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_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:21:41,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:21:41,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:21:41,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:21:41,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:21:41,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:21:41,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:21:41,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:21:41,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:21:41,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:21:41,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:21:41,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:21:41,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:21:41,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:21:41,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:21:41,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:21:41,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:21:41,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:21:41,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:21:41,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:21:41,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:21:41,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:21:41,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:21:41,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:21:41,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:21:41,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:21:41,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:21:41,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:21:41,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:21:41,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:21:41,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:21:41,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:21:41,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:21:41,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:21:41,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:21:41,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:21:41,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:21:41,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:21:41,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:21:41,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:21:41,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:21:41,567 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 [2019-10-15 03:21:41,591 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:21:41,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:21:41,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:21:41,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:21:41,593 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:21:41,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:21:41,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:21:41,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:21:41,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:21:41,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:21:41,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:21:41,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:21:41,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:21:41,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:21:41,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:21:41,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:21:41,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:21:41,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:21:41,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:21:41,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:21:41,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:21:41,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:21:41,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:21:41,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:21:41,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:21:41,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:21:41,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:21:41,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:21:41,599 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 [2019-10-15 03:21:41,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:21:41,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:21:41,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:21:41,911 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:21:41,911 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:21:41,912 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2019-10-15 03:21:41,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcd0a1a4/2d741c733d91425bbbc4a70d56f4bd54/FLAGe46c79210 [2019-10-15 03:21:42,430 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:21:42,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2019-10-15 03:21:42,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcd0a1a4/2d741c733d91425bbbc4a70d56f4bd54/FLAGe46c79210 [2019-10-15 03:21:42,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcd0a1a4/2d741c733d91425bbbc4a70d56f4bd54 [2019-10-15 03:21:42,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:21:42,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:21:42,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:42,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:21:42,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:21:42,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:42" (1/1) ... [2019-10-15 03:21:42,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e419fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:42, skipping insertion in model container [2019-10-15 03:21:42,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:42" (1/1) ... [2019-10-15 03:21:42,824 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:21:42,880 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:21:43,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:43,359 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:21:43,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:43,498 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:21:43,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43 WrapperNode [2019-10-15 03:21:43,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:43,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:21:43,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:21:43,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:21:43,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (1/1) ... [2019-10-15 03:21:43,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:21:43,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:21:43,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:21:43,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:21:43,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (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 [2019-10-15 03:21:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:21:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:21:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:21:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:21:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:21:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:21:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:21:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:21:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:21:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:21:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:21:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:21:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:21:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:21:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:21:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:21:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:21:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:21:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:21:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:21:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:21:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:21:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:21:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:21:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:21:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:21:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:21:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:21:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:21:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:21:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:21:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:21:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:21:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:21:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:21:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:21:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:21:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:21:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:21:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:21:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:21:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:21:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:21:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:21:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:21:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:21:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:21:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:21:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:21:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:21:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:21:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:21:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:21:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:21:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:21:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:21:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:21:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:21:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:21:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:21:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:21:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:21:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:21:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:21:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:21:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:21:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:21:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:21:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:21:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:21:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:21:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:21:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:21:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:21:45,212 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:21:45,213 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:21:45,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:45 BoogieIcfgContainer [2019-10-15 03:21:45,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:21:45,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:21:45,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:21:45,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:21:45,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:21:42" (1/3) ... [2019-10-15 03:21:45,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1867c442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:45, skipping insertion in model container [2019-10-15 03:21:45,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:43" (2/3) ... [2019-10-15 03:21:45,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1867c442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:45, skipping insertion in model container [2019-10-15 03:21:45,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:45" (3/3) ... [2019-10-15 03:21:45,223 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2019-10-15 03:21:45,234 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:21:45,244 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:21:45,258 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:21:45,289 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:21:45,289 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:21:45,289 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:21:45,289 