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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:34:49,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:34:49,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:34:49,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:34:49,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:34:49,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:34:49,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:34:49,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:34:49,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:34:49,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:34:49,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:34:49,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:34:49,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:34:49,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:34:49,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:34:49,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:34:49,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:34:49,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:34:49,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:34:49,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:34:49,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:34:49,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:34:49,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:34:49,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:34:49,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:34:49,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:34:49,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:34:49,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:34:49,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:34:49,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:34:49,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:34:49,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:34:49,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:34:49,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:34:49,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:34:49,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:34:49,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:34:49,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:34:49,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:34:49,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:34:49,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:34:49,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:34:49,391 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:34:49,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:34:49,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:34:49,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:34:49,394 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:34:49,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:34:49,394 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:34:49,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:34:49,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:34:49,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:34:49,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:34:49,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:34:49,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:34:49,395 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:34:49,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:34:49,396 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:34:49,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:34:49,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:34:49,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:34:49,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:34:49,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:34:49,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:49,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:34:49,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:34:49,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:34:49,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:34:49,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:34:49,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:34:49,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:34:49,691 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:34:49,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:34:49,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:34:49,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:34:49,711 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:34:49,712 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-10-13 19:34:49,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcf5a351d/da33de3442aa452690128bb54f11c564/FLAG9a9901716 [2019-10-13 19:34:50,379 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:34:50,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-10-13 19:34:50,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcf5a351d/da33de3442aa452690128bb54f11c564/FLAG9a9901716 [2019-10-13 19:34:50,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcf5a351d/da33de3442aa452690128bb54f11c564 [2019-10-13 19:34:50,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:34:50,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:34:50,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:50,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:34:50,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:34:50,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:50" (1/1) ... [2019-10-13 19:34:50,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efb01e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:50, skipping insertion in model container [2019-10-13 19:34:50,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:50" (1/1) ... [2019-10-13 19:34:50,671 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:34:50,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:34:51,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:51,203 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:34:51,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:51,365 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:34:51,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51 WrapperNode [2019-10-13 19:34:51,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:51,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:34:51,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:34:51,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:34:51,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... [2019-10-13 19:34:51,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... [2019-10-13 19:34:51,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... [2019-10-13 19:34:51,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... [2019-10-13 19:34:51,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... [2019-10-13 19:34:51,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... [2019-10-13 19:34:51,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... [2019-10-13 19:34:51,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:34:51,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:34:51,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:34:51,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:34:51,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 19:34:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:34:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:34:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:34:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:34:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:34:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:34:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:34:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:34:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:34:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:34:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:34:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:34:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:34:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:34:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:34:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:34:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:34:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:34:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:34:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:34:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:34:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:34:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:34:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:34:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:34:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:34:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:34:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:34:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:34:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:34:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:34:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:34:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:34:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:34:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:34:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:34:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:34:