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_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:16:54,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:16:54,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:16:54,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:16:54,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:16:54,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:16:54,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:16:54,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:16:54,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:16:54,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:16:54,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:16:54,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:16:54,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:16:54,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:16:54,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:16:54,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:16:54,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:16:54,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:16:54,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:16:54,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:16:54,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:16:54,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:16:54,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:16:54,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:16:54,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:16:54,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:16:54,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:16:54,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:16:54,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:16:54,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:16:54,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:16:54,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:16:54,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:16:54,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:16:54,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:16:54,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:16:54,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:16:54,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:16:54,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:16:54,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:16:54,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:16:54,604 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 23:16:54,637 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:16:54,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:16:54,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:16:54,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:16:54,642 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:16:54,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:16:54,642 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:16:54,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:16:54,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:16:54,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:16:54,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:16:54,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:16:54,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:16:54,646 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:16:54,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:16:54,646 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:16:54,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:16:54,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:16:54,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:16:54,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:16:54,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:16:54,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:16:54,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:16:54,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:16:54,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:16:54,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:16:54,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:16:54,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:16:54,652 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 23:16:54,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:16:54,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:16:54,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:16:54,998 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:16:54,999 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:16:54,999 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-13 23:16:55,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50a45c9c/749159413adc48b5a7271d50016fb182/FLAG34b9e9efb [2019-10-13 23:16:55,659 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:16:55,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-13 23:16:55,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50a45c9c/749159413adc48b5a7271d50016fb182/FLAG34b9e9efb [2019-10-13 23:16:55,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50a45c9c/749159413adc48b5a7271d50016fb182 [2019-10-13 23:16:55,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:16:55,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:16:55,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:16:55,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:16:55,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:16:55,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:55" (1/1) ... [2019-10-13 23:16:55,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f417be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:55, skipping insertion in model container [2019-10-13 23:16:55,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:55" (1/1) ... [2019-10-13 23:16:55,921 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:16:55,976 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:16:56,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:16:56,501 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:16:56,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:16:56,627 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:16:56,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56 WrapperNode [2019-10-13 23:16:56,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:16:56,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:16:56,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:16:56,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:16:56,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (1/1) ... [2019-10-13 23:16:56,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:16:56,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:16:56,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:16:56,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:16:56,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (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 23:16:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:16:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:16:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:16:56,780 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:16:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:16:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:16:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:16:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:16:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 23:16:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:16:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:16:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:16:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:16:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:16:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:16:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:16:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:16:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:16:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:16:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:16:56,783 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:16:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:16:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:16:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:16:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:16:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:16:56,784 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:16:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:16:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:16:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:16:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:16:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:16:56,785 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:16:56,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:16:56,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:16:56,787 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:16:56,788 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:16:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 23:16:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:16:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:16:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:16:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:16:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:16:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:16:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:16:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:16:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:16:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:16:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:16:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:16:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:16:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:16:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:16:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:16:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:16:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:16:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:16:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:16:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:16:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:16:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:16:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:16:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:16:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:16:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:16:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:16:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:16:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:16:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:16:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:16:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:16:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:16:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:16:58,483 