/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:55:35,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:55:35,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:55:35,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:55:35,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:55:35,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:55:35,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:55:35,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:55:35,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:55:35,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:55:35,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:55:35,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:55:35,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:55:35,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:55:35,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:55:35,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:55:35,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:55:35,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:55:35,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:55:35,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:55:35,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:55:35,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:55:35,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:55:35,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:55:35,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:55:35,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:55:35,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:55:35,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:55:35,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:55:35,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:55:35,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:55:35,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:55:35,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:55:35,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:55:35,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:55:35,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:55:35,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:55:35,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:55:35,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:55:35,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:55:35,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:55:35,377 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 20:55:35,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:55:35,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:55:35,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:55:35,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:55:35,412 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:55:35,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:55:35,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:55:35,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:55:35,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:55:35,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:55:35,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:55:35,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:55:35,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:55:35,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:55:35,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:55:35,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:55:35,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:55:35,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:55:35,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:55:35,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:55:35,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:55:35,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:55:35,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:55:35,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:55:35,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:55:35,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:55:35,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:55:35,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:55:35,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:55:35,417 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:55:35,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:55:35,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:55:35,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:55:35,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:55:35,728 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:55:35,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-18 20:55:35,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca2b4ce9c/6564e1966f8147bc946942fe756ed0f6/FLAGea2736e15 [2020-08-18 20:55:36,281 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:55:36,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product56.cil.c [2020-08-18 20:55:36,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca2b4ce9c/6564e1966f8147bc946942fe756ed0f6/FLAGea2736e15 [2020-08-18 20:55:36,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca2b4ce9c/6564e1966f8147bc946942fe756ed0f6 [2020-08-18 20:55:36,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:55:36,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:55:36,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:36,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:55:36,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:55:36,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:36" (1/1) ... [2020-08-18 20:55:36,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6452952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:36, skipping insertion in model container [2020-08-18 20:55:36,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:36" (1/1) ... [2020-08-18 20:55:36,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:55:36,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:55:37,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:37,175 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:55:37,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:37,371 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:55:37,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37 WrapperNode [2020-08-18 20:55:37,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:37,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:55:37,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:55:37,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:55:37,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (1/1) ... [2020-08-18 20:55:37,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (1/1) ... [2020-08-18 20:55:37,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (1/1) ... [2020-08-18 20:55:37,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (1/1) ... [2020-08-18 20:55:37,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (1/1) ... [2020-08-18 20:55:37,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (1/1) ... [2020-08-18 20:55:37,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (1/1) ... [2020-08-18 20:55:37,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:55:37,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:55:37,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:55:37,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:55:37,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (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 20:55:37,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:55:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:55:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:55:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:55:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:55:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:55:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:55:37,547 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:55:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:55:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:55:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:55:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:55:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:55:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:55:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:55:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:55:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:55:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:55:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:55:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 