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:34:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:34:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:34:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:34:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:34:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:34:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:34:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:34:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:34:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:34:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:34:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:34:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:34:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:34:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:34:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:34:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:34:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:34:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:34:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:34:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:34:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:34:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:34:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:34:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:34:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:34:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:34:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:34:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:34:51,514 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:34:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:34:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:34:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:34:51,515 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:34:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:34:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:34:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:34:51,516 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:34:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:34:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:34:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:34:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:34:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:34:51,517 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:34:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:34:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:34:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:34:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:34:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:34:52,635 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:34:52,636 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:34:52,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:52 BoogieIcfgContainer [2019-10-13 19:34:52,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:34:52,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:34:52,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:34:52,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:34:52,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:34:50" (1/3) ... [2019-10-13 19:34:52,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1649a739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:52, skipping insertion in model container [2019-10-13 19:34:52,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:51" (2/3) ... [2019-10-13 19:34:52,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1649a739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:52, skipping insertion in model container [2019-10-13 19:34:52,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:52" (3/3) ... [2019-10-13 19:34:52,649 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product48.cil.c [2019-10-13 19:34:52,659 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:34:52,668 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:34:52,680 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:34:52,708 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:34:52,708 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:34:52,708 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:34:52,708 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:34:52,708 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:34:52,708 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:34:52,709 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:34:52,709 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:34:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-10-13 19:34:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:34:52,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:52,743 INFO L380 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] [2019-10-13 19:34:52,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:52,750 INFO L82 PathProgramCache]: Analyzing trace with hash -952681071, now seen corresponding path program 1 times [2019-10-13 19:34:52,759 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:52,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19116201] [2019-10-13 19:34:52,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:52,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:52,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,414 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:53,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19116201] [2019-10-13 19:34:53,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:53,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:34:53,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862019477] [2019-10-13 19:34:53,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:34:53,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:53,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:34:53,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:53,547 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2019-10-13 19:34:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:54,949 INFO L93 Difference]: Finished difference Result 326 states and 427 transitions. [2019-10-13 19:34:54,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:34:54,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:34:54,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:54,967 INFO L225 Difference]: With dead ends: 326 [2019-10-13 19:34:54,967 INFO L226 Difference]: Without dead ends: 177 [2019-10-13 19:34:54,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:54,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-10-13 19:34:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 140. [2019-10-13 19:34:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-13 19:34:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2019-10-13 19:34:55,066 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 46 [2019-10-13 19:34:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:55,066 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2019-10-13 19:34:55,067 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:34:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2019-10-13 19:34:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:34:55,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:55,070 INFO L380 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] [2019-10-13 19:34:55,071 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:55,071 INFO L82 PathProgramCache]: Analyzing trace with hash -448216280, now seen corresponding path program 1 times [2019-10-13 19:34:55,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:55,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658734687] [2019-10-13 19:34:55,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:55,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:55,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,426 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:55,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658734687] [2019-10-13 19:34:55,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:55,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:34:55,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86871754] [2019-10-13 19:34:55,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:34:55,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:55,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:34:55,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:34:55,508 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 4 states. [2019-10-13 19:34:55,953 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:34:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:56,917 INFO L93 Difference]: Finished difference Result 249 states and 306 transitions. [2019-10-13 19:34:56,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:34:56,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:34:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:56,921 INFO L225 Difference]: With dead ends: 249 [2019-10-13 19:34:56,921 INFO L226 Difference]: Without dead ends: 161 [2019-10-13 19:34:56,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:34:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-13 19:34:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 131. [2019-10-13 19:34:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-10-13 19:34:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2019-10-13 19:34:56,962 