/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:36:56,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:36:56,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:36:56,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:36:56,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:36:56,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:36:56,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:36:56,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:36:56,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:36:56,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:36:56,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:36:56,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:36:56,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:36:56,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:36:56,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:36:56,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:36:56,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:36:56,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:36:56,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:36:56,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:36:56,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:36:56,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:36:56,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:36:56,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:36:56,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:36:56,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:36:56,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:36:56,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:36:56,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:36:56,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:36:56,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:36:56,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:36:56,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:36:56,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:36:56,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:36:56,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:36:56,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:36:56,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:36:56,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:36:56,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:36:56,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:36:56,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:36:56,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:36:56,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:36:56,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:36:56,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:36:56,096 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:36:56,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:36:56,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:36:56,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:36:56,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:36:56,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:36:56,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:36:56,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:36:56,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:36:56,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:36:56,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:36:56,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:36:56,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:36:56,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:36:56,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:36:56,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:36:56,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:36:56,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:36:56,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:36:56,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:36:56,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:36:56,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:36:56,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:36:56,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:36:56,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:36:56,103 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:36:56,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:36:56,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:36:56,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:36:56,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:36:56,416 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:36:56,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-18 18:36:56,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63970a909/597e6ec972224a45b37dde7423ef68b0/FLAGdf793d625 [2020-08-18 18:36:57,037 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:36:57,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-18 18:36:57,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63970a909/597e6ec972224a45b37dde7423ef68b0/FLAGdf793d625 [2020-08-18 18:36:57,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63970a909/597e6ec972224a45b37dde7423ef68b0 [2020-08-18 18:36:57,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:36:57,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:36:57,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:36:57,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:36:57,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:36:57,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:36:57" (1/1) ... [2020-08-18 18:36:57,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ab6a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:57, skipping insertion in model container [2020-08-18 18:36:57,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:36:57" (1/1) ... [2020-08-18 18:36:57,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:36:57,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:36:57,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:36:57,922 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:36:58,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:36:58,070 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:36:58,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58 WrapperNode [2020-08-18 18:36:58,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:36:58,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:36:58,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:36:58,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:36:58,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... [2020-08-18 18:36:58,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... [2020-08-18 18:36:58,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... [2020-08-18 18:36:58,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... [2020-08-18 18:36:58,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... [2020-08-18 18:36:58,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... [2020-08-18 18:36:58,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... [2020-08-18 18:36:58,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:36:58,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:36:58,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:36:58,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:36:58,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:36:58,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:36:58,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:36:58,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:36:58,244 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:36:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:36:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:36:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:36:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:36:58,245 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:36:58,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:36:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:36:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:36:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:36:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:36:58,247 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:36:58,248 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:36:58,248 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:36:58,248 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:36:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:36:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:36:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:36:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:36:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:36:58,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:36:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:36:58,250 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:36:58,251 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:36:58,251 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:36:58,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:36:58,251 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:36:58,252 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:36:58,252 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:36:58,252 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:36:58,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:36:58,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:36:58,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:36:58,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:36:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:36:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:36:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 18:36:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 18:36:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 18:36:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:36:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:36:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:36:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:36:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:36:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:36:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:36:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:36:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:36:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:36:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:36:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:36:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:36:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 18:36:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 18:36:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:36:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:36:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:36:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 18:36:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:36:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:36:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:36:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:36:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:36:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:36:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:36:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:36:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:36:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:36:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:36:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 18:36:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:36:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:36:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:36:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:36:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:36:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:36:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:36:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:36:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:36:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:36:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:36:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:36:58,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:36:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:36:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:36:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:36:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:36:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:36:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:36:58,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:36:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:36:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:36:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:36:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:36:58,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:36:59,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:36:59,592 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:36:59,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:36:59 BoogieIcfgContainer [2020-08-18 18:36:59,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:36:59,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:36:59,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:36:59,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:36:59,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:36:57" (1/3) ... [2020-08-18 18:36:59,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24831fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:36:59, skipping insertion in model container [2020-08-18 18:36:59,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:36:58" (2/3) ... [2020-08-18 18:36:59,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24831fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:36:59, skipping