20:55:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:55:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:55:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:55:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:55:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:55:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:55:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:55:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:55:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:55:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:55:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:55:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:55:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:55:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:55:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:55:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:55:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:55:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:55:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:55:37,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:55:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:55:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:55:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:55:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:55:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:55:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:55:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:55:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:55:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:55:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:55:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:55:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:55:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:55:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:55:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:55:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:55:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:55:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:55:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:55:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:55:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:55:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:55:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:55:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:55:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:55:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:55:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 20:55:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 20:55:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:55:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:55:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:55:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:55:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:55:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:55:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:55:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:55:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:55:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:55:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:55:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 20:55:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:55:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:55:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:55:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:55:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:55:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:55:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:55:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:55:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:55:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:55:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:55:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:55:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:55:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:55:38,903 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:55:38,904 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:55:38,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:55:38 BoogieIcfgContainer [2020-08-18 20:55:38,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:55:38,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:55:38,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:55:38,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:55:38,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:55:36" (1/3) ... [2020-08-18 20:55:38,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b326d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:55:38, skipping insertion in model container [2020-08-18 20:55:38,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:37" (2/3) ... [2020-08-18 20:55:38,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b326d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:55:38, skipping insertion in model container [2020-08-18 20:55:38,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:55:38" (3/3) ... [2020-08-18 20:55:38,917 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product56.cil.c [2020-08-18 20:55:38,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:55:38,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:55:38,950 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:55:38,975 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:55:38,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:55:38,976 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:55:38,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:55:38,976 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:55:38,976 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:55:38,976 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:55:38,976 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:55:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-08-18 20:55:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 20:55:39,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:39,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:39,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:39,019 INFO L82 PathProgramCache]: Analyzing trace with hash -453171886, now seen corresponding path program 1 times [2020-08-18 20:55:39,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:39,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274977993] [2020-08-18 20:55:39,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,765 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:55:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:55:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:39,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274977993] [2020-08-18 20:55:39,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:39,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:55:39,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309237758] [2020-08-18 20:55:39,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:55:39,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:39,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:55:39,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:55:39,907 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 4 states. [2020-08-18 20:55:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:41,164 INFO L93 Difference]: Finished difference Result 353 states and 461 transitions. [2020-08-18 20:55:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:55:41,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 20:55:41,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:41,181 INFO L225 Difference]: With dead ends: 353 [2020-08-18 20:55:41,182 INFO L226 Difference]: Without dead ends: 196 [2020-08-18 20:55:41,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:55:41,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-18 20:55:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 158. [2020-08-18 20:55:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-18 20:55:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-08-18 20:55:41,309 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 51 [2020-08-18 20:55:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:41,310 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-08-18 20:55:41,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:55:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-08-18 20:55:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:55:41,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:41,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:41,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:55:41,315 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash 23130160, now seen corresponding path program 1 times [2020-08-18 20:55:41,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:41,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281392780] [2020-08-18 20:55:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,634 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:41,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:55:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:55:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:41,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281392780] [2020-08-18 20:55:41,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:41,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:55:41,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667595960] [2020-08-18 20:55:41,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:55:41,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:41,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:55:41,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:55:41,694 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 5 states. [2020-08-18 20:55:42,176 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:43,254 INFO L93 Difference]: Finished difference Result 288 states and 360 transitions. [2020-08-18 20:55:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:55:43,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 20:55:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:43,259 INFO L225 Difference]: With dead ends: 288 [2020-08-18 20:55:43,260 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 20:55:43,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:55:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 20:55:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-08-18 20:55:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-18 20:55:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-18 20:55:43,308 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 52 [2020-08-18 20:55:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:43,308 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-18 20:55:43,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:55:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-18 20:55:43,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 