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:21:45,290 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:21:45,290 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:21:45,291 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:21:45,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:21:45,322 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2019-10-15 03:21:45,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:21:45,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:45,336 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] [2019-10-15 03:21:45,339 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash -54697865, now seen corresponding path program 1 times [2019-10-15 03:21:45,355 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:45,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694650119] [2019-10-15 03:21:45,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,356 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:45,666 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694650119] [2019-10-15 03:21:45,667 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:45,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:21:45,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626006142] [2019-10-15 03:21:45,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:21:45,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:45,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:21:45,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:21:45,689 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 2 states. [2019-10-15 03:21:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:45,731 INFO L93 Difference]: Finished difference Result 245 states and 290 transitions. [2019-10-15 03:21:45,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:21:45,733 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:21:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:45,746 INFO L225 Difference]: With dead ends: 245 [2019-10-15 03:21:45,746 INFO L226 Difference]: Without dead ends: 123 [2019-10-15 03:21:45,750 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 [2019-10-15 03:21:45,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-15 03:21:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-10-15 03:21:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-15 03:21:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2019-10-15 03:21:45,806 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 42 [2019-10-15 03:21:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:45,807 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2019-10-15 03:21:45,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:21:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2019-10-15 03:21:45,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:21:45,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:45,811 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] [2019-10-15 03:21:45,811 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1882335780, now seen corresponding path program 1 times [2019-10-15 03:21:45,812 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:45,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102506685] [2019-10-15 03:21:45,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:45,933 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102506685] [2019-10-15 03:21:45,934 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:45,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:21:45,935 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202245546] [2019-10-15 03:21:45,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:21:45,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:45,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:21:45,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:21:45,938 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand 3 states. [2019-10-15 03:21:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:45,980 INFO L93 Difference]: Finished difference Result 199 states and 224 transitions. [2019-10-15 03:21:45,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:21:45,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:21:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:45,986 INFO L225 Difference]: With dead ends: 199 [2019-10-15 03:21:45,986 INFO L226 Difference]: Without dead ends: 115 [2019-10-15 03:21:45,990 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 [2019-10-15 03:21:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-10-15 03:21:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-10-15 03:21:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-10-15 03:21:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2019-10-15 03:21:46,009 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 43 [2019-10-15 03:21:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:46,009 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2019-10-15 03:21:46,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:21:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2019-10-15 03:21:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:21:46,012 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:46,012 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] [2019-10-15 03:21:46,012 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash 829023992, now seen corresponding path program 1 times [2019-10-15 03:21:46,013 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:46,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864903341] [2019-10-15 03:21:46,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,014 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:46,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864903341] [2019-10-15 03:21:46,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:46,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:21:46,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403480468] [2019-10-15 03:21:46,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:46,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:46,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:46,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:21:46,206 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand 7 states. [2019-10-15 03:21:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:46,487 INFO L93 Difference]: Finished difference Result 208 states and 235 transitions. [2019-10-15 03:21:46,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:21:46,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-15 03:21:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:46,490 INFO L225 Difference]: With dead ends: 208 [2019-10-15 03:21:46,490 INFO L226 Difference]: Without dead ends: 115 [2019-10-15 03:21:46,491 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 [2019-10-15 03:21:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2019-10-15 03:21:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2019-10-15 03:21:46,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-10-15 03:21:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2019-10-15 03:21:46,504 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 46 [2019-10-15 03:21:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:46,504 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2019-10-15 03:21:46,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2019-10-15 03:21:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-15 03:21:46,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:46,507 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:46,507 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:46,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:46,507 INFO L82 PathProgramCache]: Analyzing trace with hash 910300140, now seen corresponding path program 1 times [2019-10-15 03:21:46,508 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:46,508 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44160091] [2019-10-15 03:21:46,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,508 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:46,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:46,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44160091] [2019-10-15 03:21:46,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:46,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:21:46,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841053586] [2019-10-15 03:21:46,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:21:46,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:46,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:21:46,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:21:46,612 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand 5 states. [2019-10-15 03:21:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:47,045 INFO L93 Difference]: Finished difference Result 298 states and 346 transitions. [2019-10-15 03:21:47,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:21:47,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-10-15 03:21:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:47,049 INFO L225 Difference]: With dead ends: 298 [2019-10-15 03:21:47,049 INFO L226 Difference]: Without dead ends: 205 [2019-10-15 03:21:47,050 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:21:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-10-15 03:21:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 188. [2019-10-15 03:21:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-10-15 03:21:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 206 transitions. [2019-10-15 03:21:47,103 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 206 transitions. Word has length 59 [2019-10-15 03:21:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:47,104 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 206 transitions. [2019-10-15 03:21:47,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:21:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 206 transitions. [2019-10-15 03:21:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-15 03:21:47,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:47,108 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:47,108 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1863277608, now seen corresponding path program 1 times [2019-10-15 03:21:47,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401709371] [2019-10-15 03:21:47,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:47,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401709371] [2019-10-15 03:21:47,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:47,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:21:47,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590806544] [2019-10-15 03:21:47,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:21:47,273 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:47,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:21:47,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:47,273 INFO L87 Difference]: Start difference. First operand 188 states and 206 transitions. Second operand 10 states. [2019-10-15 03:21:47,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:47,708 INFO L93 Difference]: Finished difference Result 568 states and 651 transitions. [2019-10-15 03:21:47,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:21:47,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2019-10-15 03:21:47,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:47,714 INFO L225 Difference]: With dead ends: 568 [2019-10-15 03:21:47,714 INFO L226 Difference]: Without dead ends: 402 [2019-10-15 03:21:47,715 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 [2019-10-15 03:21:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2019-10-15 03:21:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 388. [2019-10-15 03:21:47,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-10-15 03:21:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 432 transitions. [2019-10-15 03:21:47,750 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 432 transitions. Word has length 68 [2019-10-15 03:21:47,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:47,750 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 432 transitions. [2019-10-15 03:21:47,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:21:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 432 transitions. [2019-10-15 03:21:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-15 03:21:47,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:47,755 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, 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] [2019-10-15 03:21:47,756 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1716243847, now seen corresponding path program 1 times [2019-10-15 03:21:47,756 