:04:17,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-19 01:04:17,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:17,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896540748] [2020-08-19 01:04:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:17,972 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:17,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:04:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:04:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 01:04:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:18,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896540748] [2020-08-19 01:04:18,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:18,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:18,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158506388] [2020-08-19 01:04:18,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:18,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:18,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:18,091 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-19 01:04:18,473 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:18,783 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:19,031 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:19,298 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:20,450 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-19 01:04:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:04:20,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 01:04:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:20,453 INFO L225 Difference]: With dead ends: 257 [2020-08-19 01:04:20,453 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 01:04:20,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:04:20,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 01:04:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-19 01:04:20,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 01:04:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-19 01:04:20,507 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-19 01:04:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:20,508 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-19 01:04:20,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-19 01:04:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 01:04:20,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:20,531 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] [2020-08-19 01:04:20,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:04:20,531 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:20,532 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-19 01:04:20,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:20,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488765072] [2020-08-19 01:04:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,814 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:04:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:04:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 01:04:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 01:04:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:20,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488765072] [2020-08-19 01:04:20,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:20,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:04:20,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042811060] [2020-08-19 01:04:20,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:04:20,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:20,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:04:20,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:04:20,930 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-19 01:04:21,430 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:22,763 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:23,325 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-19 01:04:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:04:23,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-19 01:04:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:23,330 INFO L225 Difference]: With dead ends: 356 [2020-08-19 01:04:23,330 INFO L226 Difference]: Without dead ends: 255 [2020-08-19 01:04:23,332 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 [2020-08-19 01:04:23,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-19 01:04:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-19 01:04:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-19 01:04:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-19 01:04:23,379 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-19 01:04:23,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:23,379 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-19 01:04:23,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:04:23,380 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-19 01:04:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-19 01:04:23,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:23,382 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] [2020-08-19 01:04:23,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:04:23,382 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:23,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:23,383 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-19 01:04:23,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:23,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351748618] [2020-08-19 01:04:23,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,726 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:04:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:04:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 01:04:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:04:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:04:23,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351748618] [2020-08-19 01:04:23,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:23,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:23,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087014942] [2020-08-19 01:04:23,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:23,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:23,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:23,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:23,891 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-19 01:04:24,473 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:25,170 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:25,899 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:26,218 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:26,657 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:26,907 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:27,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:27,495 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-19 01:04:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:04:27,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-19 01:04:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:27,499 INFO L225 Difference]: With dead ends: 438 [2020-08-19 01:04:27,499 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 01:04:27,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:04:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 01:04:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-19 01:04:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 01:04:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-19 01:04:27,549 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-19 01:04:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:27,549 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-19 01:04:27,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:27,550 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-19 01:04:27,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:04:27,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:27,552 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] [2020-08-19 01:04:27,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:04:27,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-19 01:04:27,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:27,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328960896] [2020-08-19 01:04:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,817 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:04:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:04:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:04:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:27,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328960896] [2020-08-19 01:04:27,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:27,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:27,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927975832] [2020-08-19 01:04:27,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:27,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:27,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:27,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:27,943 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-19 01:04:29,082 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:29,403 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:29,658 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:29,909 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:30,609 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-19 01:04:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:04:30,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 01:04:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:30,618 INFO L225 Difference]: With dead ends: 436 [2020-08-19 01:04:30,618 INFO L226 Difference]: Without dead ends: 253 [2020-08-19 01:04:30,620 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 [2020-08-19 01:04:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-19 01:04:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-19 01:04:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-19 01:04:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-19 01:04:30,677 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-19 01:04:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:30,677 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-19 01:04:30,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-19 01:04:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:04:30,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:30,679 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] [2020-08-19 01:04:30,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:04:30,680 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:30,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-19 01:04:30,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:30,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67047114] [2020-08-19 01:04:30,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,952 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:04:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:04:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:04:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:31,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67047114] [2020-08-19 01:04:31,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:31,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:04:31,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297231135] [2020-08-19 01:04:31,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:04:31,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:31,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:04:31,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:04:31,111 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-19 01:04:31,843 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:32,097 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:32,336 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:33,080 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:33,376 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:33,632 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:34,459 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-19 01:04:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:04:34,465 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-19 01:04:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:34,468 INFO L225 Difference]: With dead ends: 448 [2020-08-19 01:04:34,469 INFO L226 Difference]: Without dead ends: 260 [2020-08-19 01:04:34,470 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 [2020-08-19 01:04:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-19 01:04:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-19 01:04:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-19 01:04:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-19 01:04:34,521 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-19 01:04:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:34,522 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-19 01:04:34,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:04:34,522 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-19 01:04:34,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:04:34,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:34,524 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] [2020-08-19 01:04:34,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:04:34,524 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-19 01:04:34,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:34,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521168611] [2020-08-19 01:04:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,771 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:34,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:04:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:04:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:04:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:34,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521168611] [2020-08-19 01:04:34,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:34,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:04:34,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55920655] [2020-08-19 01:04:34,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:04:34,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:34,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:04:34,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:04:34,903 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-19 01:04:35,282 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:35,911 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:37,602 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-19 01:04:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:04:37,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-19 01:04:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:37,605 INFO L225 Difference]: With dead ends: 617 [2020-08-19 01:04:37,605 INFO L226 Difference]: Without dead ends: 425 [2020-08-19 01:04:37,607 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 [2020-08-19 01:04:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-19 01:04:37,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-19 01:04:37,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-19 01:04:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-19 01:04:37,700 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-19 01:04:37,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:37,703 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-19 01:04:37,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:04:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-19 01:04:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 01:04:37,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:37,708 