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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:15:38,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:15:38,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:15:38,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:15:38,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:15:38,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:15:38,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:15:38,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:15:38,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:15:38,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:15:38,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:15:38,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:15:38,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:15:38,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:15:38,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:15:38,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:15:38,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:15:38,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:15:38,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:15:38,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:15:38,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:15:38,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:15:38,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:15:38,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:15:38,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:15:38,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:15:38,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:15:38,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:15:38,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:15:38,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:15:38,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:15:38,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:15:38,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:15:38,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:15:38,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:15:38,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:15:38,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:15:38,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:15:38,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:15:38,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:15:38,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:15:38,537 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 23:15:38,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:15:38,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:15:38,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:15:38,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:15:38,560 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:15:38,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:15:38,560 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:15:38,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:15:38,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:15:38,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:15:38,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:15:38,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:15:38,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:15:38,563 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:15:38,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:15:38,563 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:15:38,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:15:38,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:15:38,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:15:38,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:15:38,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:15:38,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:15:38,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:15:38,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:15:38,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:15:38,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:15:38,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:15:38,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:15:38,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:15:38,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:15:38,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:15:38,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:15:38,922 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:15:38,922 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:15:38,923 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-10-13 23:15:38,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0778c0af7/53b156b26a3f4f2fa1fa47b369d79193/FLAG7dd2e5cd3 [2019-10-13 23:15:39,513 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:15:39,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-10-13 23:15:39,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0778c0af7/53b156b26a3f4f2fa1fa47b369d79193/FLAG7dd2e5cd3 [2019-10-13 23:15:39,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0778c0af7/53b156b26a3f4f2fa1fa47b369d79193 [2019-10-13 23:15:39,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:15:39,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:15:39,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:39,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:15:39,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:15:39,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:39" (1/1) ... [2019-10-13 23:15:39,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6748c9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:39, skipping insertion in model container [2019-10-13 23:15:39,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:39" (1/1) ... [2019-10-13 23:15:39,825 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:15:39,882 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:15:40,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:40,321 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:15:40,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:40,493 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:15:40,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40 WrapperNode [2019-10-13 23:15:40,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:40,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:15:40,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:15:40,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:15:40,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (1/1) ... [2019-10-13 23:15:40,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (1/1) ... [2019-10-13 23:15:40,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (1/1) ... [2019-10-13 23:15:40,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (1/1) ... [2019-10-13 23:15:40,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (1/1) ... [2019-10-13 23:15:40,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (1/1) ... [2019-10-13 23:15:40,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (1/1) ... [2019-10-13 23:15:40,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:15:40,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:15:40,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:15:40,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:15:40,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (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 23:15:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:15:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:15:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:15:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:15:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:15:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:15:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:15:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:15:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:15:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:15:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:15:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:15:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:15:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:15:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:15:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:15:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:15:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:15:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:15:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:15:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:15:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:15:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:15:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:15:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:15:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:15:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:15:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:15:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:15:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:15:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:15:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:15:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:15:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:15:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:15:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:15:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:15:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:15:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:15:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:15:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:15:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:15:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:15:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:15:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:15:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:15:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:15:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:15:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:15:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:15:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:15:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:15:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:15:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:15:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:15:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:15:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:15:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:15:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:15:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:15:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:15:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:15:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:15:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:15:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:15:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:15:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:15:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:15:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:15:40,668 