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:16:58,483 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:16:58,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:58 BoogieIcfgContainer [2019-10-13 23:16:58,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:16:58,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:16:58,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:16:58,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:16:58,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:16:55" (1/3) ... [2019-10-13 23:16:58,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f196112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:58, skipping insertion in model container [2019-10-13 23:16:58,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:56" (2/3) ... [2019-10-13 23:16:58,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f196112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:58, skipping insertion in model container [2019-10-13 23:16:58,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:58" (3/3) ... [2019-10-13 23:16:58,493 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2019-10-13 23:16:58,503 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:16:58,513 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:16:58,525 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:16:58,553 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:16:58,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:16:58,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:16:58,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:16:58,554 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:16:58,554 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:16:58,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:16:58,554 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:16:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2019-10-13 23:16:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:16:58,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:58,594 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] [2019-10-13 23:16:58,596 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:58,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:58,604 INFO L82 PathProgramCache]: Analyzing trace with hash 659053163, now seen corresponding path program 1 times [2019-10-13 23:16:58,615 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:58,616 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476745056] [2019-10-13 23:16:58,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:58,616 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:58,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:58,996 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 23:16:58,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476745056] [2019-10-13 23:16:58,998 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:59,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:16:59,002 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20251337] [2019-10-13 23:16:59,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:16:59,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:59,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:16:59,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:16:59,027 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 2 states. [2019-10-13 23:16:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:59,069 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-10-13 23:16:59,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:16:59,071 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-13 23:16:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:59,084 INFO L225 Difference]: With dead ends: 225 [2019-10-13 23:16:59,085 INFO L226 Difference]: Without dead ends: 113 [2019-10-13 23:16:59,090 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 23:16:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-13 23:16:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-10-13 23:16:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-13 23:16:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2019-10-13 23:16:59,147 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 42 [2019-10-13 23:16:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:59,148 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2019-10-13 23:16:59,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:16:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2019-10-13 23:16:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 23:16:59,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:59,152 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] [2019-10-13 23:16:59,152 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash -690893461, now seen corresponding path program 1 times [2019-10-13 23:16:59,153 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:59,153 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245797139] [2019-10-13 23:16:59,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:59,323 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 23:16:59,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245797139] [2019-10-13 23:16:59,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:59,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:16:59,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391215314] [2019-10-13 23:16:59,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:16:59,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:59,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:16:59,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:16:59,328 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 3 states. [2019-10-13 23:16:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:16:59,364 INFO L93 Difference]: Finished difference Result 176 states and 202 transitions. [2019-10-13 23:16:59,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:16:59,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-13 23:16:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:16:59,367 INFO L225 Difference]: With dead ends: 176 [2019-10-13 23:16:59,368 INFO L226 Difference]: Without dead ends: 105 [2019-10-13 23:16:59,369 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 23:16:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-10-13 23:16:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-10-13 23:16:59,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-13 23:16:59,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2019-10-13 23:16:59,385 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 43 [2019-10-13 23:16:59,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:16:59,386 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2019-10-13 23:16:59,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:16:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2019-10-13 23:16:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 23:16:59,388 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:16:59,389 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 23:16:59,389 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:16:59,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:16:59,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1392605010, now seen corresponding path program 1 times [2019-10-13 23:16:59,390 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:16:59,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487093613] [2019-10-13 23:16:59,390 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:16:59,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:16:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:16:59,582 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 23:16:59,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487093613] [2019-10-13 23:16:59,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:16:59,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:16:59,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125600431] [2019-10-13 23:16:59,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:16:59,612 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:16:59,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:16:59,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:16:59,614 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2019-10-13 23:17:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:00,067 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2019-10-13 23:17:00,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:17:00,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-13 23:17:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:00,072 INFO L225 Difference]: With dead ends: 315 [2019-10-13 23:17:00,073 INFO L226 Difference]: Without dead ends: 232 [2019-10-13 23:17:00,074 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 23:17:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2019-10-13 23:17:00,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2019-10-13 23:17:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-10-13 23:17:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 265 transitions. [2019-10-13 23:17:00,136 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 265 transitions. Word has length 46 [2019-10-13 23:17:00,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:00,137 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 265 transitions. [2019-10-13 23:17:00,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:17:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 265 transitions. [2019-10-13 23:17:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 23:17:00,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:00,145 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] [2019-10-13 23:17:00,146 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:00,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:00,146 INFO L82 PathProgramCache]: Analyzing trace with hash -444831069, now seen corresponding path program 1 times [2019-10-13 23:17:00,146 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:00,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342796716] [2019-10-13 23:17:00,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:00,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:00,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:00,367 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 23:17:00,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342796716] [2019-10-13 23:17:00,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:17:00,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 23:17:00,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959643669] [2019-10-13 23:17:00,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 