insertion in model container [2020-08-18 18:36:59,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:36:59" (3/3) ... [2020-08-18 18:36:59,606 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-18 18:36:59,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:36:59,625 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:36:59,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:36:59,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:36:59,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:36:59,664 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:36:59,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:36:59,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:36:59,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:36:59,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:36:59,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:36:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-18 18:36:59,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 18:36:59,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:36:59,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:36:59,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:36:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:36:59,709 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-18 18:36:59,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:36:59,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279413818] [2020-08-18 18:36:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:36:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,423 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:00,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:37:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:37:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:00,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279413818] [2020-08-18 18:37:00,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:00,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:37:00,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666665418] [2020-08-18 18:37:00,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:37:00,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:00,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:37:00,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:37:00,624 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-18 18:37:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:01,705 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-18 18:37:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:37:01,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 18:37:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:01,723 INFO L225 Difference]: With dead ends: 303 [2020-08-18 18:37:01,723 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 18:37:01,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:37:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 18:37:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 18:37:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 18:37:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-18 18:37:01,817 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-18 18:37:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:01,818 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-18 18:37:01,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:37:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-18 18:37:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 18:37:01,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:01,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:01,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:37:01,823 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:01,823 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-18 18:37:01,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:01,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886805735] [2020-08-18 18:37:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,167 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:37:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:37:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:37:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:02,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886805735] [2020-08-18 18:37:02,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:02,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:37:02,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531589454] [2020-08-18 18:37:02,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:37:02,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:02,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:37:02,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:37:02,235 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-18 18:37:02,760 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:03,579 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-18 18:37:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:37:03,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 18:37:03,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:03,584 INFO L225 Difference]: With dead ends: 248 [2020-08-18 18:37:03,584 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 18:37:03,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:37:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 18:37:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-18 18:37:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 18:37:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-18 18:37:03,629 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-18 18:37:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:03,629 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-18 18:37:03,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:37:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-18 18:37:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 18:37:03,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:03,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:03,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:37:03,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:03,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:03,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-18 18:37:03,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:03,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861022946] [2020-08-18 18:37:03,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:03,981 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:37:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:37:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:37:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:04,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861022946] [2020-08-18 18:37:04,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:04,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:37:04,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856209787] [2020-08-18 18:37:04,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:37:04,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:04,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:37:04,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:37:04,096 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-18 18:37:04,498 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:04,820 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:05,112 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:05,356 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:06,570 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-18 18:37:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:37:06,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 18:37:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:06,574 INFO L225 Difference]: With dead ends: 257 [2020-08-18 18:37:06,574 INFO L226 Difference]: Without dead ends: 156 [2020-08-18 18:37:06,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:37:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-18 18:37:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-18 18:37:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 18:37:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-18 18:37:06,611 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-18 18:37:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:06,611 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-18 18:37:06,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:37:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-18 18:37:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 18:37:06,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:06,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:06,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:37:06,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-18 18:37:06,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:06,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404909623] [2020-08-18 18:37:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,872 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:06,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:37:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:37:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 18:37:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 18:37:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:06,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404909623] [2020-08-18 18:37:06,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:06,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:37:06,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932432605] [2020-08-18 18:37:06,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:37:06,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:37:06,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:37:06,981 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-18 18:37:07,399 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:08,709 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:09,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:09,200 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-18 18:37:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:37:09,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 18:37:09,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:09,205 INFO L225 Difference]: With dead ends: 356 [2020-08-18 18:37:09,205 INFO L226 Difference]: Without dead ends: 255 [2020-08-18 18:37:09,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:37:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-18 18:37:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-18 18:37:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-18 18:37:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-18 18:37:09,247 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-18 18:37:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:09,248 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-18 18:37:09,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:37:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-18 18:37:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 18:37:09,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:09,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:09,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:37:09,251 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:09,252 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-18 18:37:09,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:09,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817256501] [2020-08-18 18:37:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,548 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:37:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:37:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:37:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:37:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 18:37:09,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817256501] [2020-08-18 18:37:09,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:09,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:37:09,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106649334] [2020-08-18 18:37:09,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:37:09,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:09,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:37:09,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:37:09,743 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-18 18:37:10,252 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:10,854 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:11,529 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:11,824 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:12,214 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:12,462 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:13,047 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-18 18:37:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:37:13,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-18 18:37:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:13,051 INFO L225 Difference]: With dead ends: 438 [2020-08-18 18:37:13,052 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 18:37:13,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 18:37:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 18:37:13,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-18 18:37:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-18 18:37:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-18 18:37:13,094 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-18 18:37:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:13,094 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-18 18:37:13,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:37:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-18 18:37:13,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 