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:15:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:15:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:15:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:15:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:40,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:15:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:15:40,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:15:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:15:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:15:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:40,672 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:15:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:15:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:15:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:15:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:15:40,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:15:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:15:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:15:42,369 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:15:42,370 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:15:42,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:42 BoogieIcfgContainer [2019-10-13 23:15:42,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:15:42,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:15:42,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:15:42,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:15:42,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:15:39" (1/3) ... [2019-10-13 23:15:42,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2d9953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:42, skipping insertion in model container [2019-10-13 23:15:42,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:40" (2/3) ... [2019-10-13 23:15:42,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2d9953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:42, skipping insertion in model container [2019-10-13 23:15:42,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:42" (3/3) ... [2019-10-13 23:15:42,380 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2019-10-13 23:15:42,391 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:15:42,400 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:15:42,413 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:15:42,441 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:15:42,441 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:15:42,442 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:15:42,442 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:15:42,442 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:15:42,442 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:15:42,442 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:15:42,443 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:15:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2019-10-13 23:15:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 23:15:42,477 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:42,478 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 23:15:42,480 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:42,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2121098684, now seen corresponding path program 1 times [2019-10-13 23:15:42,498 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:42,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287339154] [2019-10-13 23:15:42,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:42,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:42,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:42,895 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 23:15:42,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287339154] [2019-10-13 23:15:42,900 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:42,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:15:42,901 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516313581] [2019-10-13 23:15:42,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:15:42,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:42,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:15:42,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:15:42,928 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 2 states. [2019-10-13 23:15:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:43,001 INFO L93 Difference]: Finished difference Result 252 states and 307 transitions. [2019-10-13 23:15:43,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:15:43,003 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-13 23:15:43,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:43,021 INFO L225 Difference]: With dead ends: 252 [2019-10-13 23:15:43,022 INFO L226 Difference]: Without dead ends: 128 [2019-10-13 23:15:43,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:15:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-13 23:15:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-13 23:15:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-13 23:15:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2019-10-13 23:15:43,098 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 46 [2019-10-13 23:15:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:43,100 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2019-10-13 23:15:43,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:15:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2019-10-13 23:15:43,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 23:15:43,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:43,109 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 23:15:43,109 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:43,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1668927638, now seen corresponding path program 1 times [2019-10-13 23:15:43,111 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:43,112 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10520704] [2019-10-13 23:15:43,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:43,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:43,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:43,316 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 23:15:43,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10520704] [2019-10-13 23:15:43,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:43,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:15:43,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110177700] [2019-10-13 23:15:43,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:43,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:43,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:43,322 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 3 states. [2019-10-13 23:15:43,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:43,374 INFO L93 Difference]: Finished difference Result 203 states and 235 transitions. [2019-10-13 23:15:43,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:43,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-13 23:15:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:43,381 INFO L225 Difference]: With dead ends: 203 [2019-10-13 23:15:43,382 INFO L226 Difference]: Without dead ends: 120 [2019-10-13 23:15:43,383 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-13 23:15:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-13 23:15:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-13 23:15:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2019-10-13 23:15:43,410 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 47 [2019-10-13 23:15:43,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:43,411 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2019-10-13 23:15:43,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2019-10-13 23:15:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-13 23:15:43,418 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:43,418 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] [2019-10-13 23:15:43,418 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:43,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:43,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1914137400, now seen corresponding path program 1 times [2019-10-13 23:15:43,420 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:43,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343213218] [2019-10-13 23:15:43,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:43,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:43,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:43,627 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 23:15:43,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343213218] [2019-10-13 23:15:43,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:43,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:15:43,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965880571] [2019-10-13 23:15:43,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:15:43,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:43,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:15:43,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:15:43,630 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand 7 states. [2019-10-13 23:15:44,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:44,077 INFO L93 Difference]: Finished difference Result 355 states and 423 transitions. [2019-10-13 23:15:44,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:15:44,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2019-10-13 23:15:44,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:44,085 INFO L225 Difference]: With dead ends: 355 [2019-10-13 23:15:44,086 INFO L226 Difference]: Without dead ends: 260 [2019-10-13 23:15:44,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:15:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2019-10-13 23:15:44,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 