20:55:43,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:43,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:43,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:55:43,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:43,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:43,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1418292754, now seen corresponding path program 1 times [2020-08-18 20:55:43,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:43,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67083565] [2020-08-18 20:55:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,675 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:55:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:55:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:43,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67083565] [2020-08-18 20:55:43,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:43,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:55:43,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464126053] [2020-08-18 20:55:43,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:55:43,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:43,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:55:43,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:55:43,780 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-18 20:55:44,188 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:44,478 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:44,719 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:44,974 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:45,716 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:55:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:48,033 INFO L93 Difference]: Finished difference Result 503 states and 637 transitions. [2020-08-18 20:55:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:55:48,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-18 20:55:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:48,049 INFO L225 Difference]: With dead ends: 503 [2020-08-18 20:55:48,049 INFO L226 Difference]: Without dead ends: 382 [2020-08-18 20:55:48,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:55:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-08-18 20:55:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 309. [2020-08-18 20:55:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-08-18 20:55:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2020-08-18 20:55:48,136 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 57 [2020-08-18 20:55:48,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:48,136 INFO L479 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2020-08-18 20:55:48,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:55:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2020-08-18 20:55:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 20:55:48,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:48,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:48,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:55:48,141 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:48,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:48,141 INFO L82 PathProgramCache]: Analyzing trace with hash -335998659, now seen corresponding path program 1 times [2020-08-18 20:55:48,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:48,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765821433] [2020-08-18 20:55:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,444 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:55:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:55:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 20:55:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:48,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765821433] [2020-08-18 20:55:48,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:48,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:55:48,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789464416] [2020-08-18 20:55:48,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:55:48,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:48,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:55:48,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:55:48,614 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand 9 states. [2020-08-18 20:55:48,975 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:49,945 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:50,410 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:50,645 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:50,872 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:52,780 INFO L93 Difference]: Finished difference Result 992 states and 1314 transitions. [2020-08-18 20:55:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 20:55:52,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 20:55:52,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:52,796 INFO L225 Difference]: With dead ends: 992 [2020-08-18 20:55:52,796 INFO L226 Difference]: Without dead ends: 711 [2020-08-18 20:55:52,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 20:55:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-08-18 20:55:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 566. [2020-08-18 20:55:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-08-18 20:55:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 696 transitions. [2020-08-18 20:55:52,966 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 696 transitions. Word has length 62 [2020-08-18 20:55:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:52,967 INFO L479 AbstractCegarLoop]: Abstraction has 566 states and 696 transitions. [2020-08-18 20:55:52,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:55:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 696 transitions. [2020-08-18 20:55:52,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 20:55:52,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:52,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:52,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:55:52,972 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:52,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:52,973 INFO L82 PathProgramCache]: Analyzing trace with hash 563759321, now seen corresponding path program 1 times [2020-08-18 20:55:52,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:52,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1172468186] [2020-08-18 20:55:52,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,272 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:55:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:55:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 20:55:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:53,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1172468186] [2020-08-18 20:55:53,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:53,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:53,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420370176] [2020-08-18 20:55:53,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:53,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:53,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:53,368 INFO L87 Difference]: Start difference. First operand 566 states and 696 transitions. Second operand 10 states. [2020-08-18 20:55:53,728 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:54,756 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:55,025 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:55,293 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:55,964 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:55:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:55:57,511 INFO L93 Difference]: Finished difference Result 1565 states and 2138 transitions. [2020-08-18 20:55:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 20:55:57,511 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 20:55:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:55:57,520 INFO L225 Difference]: With dead ends: 1565 [2020-08-18 20:55:57,520 INFO L226 Difference]: Without dead ends: 1027 [2020-08-18 20:55:57,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:55:57,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-08-18 20:55:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 821. [2020-08-18 20:55:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-08-18 20:55:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2020-08-18 20:55:57,690 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 66 [2020-08-18 20:55:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:55:57,691 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2020-08-18 20:55:57,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:55:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2020-08-18 20:55:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 20:55:57,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:57,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:57,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:55:57,695 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:57,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1340944239, now seen corresponding path program 1 times [2020-08-18 20:55:57,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:57,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697237401] [2020-08-18 20:55:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,939 