18:37:13,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:13,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:13,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:37:13,097 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:13,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:13,097 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-18 18:37:13,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:13,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427630150] [2020-08-18 18:37:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,352 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:37:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:37:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 18:37:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:37:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:13,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427630150] [2020-08-18 18:37:13,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:13,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 18:37:13,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490251010] [2020-08-18 18:37:13,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 18:37:13,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:13,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 18:37:13,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:37:13,482 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-18 18:37:14,419 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:14,658 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:37:14,900 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:15,138 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:15,788 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-18 18:37:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:37:15,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 18:37:15,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:15,802 INFO L225 Difference]: With dead ends: 436 [2020-08-18 18:37:15,802 INFO L226 Difference]: Without dead ends: 253 [2020-08-18 18:37:15,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:37:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-18 18:37:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-18 18:37:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-18 18:37:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-18 18:37:15,866 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-18 18:37:15,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:15,866 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-18 18:37:15,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 18:37:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-18 18:37:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 18:37:15,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:15,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:15,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:37:15,869 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:15,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:15,869 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-18 18:37:15,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:15,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317300322] [2020-08-18 18:37:15,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,185 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:16,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:37:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:37:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 18:37:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:37:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:16,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317300322] [2020-08-18 18:37:16,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:16,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 18:37:16,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409972436] [2020-08-18 18:37:16,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:37:16,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:16,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:37:16,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:37:16,350 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-18 18:37:16,848 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:17,084 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:17,320 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:17,988 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:18,233 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:18,465 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:19,241 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-18 18:37:19,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 18:37:19,242 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-18 18:37:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:19,245 INFO L225 Difference]: With dead ends: 448 [2020-08-18 18:37:19,246 INFO L226 Difference]: Without dead ends: 260 [2020-08-18 18:37:19,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:37:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-18 18:37:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-18 18:37:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 18:37:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-18 18:37:19,298 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-18 18:37:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:19,299 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-18 18:37:19,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:37:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-18 18:37:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 18:37:19,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:19,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:19,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:37:19,301 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:19,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:19,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-18 18:37:19,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:19,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45738178] [2020-08-18 18:37:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,590 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:37:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:37:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 18:37:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 18:37:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:19,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45738178] [2020-08-18 18:37:19,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:19,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 18:37:19,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970048263] [2020-08-18 18:37:19,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:37:19,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:19,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:37:19,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:37:19,740 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-18 18:37:20,158 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:20,679 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:22,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:22,191 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-18 18:37:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 18:37:22,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-18 18:37:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:22,197 INFO L225 Difference]: With dead ends: 617 [2020-08-18 18:37:22,197 INFO L226 Difference]: Without dead ends: 425 [2020-08-18 18:37:22,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:37:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-18 18:37:22,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-18 18:37:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-18 18:37:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-18 18:37:22,265 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-18 18:37:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:22,265 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-18 18:37:22,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:37:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-18 18:37:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 18:37:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:22,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:22,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:37:22,268 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-18 18:37:22,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:22,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785465223] [2020-08-18 18:37:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,655 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:37:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 18:37:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 18:37:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 18:37:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 18:37:22,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785465223] [2020-08-18 18:37:22,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:37:22,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:37:22,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006653539] [2020-08-18 18:37:22,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:37:22,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:22,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:37:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:37:22,842 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-18 18:37:23,307 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:23,952 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:24,927 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:25,229 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:25,474 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:25,748 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:26,009 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:27,127 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:27,377 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:27,932 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-18 18:37:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 18:37:27,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 18:37:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:27,941 INFO L225 Difference]: With dead ends: 1065 [2020-08-18 18:37:27,941 INFO L226 Difference]: Without dead ends: 776 [2020-08-18 18:37:27,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 18:37:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-18 18:37:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-18 18:37:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-18 18:37:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-18 18:37:28,056 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-18 18:37:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:28,057 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-18 18:37:28,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:37:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-18 18:37:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 18:37:28,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:28,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:28,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:37:28,061 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:28,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:28,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-18 18:37:28,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:28,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866414498] [2020-08-18 18:37:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,365 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:28,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:37:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:37:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 18:37:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 18:37:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 18:37:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 18:37:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 18:37:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 18:37:28,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866414498] [2020-08-18 18:37:28,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:37:28,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 18:37:28,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46128566] [2020-08-18 18:37:28,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 18:37:28,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:28,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 18:37:28,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:37:28,651 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-18 18:37:29,780 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:30,103 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:37:30,392 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:37:30,654 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 18:37:31,283 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:31,570 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:32,280 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:32,629 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:37:33,516 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:33,791 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:37:34,078 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:34,391 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:34,985 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:35,351 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:35,709 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:37:36,336 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:36,600 