252. [2019-10-13 23:15:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-10-13 23:15:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 300 transitions. [2019-10-13 23:15:44,158 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 300 transitions. Word has length 50 [2019-10-13 23:15:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:44,159 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 300 transitions. [2019-10-13 23:15:44,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:15:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 300 transitions. [2019-10-13 23:15:44,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 23:15:44,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:44,166 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] [2019-10-13 23:15:44,166 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1762879004, now seen corresponding path program 1 times [2019-10-13 23:15:44,167 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:44,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180419051] [2019-10-13 23:15:44,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:44,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:44,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:44,304 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 23:15:44,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180419051] [2019-10-13 23:15:44,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:44,305 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:15:44,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887228732] [2019-10-13 23:15:44,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:15:44,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:44,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:15:44,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:15:44,309 INFO L87 Difference]: Start difference. First operand 252 states and 300 transitions. Second operand 6 states. [2019-10-13 23:15:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:44,536 INFO L93 Difference]: Finished difference Result 688 states and 837 transitions. [2019-10-13 23:15:44,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:15:44,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-13 23:15:44,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:44,542 INFO L225 Difference]: With dead ends: 688 [2019-10-13 23:15:44,542 INFO L226 Difference]: Without dead ends: 461 [2019-10-13 23:15:44,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:15:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-13 23:15:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 449. [2019-10-13 23:15:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-13 23:15:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 537 transitions. [2019-10-13 23:15:44,640 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 537 transitions. Word has length 55 [2019-10-13 23:15:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:44,641 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 537 transitions. [2019-10-13 23:15:44,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:15:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 537 transitions. [2019-10-13 23:15:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 23:15:44,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:44,644 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] [2019-10-13 23:15:44,644 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1307041602, now seen corresponding path program 1 times [2019-10-13 23:15:44,645 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:44,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775527718] [2019-10-13 23:15:44,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:44,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:44,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:44,776 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 23:15:44,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775527718] [2019-10-13 23:15:44,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:44,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:15:44,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963013047] [2019-10-13 23:15:44,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:15:44,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:44,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:15:44,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:15:44,781 INFO L87 Difference]: Start difference. First operand 449 states and 537 transitions. Second operand 7 states. [2019-10-13 23:15:45,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:45,386 INFO L93 Difference]: Finished difference Result 1167 states and 1516 transitions. [2019-10-13 23:15:45,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:15:45,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-13 23:15:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:45,396 INFO L225 Difference]: With dead ends: 1167 [2019-10-13 23:15:45,396 INFO L226 Difference]: Without dead ends: 743 [2019-10-13 23:15:45,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:15:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2019-10-13 23:15:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 656. [2019-10-13 23:15:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-10-13 23:15:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 784 transitions. [2019-10-13 23:15:45,500 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 784 transitions. Word has length 58 [2019-10-13 23:15:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:45,501 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 784 transitions. [2019-10-13 23:15:45,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:15:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 784 transitions. [2019-10-13 23:15:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 23:15:45,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:45,504 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:15:45,504 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:45,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:45,505 INFO L82 PathProgramCache]: Analyzing trace with hash 604340709, now seen corresponding path program 1 times [2019-10-13 23:15:45,505 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:45,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034999764] [2019-10-13 23:15:45,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:45,507 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:45,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:45,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:15:45,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034999764] [2019-10-13 23:15:45,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392579282] [2019-10-13 23:15:45,687 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 23:15:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:45,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 23:15:45,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:15:45,936 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:15:46,066 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:15:46,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-13 23:15:46,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300256176] [2019-10-13 23:15:46,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:46,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:46,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:46,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:15:46,069 INFO L87 Difference]: Start difference. First operand 656 states and 784 transitions. Second operand 3 states. [2019-10-13 23:15:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:46,135 INFO L93 Difference]: Finished difference Result 930 states and 1137 transitions. [2019-10-13 23:15:46,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:46,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-13 23:15:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:46,141 INFO L225 Difference]: With dead ends: 930 [2019-10-13 23:15:46,142 INFO L226 Difference]: Without dead ends: 927 [2019-10-13 23:15:46,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:15:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2019-10-13 23:15:46,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 899. [2019-10-13 23:15:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-13 23:15:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1100 transitions. [2019-10-13 23:15:46,245 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1100 transitions. Word has length 88 [2019-10-13 23:15:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:46,246 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1100 transitions. [2019-10-13 23:15:46,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:46,246 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1100 transitions. [2019-10-13 23:15:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-13 23:15:46,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:46,250 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:46,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:46,456 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:46,456 INFO L82 PathProgramCache]: Analyzing trace with hash 45988478, now seen corresponding path program 1 times [2019-10-13 23:15:46,456 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:46,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339451490] [2019-10-13 23:15:46,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:46,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:46,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:15:46,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339451490] [2019-10-13 23:15:46,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045914300] [2019-10-13 23:15:46,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:46,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-13 23:15:46,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:15:47,004 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:15:47,780 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:15:47,780 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 12] total 25 [2019-10-13 23:15:47,780 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413841754] [2019-10-13 23:15:47,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:15:47,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:47,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:15:47,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2019-10-13 23:15:47,783 INFO L87 Difference]: Start difference. First operand 899 states