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:55:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:55:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:55:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:55:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:55:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:55:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:55:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:55:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:57,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:58,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:55:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:55:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:55:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:58,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:55:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:58,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 20:55:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:55:58,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697237401] [2020-08-18 20:55:58,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:55:58,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 20:55:58,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552099451] [2020-08-18 20:55:58,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:55:58,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:55:58,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:55:58,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:55:58,091 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 10 states. [2020-08-18 20:55:59,288 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:55:59,537 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:55:59,797 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:00,078 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:01,493 INFO L93 Difference]: Finished difference Result 1894 states and 2518 transitions. [2020-08-18 20:56:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:56:01,494 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-18 20:56:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:01,504 INFO L225 Difference]: With dead ends: 1894 [2020-08-18 20:56:01,504 INFO L226 Difference]: Without dead ends: 1101 [2020-08-18 20:56:01,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:56:01,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-08-18 20:56:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 847. [2020-08-18 20:56:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-18 20:56:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1027 transitions. [2020-08-18 20:56:01,747 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1027 transitions. Word has length 94 [2020-08-18 20:56:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:01,747 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1027 transitions. [2020-08-18 20:56:01,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:56:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1027 transitions. [2020-08-18 20:56:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 20:56:01,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:01,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:01,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:56:01,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:01,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:01,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1413330797, now seen corresponding path program 1 times [2020-08-18 20:56:01,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:01,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960785889] [2020-08-18 20:56:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,150 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:02,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:56:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:56:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 20:56:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:02,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960785889] [2020-08-18 20:56:02,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:02,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:56:02,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260430625] [2020-08-18 20:56:02,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:56:02,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:02,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:56:02,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:56:02,361 INFO L87 Difference]: Start difference. First operand 847 states and 1027 transitions. Second operand 12 states. [2020-08-18 20:56:02,916 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:03,158 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:03,397 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:04,297 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:04,581 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:04,855 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:06,653 INFO L93 Difference]: Finished difference Result 1948 states and 2635 transitions. [2020-08-18 20:56:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:56:06,657 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-18 20:56:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:06,666 INFO L225 Difference]: With dead ends: 1948 [2020-08-18 20:56:06,666 INFO L226 Difference]: Without dead ends: 1129 [2020-08-18 20:56:06,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 20:56:06,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-08-18 20:56:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 863. [2020-08-18 20:56:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-08-18 20:56:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1043 transitions. [2020-08-18 20:56:06,862 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1043 transitions. Word has length 94 [2020-08-18 20:56:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:06,863 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1043 transitions. [2020-08-18 20:56:06,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:56:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1043 transitions. [2020-08-18 20:56:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 20:56:06,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:06,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:06,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:56:06,866 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:06,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:06,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1083565036, now seen corresponding path program 1 times [2020-08-18 20:56:06,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:06,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167605525] [2020-08-18 20:56:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,156 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:56:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:56:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 20:56:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:07,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167605525] [2020-08-18 20:56:07,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:07,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:07,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786213804] [2020-08-18 20:56:07,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:07,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:07,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:07,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:07,362 INFO L87 Difference]: Start difference. First operand 863 states and 1043 transitions. Second operand 8 states. [2020-08-18 20:56:07,711 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:08,267 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:11,388 INFO L93 Difference]: Finished difference Result 2919 states and 3977 transitions. [2020-08-18 20:56:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 20:56:11,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 20:56:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:11,407 INFO L225 Difference]: With dead ends: 2919 [2020-08-18 20:56:11,407 INFO L226 Difference]: Without dead ends: 2084 [2020-08-18 20:56:11,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-18 20:56:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2020-08-18 20:56:11,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1727. [2020-08-18 20:56:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1727 states. [2020-08-18 20:56:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2109 transitions. [2020-08-18 20:56:11,819 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2109 transitions. Word has length 94 [2020-08-18 20:56:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:11,820 INFO L479 AbstractCegarLoop]: Abstraction has 1727 states and 2109 transitions. [2020-08-18 20:56:11,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2109 transitions. [2020-08-18 20:56:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 20:56:11,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:11,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:11,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:56:11,826 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash -452793586, now seen corresponding path program 1 times [2020-08-18 20:56:11,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:11,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682469889] [2020-08-18 20:56:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,086 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 20:56:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 20:56:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-18 20:56:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:12,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682469889] [2020-08-18 20:56:12,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:12,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:12,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545631466] [2020-08-18 20:56:12,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:12,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:12,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:12,203 