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:37:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:37,238 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-18 18:37:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-18 18:37:37,239 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-18 18:37:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:37,245 INFO L225 Difference]: With dead ends: 1445 [2020-08-18 18:37:37,245 INFO L226 Difference]: Without dead ends: 873 [2020-08-18 18:37:37,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 18:37:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-18 18:37:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-18 18:37:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 18:37:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-18 18:37:37,371 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-18 18:37:37,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:37,372 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-18 18:37:37,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 18:37:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-18 18:37:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-18 18:37:37,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:37,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:37,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:37:37,379 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-18 18:37:37,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:37,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970343635] [2020-08-18 18:37:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,721 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:37:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:37:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:37:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 18:37:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:37:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-18 18:37:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 18:37:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-18 18:37:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 18:37:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-18 18:37:38,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970343635] [2020-08-18 18:37:38,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:37:38,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 18:37:38,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572063278] [2020-08-18 18:37:38,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 18:37:38,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:38,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 18:37:38,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:37:38,369 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-18 18:37:40,121 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:40,375 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:40,614 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:40,847 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:42,169 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:42,796 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-18 18:37:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 18:37:42,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-18 18:37:42,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:42,806 INFO L225 Difference]: With dead ends: 2078 [2020-08-18 18:37:42,806 INFO L226 Difference]: Without dead ends: 1225 [2020-08-18 18:37:42,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 18:37:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-18 18:37:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-18 18:37:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-18 18:37:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-18 18:37:42,996 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-18 18:37:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:42,997 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-18 18:37:42,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 18:37:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-18 18:37:43,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-18 18:37:43,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:43,004 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:43,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:37:43,004 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:43,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:43,005 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-18 18:37:43,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:43,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025448718] [2020-08-18 18:37:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,326 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:37:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:37:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:37:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:37:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 18:37:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:37:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-18 18:37:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 18:37:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 18:37:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 18:37:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 18:37:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-18 18:37:43,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025448718] [2020-08-18 18:37:43,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:37:43,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 18:37:43,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054267034] [2020-08-18 18:37:43,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 18:37:43,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:43,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 18:37:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:37:43,823 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-18 18:37:44,451 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:44,775 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:45,027 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:45,261 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 18:37:45,882 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:46,632 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 18:37:46,972 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:47,220 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:47,805 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:48,566 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:48,813 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:49,280 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-18 18:37:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 18:37:49,281 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-18 18:37:49,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:49,287 INFO L225 Difference]: With dead ends: 1968 [2020-08-18 18:37:49,288 INFO L226 Difference]: Without dead ends: 1042 [2020-08-18 18:37:49,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 18:37:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-18 18:37:49,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-18 18:37:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-18 18:37:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-18 18:37:49,506 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-18 18:37:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:49,507 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-18 18:37:49,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 18:37:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-18 18:37:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-18 18:37:49,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:49,514 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:49,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:37:49,515 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:49,515 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-18 18:37:49,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:49,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760686824] [2020-08-18 18:37:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,846 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:37:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:37:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:37:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:37:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 18:37:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:37:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-18 18:37:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-18 18:37:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 18:37:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-18 18:37:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-18 18:37:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-18 18:37:50,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760686824] [2020-08-18 18:37:50,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:37:50,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 18:37:50,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467718898] [2020-08-18 18:37:50,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 18:37:50,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:50,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 18:37:50,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-18 18:37:50,131 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-18 18:37:51,857 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 18:37:52,112 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 18:37:52,349 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:52,578 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 18:37:53,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:37:53,050 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-18 18:37:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 18:37:53,051 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-18 18:37:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:37:53,064 INFO L225 Difference]: With dead ends: 1920 [2020-08-18 18:37:53,064 INFO L226 Difference]: Without dead ends: 1034 [2020-08-18 18:37:53,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 18:37:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-18 18:37:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-18 18:37:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-18 18:37:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-18 18:37:53,339 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-18 18:37:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:37:53,343 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-18 18:37:53,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 18:37:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-18 18:37:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-18 18:37:53,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:37:53,351 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:37:53,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 18:37:53,351 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:37:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:37:53,352 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-18 18:37:53,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:37:53,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759972678] [2020-08-18 18:37:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:37:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,801 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:37:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:37:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:37:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:37:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 18:37:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:37:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:37:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:37:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:53,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 18:37:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:37:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:37:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 18:37:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:37:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 18:37:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 18:37:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:37:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-18 18:37:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:37:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-08-18 18:37:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:37:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:37:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:37:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-18 18:37:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-18 18:37:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:37:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 86 proven. 45 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2020-08-18 18:37:54,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759972678] [2020-08-18 18:37:54,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:37:54,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 18:37:54,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22956330] [2020-08-18 18:37:54,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 18:37:54,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:37:54,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 18:37:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:37:54,307 INFO L87 Difference]: Start difference. First operand 1009 states and 1195 transitions. Second operand 15 states.