23:17:00,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:00,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 23:17:00,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:17:00,370 INFO L87 Difference]: Start difference. First operand 224 states and 265 transitions. Second operand 10 states. [2019-10-13 23:17:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:01,168 INFO L93 Difference]: Finished difference Result 791 states and 982 transitions. [2019-10-13 23:17:01,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:17:01,168 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-10-13 23:17:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:01,175 INFO L225 Difference]: With dead ends: 791 [2019-10-13 23:17:01,175 INFO L226 Difference]: Without dead ends: 589 [2019-10-13 23:17:01,178 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:17:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-13 23:17:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 565. [2019-10-13 23:17:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2019-10-13 23:17:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 686 transitions. [2019-10-13 23:17:01,237 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 686 transitions. Word has length 51 [2019-10-13 23:17:01,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:01,238 INFO L462 AbstractCegarLoop]: Abstraction has 565 states and 686 transitions. [2019-10-13 23:17:01,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 23:17:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 686 transitions. [2019-10-13 23:17:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 23:17:01,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:01,242 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 23:17:01,243 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash -521026913, now seen corresponding path program 1 times [2019-10-13 23:17:01,244 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:01,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265075054] [2019-10-13 23:17:01,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:01,244 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:01,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:01,365 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 23:17:01,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265075054] [2019-10-13 23:17:01,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:17:01,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:17:01,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959777049] [2019-10-13 23:17:01,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:17:01,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:01,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:17:01,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:17:01,368 INFO L87 Difference]: Start difference. First operand 565 states and 686 transitions. Second operand 4 states. [2019-10-13 23:17:01,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:01,688 INFO L93 Difference]: Finished difference Result 1404 states and 1872 transitions. [2019-10-13 23:17:01,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:17:01,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2019-10-13 23:17:01,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:01,694 INFO L225 Difference]: With dead ends: 1404 [2019-10-13 23:17:01,694 INFO L226 Difference]: Without dead ends: 861 [2019-10-13 23:17:01,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:17:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2019-10-13 23:17:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 731. [2019-10-13 23:17:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-10-13 23:17:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 878 transitions. [2019-10-13 23:17:01,754 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 878 transitions. Word has length 57 [2019-10-13 23:17:01,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:01,755 INFO L462 AbstractCegarLoop]: Abstraction has 731 states and 878 transitions. [2019-10-13 23:17:01,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:17:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 878 transitions. [2019-10-13 23:17:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-13 23:17:01,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:01,758 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 23:17:01,758 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:01,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1222446110, now seen corresponding path program 1 times [2019-10-13 23:17:01,759 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:01,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271006735] [2019-10-13 23:17:01,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:01,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:01,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:17:01,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271006735] [2019-10-13 23:17:01,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716101420] [2019-10-13 23:17:01,882 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 23:17:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:02,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 23:17:02,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:17:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:17:02,140 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:17:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:17:02,238 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:17:02,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-13 23:17:02,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203252556] [2019-10-13 23:17:02,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:17:02,239 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:02,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:17:02,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:17:02,240 INFO L87 Difference]: Start difference. First operand 731 states and 878 transitions. Second operand 7 states. [2019-10-13 23:17:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:02,464 INFO L93 Difference]: Finished difference Result 744 states and 894 transitions. [2019-10-13 23:17:02,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:17:02,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-13 23:17:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:02,473 INFO L225 Difference]: With dead ends: 744 [2019-10-13 23:17:02,473 INFO L226 Difference]: Without dead ends: 741 [2019-10-13 23:17:02,474 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:17:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2019-10-13 23:17:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 731. [2019-10-13 23:17:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-10-13 23:17:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 875 transitions. [2019-10-13 23:17:02,535 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 875 transitions. Word has length 78 [2019-10-13 23:17:02,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:02,536 INFO L462 AbstractCegarLoop]: Abstraction has 731 states and 875 transitions. [2019-10-13 23:17:02,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:17:02,537 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 875 transitions. [2019-10-13 23:17:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:17:02,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:02,542 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:02,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:17:02,747 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1068146620, now seen corresponding path program 1 times [2019-10-13 23:17:02,748 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:02,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374548262] [2019-10-13 23:17:02,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:02,749 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:02,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 23:17:02,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374548262] [2019-10-13 23:17:02,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:17:02,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:17:02,895 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380936876] [2019-10-13 23:17:02,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:17:02,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:02,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:17:02,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:17:02,896 INFO L87 Difference]: Start difference. First operand 731 states and 875 transitions. Second operand 4 states. [2019-10-13 23:17:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:03,077 INFO L93 Difference]: Finished difference Result 857 states and 1028 transitions. [2019-10-13 23:17:03,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 23:17:03,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-10-13 23:17:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:03,086 INFO L225 Difference]: With dead ends: 857 [2019-10-13 23:17:03,086 INFO L226 Difference]: Without dead ends: 318 [2019-10-13 23:17:03,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:17:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-10-13 23:17:03,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2019-10-13 23:17:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-13 23:17:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 367 transitions. [2019-10-13 23:17:03,111 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 367 transitions. Word has length 122 [2019-10-13 23:17:03,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:03,120 INFO L462 AbstractCegarLoop]: Abstraction has 318 states and 367 transitions. [2019-10-13 23:17:03,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:17:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 367 transitions. [2019-10-13 23:17:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:17:03,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:03,125 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:03,125 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:03,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2092836145, now seen corresponding path program 1 times [2019-10-13 23:17:03,126 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:03,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677864232] [2019-10-13 23:17:03,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:03,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:03,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 23:17:03,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677864232] [2019-10-13 23:17:03,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:17:03,423 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 23:17:03,423 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040355813] [2019-10-13 