INFO L87 Difference]: Start difference. First operand 1727 states and 2109 transitions. Second operand 8 states. [2020-08-18 20:56:12,530 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:15,798 INFO L93 Difference]: Finished difference Result 3491 states and 4776 transitions. [2020-08-18 20:56:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 20:56:15,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-18 20:56:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:15,820 INFO L225 Difference]: With dead ends: 3491 [2020-08-18 20:56:15,820 INFO L226 Difference]: Without dead ends: 3488 [2020-08-18 20:56:15,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 20:56:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-08-18 20:56:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2882. [2020-08-18 20:56:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-08-18 20:56:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3603 transitions. [2020-08-18 20:56:16,469 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3603 transitions. Word has length 98 [2020-08-18 20:56:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:16,470 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 3603 transitions. [2020-08-18 20:56:16,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3603 transitions. [2020-08-18 20:56:16,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 20:56:16,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:16,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 20:56:16,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:56:16,483 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:16,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2137087651, now seen corresponding path program 1 times [2020-08-18 20:56:16,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:16,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707089932] [2020-08-18 20:56:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:16,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,785 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:56:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 20:56:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:16,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 20:56:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 20:56:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-18 20:56:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-08-18 20:56:17,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707089932] [2020-08-18 20:56:17,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:56:17,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 20:56:17,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124271490] [2020-08-18 20:56:17,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:56:17,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:17,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:56:17,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:56:17,069 INFO L87 Difference]: Start difference. First operand 2882 states and 3603 transitions. Second operand 14 states. [2020-08-18 20:56:17,663 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:18,038 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:18,279 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:56:18,847 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:20,497 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:22,896 INFO L93 Difference]: Finished difference Result 5611 states and 7325 transitions. [2020-08-18 20:56:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-18 20:56:22,897 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 166 [2020-08-18 20:56:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:22,917 INFO L225 Difference]: With dead ends: 5611 [2020-08-18 20:56:22,917 INFO L226 Difference]: Without dead ends: 3113 [2020-08-18 20:56:22,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=364, Invalid=1528, Unknown=0, NotChecked=0, Total=1892 [2020-08-18 20:56:22,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2020-08-18 20:56:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 2736. [2020-08-18 20:56:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-08-18 20:56:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3204 transitions. [2020-08-18 20:56:23,662 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3204 transitions. Word has length 166 [2020-08-18 20:56:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:23,662 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3204 transitions. [2020-08-18 20:56:23,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:56:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3204 transitions. [2020-08-18 20:56:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-18 20:56:23,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:23,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-18 20:56:23,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:56:23,672 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1460495039, now seen corresponding path program 1 times [2020-08-18 20:56:23,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:23,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430431263] [2020-08-18 20:56:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,936 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:23,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:56:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:56:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 20:56:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-18 20:56:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 20:56:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-08-18 20:56:24,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430431263] [2020-08-18 20:56:24,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:56:24,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 20:56:24,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050303635] [2020-08-18 20:56:24,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 20:56:24,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:24,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 20:56:24,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:56:24,142 INFO L87 Difference]: Start difference. First operand 2736 states and 3204 transitions. Second operand 10 states. [2020-08-18 20:56:25,045 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:27,949 INFO L93 Difference]: Finished difference Result 4533 states and 5525 transitions. [2020-08-18 20:56:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-18 20:56:27,949 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-08-18 20:56:27,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:27,961 INFO L225 Difference]: With dead ends: 4533 [2020-08-18 20:56:27,961 INFO L226 Difference]: Without dead ends: 1835 [2020-08-18 20:56:27,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=354, Invalid=1128, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 20:56:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2020-08-18 20:56:28,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1269. [2020-08-18 20:56:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-18 20:56:28,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1471 transitions. [2020-08-18 20:56:28,291 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1471 transitions. Word has length 171 [2020-08-18 20:56:28,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:28,293 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1471 transitions. [2020-08-18 20:56:28,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 20:56:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1471 transitions. [2020-08-18 20:56:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-18 20:56:28,300 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:28,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:28,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:56:28,301 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash 177222806, now seen corresponding path program 1 times [2020-08-18 20:56:28,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:28,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569920213] [2020-08-18 20:56:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,799 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:28,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:56:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:56:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 20:56:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 20:56:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 20:56:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 20:56:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 20:56:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 20:56:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-18 20:56:29,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569920213] [2020-08-18 20:56:29,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:56:29,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 20:56:29,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810940519] [2020-08-18 20:56:29,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 20:56:29,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 20:56:29,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:56:29,140 INFO L87 Difference]: Start difference. First operand 1269 states and 1471 transitions. Second operand 19 states. [2020-08-18 20:56:29,598 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:29,920 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:56:30,185 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:56:30,422 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:56:31,159 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:56:31,781 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191