and 1100 transitions. Second operand 11 states. [2019-10-13 23:15:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:48,579 INFO L93 Difference]: Finished difference Result 2052 states and 2602 transitions. [2019-10-13 23:15:48,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:15:48,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2019-10-13 23:15:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:48,587 INFO L225 Difference]: With dead ends: 2052 [2019-10-13 23:15:48,587 INFO L226 Difference]: Without dead ends: 1178 [2019-10-13 23:15:48,591 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2019-10-13 23:15:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-10-13 23:15:48,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1154. [2019-10-13 23:15:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2019-10-13 23:15:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1405 transitions. [2019-10-13 23:15:48,658 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1405 transitions. Word has length 140 [2019-10-13 23:15:48,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:48,659 INFO L462 AbstractCegarLoop]: Abstraction has 1154 states and 1405 transitions. [2019-10-13 23:15:48,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:15:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1405 transitions. [2019-10-13 23:15:48,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 23:15:48,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:48,664 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:48,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:48,869 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1417284751, now seen corresponding path program 1 times [2019-10-13 23:15:48,870 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:48,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809659848] [2019-10-13 23:15:48,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:48,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:48,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 23:15:49,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809659848] [2019-10-13 23:15:49,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397997261] [2019-10-13 23:15:49,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:49,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-13 23:15:49,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:49,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:49,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:49,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 23:15:49,785 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:50,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:51,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:51,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:51,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 23:15:51,494 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:15:51,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-13 23:15:51,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149172151] [2019-10-13 23:15:51,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 23:15:51,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:51,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 23:15:51,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 23:15:51,496 INFO L87 Difference]: Start difference. First operand 1154 states and 1405 transitions. Second operand 14 states. [2019-10-13 23:15:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:53,778 INFO L93 Difference]: Finished difference Result 3117 states and 3933 transitions. [2019-10-13 23:15:53,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:15:53,781 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2019-10-13 23:15:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:53,794 INFO L225 Difference]: With dead ends: 3117 [2019-10-13 23:15:53,794 INFO L226 Difference]: Without dead ends: 1988 [2019-10-13 23:15:53,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 349 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-10-13 23:15:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2019-10-13 23:15:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1858. [2019-10-13 23:15:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2019-10-13 23:15:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2280 transitions. [2019-10-13 23:15:53,943 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2280 transitions. Word has length 186 [2019-10-13 23:15:53,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:53,946 INFO L462 AbstractCegarLoop]: Abstraction has 1858 states and 2280 transitions. [2019-10-13 23:15:53,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 23:15:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2280 transitions. [2019-10-13 23:15:53,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 23:15:53,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:53,955 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:15:54,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:54,162 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:54,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:54,162 INFO L82 PathProgramCache]: Analyzing trace with hash 95366147, now seen corresponding path program 1 times [2019-10-13 23:15:54,163 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:54,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495124343] [2019-10-13 23:15:54,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:54,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:54,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-13 23:15:54,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495124343] [2019-10-13 23:15:54,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933761530] [2019-10-13 23:15:54,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:54,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-13 23:15:54,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:54,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:54,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:55,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 23:15:55,179 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:55,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:55,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:55,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:55,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:55,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:55,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,040 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 23:15:56,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [605883256] [2019-10-13 23:15:56,643 INFO L162 IcfgInterpreter]: Started Sifa with 110 locations of interest [2019-10-13 23:15:56,643 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:15:56,650 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:15:56,656 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:15:56,656 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:16:05,768 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:16:07,548 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:16:07,684 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:07,851 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:08,020 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:08,296 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:08,550 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:08,743 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:08,963 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:09,313 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:16:09,466 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:09,652 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:09,790 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:09,943 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:10,072 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:10,080 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:16:10,356 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:16:10,357 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-10-13 23:16:10,495 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:10,610 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:10,771 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,106 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,244 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:11,478 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:11,725 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 550 [2019-10-13 23:16:12,010 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,330 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,667 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:12,796 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:13,015 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:13,214 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:13,333 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:13,551 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:13,668 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:13,982 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:14,294 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:14,409 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:14,544 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:14,676 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:14,989 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:15,149 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:15,258 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:15,377 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:15,602 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:15,711 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:15,831 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:15,937 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:16,043 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:16,172 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:16,312 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:16,427 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:16,584 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:16,806 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:16,930 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:17,053 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:17,248 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:16:17,356 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:16:17,476 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:16:17,602 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 566