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] [2020-08-19 01:04:37,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:04:37,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:37,709 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-19 01:04:37,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:37,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104811490] [2020-08-19 01:04:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,047 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:04:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:04:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 01:04:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 01:04:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:04:38,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104811490] [2020-08-19 01:04:38,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:38,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:04:38,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427076661] [2020-08-19 01:04:38,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:04:38,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:38,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:04:38,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:04:38,219 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-19 01:04:38,760 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:39,380 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:40,324 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:40,660 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:40,919 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:41,185 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:41,461 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:42,597 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:42,854 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:43,519 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-19 01:04:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:04:43,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-19 01:04:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:43,524 INFO L225 Difference]: With dead ends: 1065 [2020-08-19 01:04:43,525 INFO L226 Difference]: Without dead ends: 776 [2020-08-19 01:04:43,527 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 [2020-08-19 01:04:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-19 01:04:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-19 01:04:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-19 01:04:43,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-19 01:04:43,650 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-19 01:04:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:43,652 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-19 01:04:43,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:04:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-19 01:04:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 01:04:43,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:43,657 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] [2020-08-19 01:04:43,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:04:43,657 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:43,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-19 01:04:43,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:43,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308130353] [2020-08-19 01:04:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,003 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:44,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 01:04:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 01:04:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 01:04:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 01:04:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-19 01:04:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:04:44,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308130353] [2020-08-19 01:04:44,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:44,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:04:44,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643435172] [2020-08-19 01:04:44,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:04:44,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:44,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:04:44,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:04:44,364 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-19 01:04:45,312 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:45,782 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:04:46,040 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:04:46,286 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:04:46,921 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:47,199 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:47,936 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:48,280 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:49,192 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:49,513 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:49,802 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:50,126 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:50,708 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:51,121 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:51,494 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:52,181 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:52,471 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:53,175 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-19 01:04:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-19 01:04:53,176 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-19 01:04:53,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:53,183 INFO L225 Difference]: With dead ends: 1445 [2020-08-19 01:04:53,183 INFO L226 Difference]: Without dead ends: 873 [2020-08-19 01:04:53,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 01:04:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-19 01:04:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-19 01:04:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 01:04:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-19 01:04:53,308 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-19 01:04:53,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:53,309 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-19 01:04:53,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:04:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-19 01:04:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-19 01:04:53,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:53,315 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] [2020-08-19 01:04:53,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:04:53,316 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:53,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:53,316 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-19 01:04:53,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:53,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525902192] [2020-08-19 01:04:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,703 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:04:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 01:04:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:04:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-19 01:04:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 01:04:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-19 01:04:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 01:04:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-19 01:04:54,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525902192] [2020-08-19 01:04:54,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:54,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:04:54,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662152597] [2020-08-19 01:04:54,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:04:54,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:54,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:04:54,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:04:54,313 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-19 01:04:55,920 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:56,181 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:56,429 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:56,668 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:57,994 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:58,647 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-19 01:04:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:04:58,647 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-19 01:04:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:58,655 INFO L225 Difference]: With dead ends: 2078 [2020-08-19 01:04:58,655 INFO L226 Difference]: Without dead ends: 1225 [2020-08-19 01:04:58,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:04:58,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-19 01:04:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-19 01:04:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-19 01:04:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-19 01:04:58,824 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-19 01:04:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:58,824 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-19 01:04:58,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:04:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-19 01:04:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-19 01:04:58,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:58,831 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] [2020-08-19 01:04:58,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:04:58,831 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:58,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:58,832 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-19 01:04:58,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:58,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654331589] [2020-08-19 01:04:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,187 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:59,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:04:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:04:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 01:04:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:04:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-19 01:04:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 01:04:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-19 01:04:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-19 01:04:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 01:04:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-19 01:04:59,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654331589] [2020-08-19 01:04:59,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:59,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:04:59,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054267034] [2020-08-19 01:04:59,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:04:59,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:04:59,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:04:59,579 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-19 01:05:00,345 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:00,690 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:00,966 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:01,221 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:01,978 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:02,790 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:03,165 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:03,480 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:04,087 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:04,887 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:05,152 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:05:05,629 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-19 01:05:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 01:05:05,637 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-19 01:05:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:05:05,643 INFO L225 Difference]: With dead ends: 1968 [2020-08-19 01:05:05,644 INFO L226 Difference]: Without dead ends: 1042 [2020-08-19 01:05:05,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 01:05:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-19 01:05:05,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-19 01:05:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-19 01:05:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-19 01:05:05,836 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-19 01:05:05,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:05:05,839 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-19 01:05:05,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:05:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-19 01:05:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-19 01:05:05,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:05:05,849 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] [2020-08-19 01:05:05,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:05:05,849 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:05:05,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:05:05,850 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-19 01:05:05,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:05:05,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760686824] [2020-08-19 01:05:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:05:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,244 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:05:06,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:05:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:05:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:05:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:05:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:05:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:05:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:05:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:05:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 01:05:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:05:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:05:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-19 01:05:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:05:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-19 01:05:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 01:05:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 01:05:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-19 01:05:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-19 01:05:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-19 01:05:06,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760686824] [2020-08-19 01:05:06,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:05:06,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:05:06,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467718898] [2020-08-19 01:05:06,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:05:06,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:05:06,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:05:06,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:05:06,524 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-19 01:05:08,351 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:08,604 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:05:08,848 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:05:09,113 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190