23:17:03,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 23:17:03,424 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:17:03,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 23:17:03,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:17:03,425 INFO L87 Difference]: Start difference. First operand 318 states and 367 transitions. Second operand 14 states. [2019-10-13 23:17:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:17:03,823 INFO L93 Difference]: Finished difference Result 587 states and 705 transitions. [2019-10-13 23:17:03,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 23:17:03,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 117 [2019-10-13 23:17:03,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:17:03,827 INFO L225 Difference]: With dead ends: 587 [2019-10-13 23:17:03,827 INFO L226 Difference]: Without dead ends: 453 [2019-10-13 23:17:03,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:17:03,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-13 23:17:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 386. [2019-10-13 23:17:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2019-10-13 23:17:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 450 transitions. [2019-10-13 23:17:03,871 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 450 transitions. Word has length 117 [2019-10-13 23:17:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:17:03,872 INFO L462 AbstractCegarLoop]: Abstraction has 386 states and 450 transitions. [2019-10-13 23:17:03,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 23:17:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 450 transitions. [2019-10-13 23:17:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:17:03,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:17:03,875 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:03,876 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:17:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:17:03,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1231208487, now seen corresponding path program 1 times [2019-10-13 23:17:03,876 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:17:03,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917026731] [2019-10-13 23:17:03,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:03,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:17:03,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:17:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 23:17:04,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917026731] [2019-10-13 23:17:04,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708172345] [2019-10-13 23:17:04,199 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 23:17:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:17:04,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-13 23:17:04,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:17:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 23:17:04,616 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:17:04,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,522 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:17:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:17:05,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164239320] [2019-10-13 23:17:05,801 INFO L162 IcfgInterpreter]: Started Sifa with 92 locations of interest [2019-10-13 23:17:05,802 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:17:05,810 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:17:05,816 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:17:05,817 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:17:15,882 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-13 23:17:17,660 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:17:17,800 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:17:17,928 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:17:18,042 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-13 23:17:18,276 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:18,509 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:18,679 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:18,882 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:19,148 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-13 23:17:19,325 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:19,451 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:19,577 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:19,808 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-13 23:17:19,817 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-13 23:17:20,052 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:17:20,166 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:17:20,294 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:17:20,428 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:20,757 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:20,907 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:17:21,124 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:21,432 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 546 [2019-10-13 23:17:21,660 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:21,771 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:17:22,008 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:22,334 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:22,660 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:22,972 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:23,176 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:17:23,317 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:23,615 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:23,926 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:24,232 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:24,428 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:17:24,567 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:24,702 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:24,806 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:24,947 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:25,148 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:25,250 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:25,377 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:25,498 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:25,604 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:25,715 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:25,892 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:25,998 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:26,121 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:26,365 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:17:26,470 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:26,588 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:26,783 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:17:26,888 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:27,004 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:27,114 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:27,222 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:27,359 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:27,467 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:27,575 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:27,696 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:27,847 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:27,957 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:28,087 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:28,292 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-13 23:17:28,399 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:28,525 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:28,637 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:28,745 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:28,862 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:29,069 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:29,173 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,351 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,551 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:29,656 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,772 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,875 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:29,980 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:30,092 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:30,387 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:17:30,510 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:30,631 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:30,854 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:17:30,960 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:31,084 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:31,190 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:31,296 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:31,430 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:31,629 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 565 [2019-10-13 23:17:31,737 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:31,856 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:17:32,050 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-13 23:17:32,159 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:32,282 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-13 23:17:32,508 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:32,613 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:32,728 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:32,917 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:33,021 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:33,140 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:33,249 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:33,354 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:33,467 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:33,669 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:33,773 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:33,887 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:34,331 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-13 23:17:34,515 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:34,631 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:34,735 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:34,841 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:34,991 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-13 23:17:35,209 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:17:35,316 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:35,448 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:35,643 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:17:35,750 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:17:35,867 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 560