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896937553] [2019-10-15 03:21:47,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:21:47,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896937553] [2019-10-15 03:21:47,941 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391022748] [2019-10-15 03:21:47,942 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 [2019-10-15 03:21:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:48,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:21:48,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:21:48,211 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 03:21:48,394 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:21:48,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-15 03:21:48,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422123802] [2019-10-15 03:21:48,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:48,396 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:48,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:21:48,396 INFO L87 Difference]: Start difference. First operand 388 states and 432 transitions. Second operand 7 states. [2019-10-15 03:21:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:48,643 INFO L93 Difference]: Finished difference Result 397 states and 441 transitions. [2019-10-15 03:21:48,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:21:48,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2019-10-15 03:21:48,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:48,651 INFO L225 Difference]: With dead ends: 397 [2019-10-15 03:21:48,651 INFO L226 Difference]: Without dead ends: 394 [2019-10-15 03:21:48,652 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:21:48,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2019-10-15 03:21:48,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2019-10-15 03:21:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-10-15 03:21:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 431 transitions. [2019-10-15 03:21:48,752 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 431 transitions. Word has length 117 [2019-10-15 03:21:48,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:48,755 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 431 transitions. [2019-10-15 03:21:48,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 431 transitions. [2019-10-15 03:21:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 03:21:48,761 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:48,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:48,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:48,964 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:48,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:48,964 INFO L82 PathProgramCache]: Analyzing trace with hash -506282775, now seen corresponding path program 1 times [2019-10-15 03:21:48,965 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:48,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795360941] [2019-10-15 03:21:48,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:21:49,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795360941] [2019-10-15 03:21:49,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928390783] [2019-10-15 03:21:49,205 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 [2019-10-15 03:21:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:49,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-15 03:21:49,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:49,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:49,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:21:49,752 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:50,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:21:50,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091374587] [2019-10-15 03:21:50,874 INFO L162 IcfgInterpreter]: Started Sifa with 105 locations of interest [2019-10-15 03:21:50,874 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:21:50,880 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:21:50,890 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:21:50,890 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:21:59,975 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:22:01,593 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:22:01,723 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:01,868 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:02,037 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:02,251 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:02,475 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:02,743 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:02,945 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:03,325 WARN L191 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:22:03,571 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:03,753 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:03,891 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:04,042 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:04,183 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:04,193 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:22:04,501 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-15 03:22:04,502 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:22:04,684 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:04,816 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:04,987 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,108 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:05,219 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:05,359 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,596 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:05,784 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:05,917 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:06,132 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 546 [2019-10-15 03:22:06,242 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:06,410 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:06,733 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:06,834 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:06,962 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:07,077 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:07,185 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:07,288 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:07,409 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:07,612 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:07,766 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:07,872 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:08,089 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:08,414 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:08,528 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:08,743 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,058 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,162 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:09,300 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:22:09,416 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,545 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,652 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,771 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,974 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:10,081 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,219 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,327 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,436 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,555 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,712 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,824 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,944 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,070 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,199 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,324 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,434 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,544 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,662 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,775 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:11,887 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:12,008 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:12,122 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:12,231 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:12,353 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:12,482 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:12,590 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:12,711 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:12,908 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 564 DAG size of output: 560 [2019-10-15 03:22:13,019 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:13,291 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:13,485 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:13,595 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:13,714 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:13,924 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:14,032 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,163 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,389 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:14,499 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,617 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,724 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,843 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,957 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:15,081 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,191 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,314 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,453 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,564 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,691 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,800 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,912 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:16,029 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:16,494 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-15 03:22:16,647 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:16,768 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:16,969 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-15 03:22:17,079 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:17,200 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:17,421 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:17,529 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,646 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,840 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:17,960 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,085 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,191 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,299 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,413 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,865 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:19,156 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:19,476 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:19,875 WARN L191 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:19,983 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:20,102 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:20,208 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:20,315 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:20,473 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:20,680 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:20,788 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:20,926 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:21,141 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-15 03:22:21,250 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:21,369 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:21,566 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:21,673 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:21,791 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:21,985 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-15 03:22:22,094 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:22,216 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:22,414 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:22,522 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,638 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,830 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:22,938 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:23,055 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:23,162 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556