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 47 [2019-10-13 19:34:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:56,962 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2019-10-13 19:34:56,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:34:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2019-10-13 19:34:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:34:56,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:56,965 INFO L380 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] [2019-10-13 19:34:56,965 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:56,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:56,965 INFO L82 PathProgramCache]: Analyzing trace with hash -673738792, now seen corresponding path program 1 times [2019-10-13 19:34:56,966 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:56,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224331505] [2019-10-13 19:34:56,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:56,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:56,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,368 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:57,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224331505] [2019-10-13 19:34:57,545 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:57,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:34:57,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350670618] [2019-10-13 19:34:57,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:34:57,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:34:57,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:34:57,548 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand 8 states. [2019-10-13 19:34:58,060 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:34:58,453 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:34:58,731 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:58,981 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:34:59,807 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:01,894 INFO L93 Difference]: Finished difference Result 452 states and 563 transitions. [2019-10-13 19:35:01,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:01,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 19:35:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:01,900 INFO L225 Difference]: With dead ends: 452 [2019-10-13 19:35:01,900 INFO L226 Difference]: Without dead ends: 345 [2019-10-13 19:35:01,902 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:35:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-10-13 19:35:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 276. [2019-10-13 19:35:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2019-10-13 19:35:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2019-10-13 19:35:01,969 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 52 [2019-10-13 19:35:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:01,970 INFO L462 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2019-10-13 19:35:01,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2019-10-13 19:35:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:35:01,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:01,973 INFO L380 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] [2019-10-13 19:35:01,973 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:01,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1909301517, now seen corresponding path program 1 times [2019-10-13 19:35:01,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:01,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495734780] [2019-10-13 19:35:01,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:01,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:01,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,336 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:02,417 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495734780] [2019-10-13 19:35:02,417 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:02,417 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:02,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808429004] [2019-10-13 19:35:02,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:02,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:02,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:02,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:02,419 INFO L87 Difference]: Start difference. First operand 276 states and 336 transitions. Second operand 8 states. [2019-10-13 19:35:02,830 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:03,898 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:04,279 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:04,572 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:04,896 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:05,459 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:06,714 INFO L93 Difference]: Finished difference Result 897 states and 1167 transitions. [2019-10-13 19:35:06,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:06,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:35:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:06,722 INFO L225 Difference]: With dead ends: 897 [2019-10-13 19:35:06,722 INFO L226 Difference]: Without dead ends: 645 [2019-10-13 19:35:06,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-10-13 19:35:06,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 507. [2019-10-13 19:35:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-10-13 19:35:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 622 transitions. [2019-10-13 19:35:06,882 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 622 transitions. Word has length 57 [2019-10-13 19:35:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:06,883 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 622 transitions. [2019-10-13 19:35:06,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 622 transitions. [2019-10-13 19:35:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:35:06,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:06,887 INFO L380 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] [2019-10-13 19:35:06,887 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:06,888 INFO L82 PathProgramCache]: Analyzing trace with hash 431982967, now seen corresponding path program 1 times [2019-10-13 19:35:06,888 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:06,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195061375] [2019-10-13 19:35:06,888 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:06,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:06,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,227 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:07,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195061375] [2019-10-13 19:35:07,335 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:07,335 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:07,335 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843865270] [2019-10-13 19:35:07,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:07,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:07,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:07,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:07,338 INFO L87 Difference]: Start difference. First operand 507 states and 622 transitions. Second operand 9 states. [2019-10-13 19:35:08,023 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:09,167 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:09,468 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:09,766 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:10,529 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:10,889 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:12,084 INFO L93 Difference]: Finished difference Result 1445 states and 1936 transitions. [2019-10-13 19:35:12,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:35:12,088 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-13 19:35:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:12,103 INFO L225 Difference]: With dead ends: 1445 [2019-10-13 19:35:12,103 INFO L226 Difference]: Without dead ends: 962 [2019-10-13 19:35:12,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-10-13 19:35:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 775. [2019-10-13 19:35:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2019-10-13 19:35:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 951 transitions. [2019-10-13 19:35:12,336 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 951 transitions. Word has length 61 [2019-10-13 19:35:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:12,336 INFO L462 AbstractCegarLoop]: Abstraction has 775 states and 951 transitions. [2019-10-13 19:35:12,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 951 transitions. [2019-10-13 19:35:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:35:12,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:12,341 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:12,341 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash -597595789, now seen corresponding path program 1 times [2019-10-13 19:35:12,342 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:12,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215989158] [2019-10-13 19:35:12,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:12,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:12,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,727 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:12,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215989158] [2019-10-13 19:35:12,930 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:12,930 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:12,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125397194] [2019-10-13 19:35:12,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:12,931 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:12,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:12,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:12,932 INFO L87 Difference]: Start difference. First operand 775 states and 951 transitions. Second operand 9 states. [2019-10-13 19:35:13,504 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:14,797 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:15,149 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:35:15,430 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:15,760 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:35:17,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:17,714 INFO L93 Difference]: Finished difference Result 2577 states and 3608 transitions. [2019-10-13 19:35:17,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:35:17,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2019-10-13 19:35:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:17,727 INFO L225 Difference]: With dead ends: 2577 [2019-10-13 19:35:17,728 INFO L226 Difference]: Without dead ends: 1826 [2019-10-13 19:35:17,732 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:35:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2019-10-13 19:35:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1403. [2019-10-13 19:35:17,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2019-10-13 19:35:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1706 transitions. [2019-10-13 19:35:18,000 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1706 transitions. Word has length 99 [2019-10-13 19:35:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:18,001 INFO L462 AbstractCegarLoop]: Abstraction has 1403 states and 1706 transitions. [2019-10-13 19:35:18,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1706 transitions. [2019-10-13 19:35:18,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:35:18,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:18,009 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:18,009 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:18,009 INFO L82 PathProgramCache]: Analyzing trace with hash -589836430, now seen corresponding path program 1 times [2019-10-13 19:35:18,010 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:18,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794826372] [2019-10-13 19:35:18,010 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:18,010 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:18,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,286 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:18,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794826372] [2019-10-13 19:35:18,464 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:18,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:18,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305422257] [2019-10-13 19:35:18,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:18,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:18,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:18,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:18,467 INFO L87 Difference]: Start difference. First operand 1403 states and 1706 transitions. Second operand 9 states. [2019-10-13 19:35:19,925 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:20,197 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:35:20,499 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:20,771 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:21,992 INFO L93 Difference]: Finished difference Result 3221 states and 4321 transitions. [2019-10-13 19:35:21,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:21,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2019-10-13 19:35:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:22,006 INFO L225 Difference]: With dead ends: 3221 [2019-10-13 19:35:22,007 INFO L226 Difference]: Without dead ends: 1842 [2019-10-13 19:35:22,012 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2019-10-13 19:35:22,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1443. [2019-10-13 19:35:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2019-10-13 19:35:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1746 transitions. [2019-10-13 19:35:22,255 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1746 transitions. Word has length 99 [2019-10-13 19:35:22,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:22,255 INFO L462 AbstractCegarLoop]: Abstraction has 1443 states and 1746 transitions. [2019-10-13 19:35:22,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:22,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1746 transitions. [2019-10-13 19:35:22,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:35:22,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:22,259 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:22,260 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:22,260 INFO L82 PathProgramCache]: Analyzing trace with hash 303649908, now seen corresponding path program 1 times [2019-10-13 19:35:22,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:22,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827405211] [2019-10-13 19:35:22,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:22,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:22,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,576 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:22,705 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827405211] [2019-10-13 19:35:22,705 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:22,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:35:22,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147493664] [2019-10-13 19:35:22,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:35:22,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:35:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:22,707 INFO L87 Difference]: Start difference. First operand 1443 states and 1746 transitions. Second operand 11 states. [2019-10-13 19:35:23,619 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:23,871 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:24,120 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:24,942 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:25,246 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:25,532 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:26,892 INFO L93 Difference]: Finished difference Result 2835 states and 3696 transitions. [2019-10-13 19:35:26,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:26,893 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2019-10-13 19:35:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:26,902 INFO L225 Difference]: With dead ends: 2835 [2019-10-13 19:35:26,903 INFO L226 Difference]: Without dead ends: 1416 [2019-10-13 19:35:26,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:35:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2019-10-13 19:35:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1153. [2019-10-13 19:35:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2019-10-13 19:35:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1370 transitions. [2019-10-13 19:35:27,147 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1370 transitions. Word has length 99 [2019-10-13 19:35:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:27,147 INFO L462 AbstractCegarLoop]: Abstraction has 1153 states and 1370 transitions. [2019-10-13 19:35:27,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:35:27,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1370 transitions. [2019-10-13 19:35:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:27,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:27,153 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:27,154 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1696809349, now seen corresponding path program 1 times [2019-10-13 19:35:27,154 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:27,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049455480] [2019-10-13 19:35:27,155 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:27,155 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:27,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,592 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:35:27,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049455480] [2019-10-13 19:35:27,840 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180647266] [2019-10-13 19:35:27,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:28,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:28,307 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:28,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-13 19:35:28,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242861759] [2019-10-13 19:35:28,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:28,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:28,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:28,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:28,309 INFO L87 Difference]: Start difference. First operand 1153 states and 1370 transitions. Second operand 8 states.