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_spec5_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:18:07,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:18:07,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:18:07,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:18:07,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:18:07,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:18:07,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:18:07,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:18:07,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:18:07,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:18:07,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:18:07,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:18:07,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:18:07,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:18:07,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:18:07,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:18:07,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:18:07,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:18:07,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:18:07,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:18:07,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:18:07,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:18:07,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:18:07,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:18:07,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:18:07,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:18:07,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:18:07,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:18:07,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:18:07,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:18:07,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:18:07,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:18:07,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:18:07,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:18:07,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:18:07,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:18:07,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:18:07,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:18:07,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:18:07,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:18:07,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:18:07,447 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 23:18:07,466 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:18:07,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:18:07,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:18:07,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:18:07,469 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:18:07,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:18:07,469 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:18:07,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:18:07,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:18:07,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:18:07,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:18:07,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:18:07,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:18:07,472 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:18:07,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:18:07,472 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:18:07,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:18:07,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:18:07,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:18:07,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:18:07,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:18:07,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:07,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:18:07,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:18:07,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:18:07,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:18:07,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:18:07,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:18:07,475 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 23:18:07,786 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:18:07,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:18:07,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:18:07,812 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:18:07,812 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:18:07,813 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product41.cil.c [2019-10-13 23:18:07,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6955c7945/b34c969ab547448f9789c640508bd912/FLAG09c0aff00 [2019-10-13 23:18:08,466 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:18:08,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product41.cil.c [2019-10-13 23:18:08,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6955c7945/b34c969ab547448f9789c640508bd912/FLAG09c0aff00 [2019-10-13 23:18:08,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6955c7945/b34c969ab547448f9789c640508bd912 [2019-10-13 23:18:08,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:18:08,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:18:08,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:08,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:18:08,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:18:08,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:08" (1/1) ... [2019-10-13 23:18:08,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bbc4866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:08, skipping insertion in model container [2019-10-13 23:18:08,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:08" (1/1) ... [2019-10-13 23:18:08,800 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:18:08,844 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:18:09,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:09,412 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:18:09,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:09,606 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:18:09,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09 WrapperNode [2019-10-13 23:18:09,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:09,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:18:09,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:18:09,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:18:09,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (1/1) ... [2019-10-13 23:18:09,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (1/1) ... [2019-10-13 23:18:09,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (1/1) ... [2019-10-13 23:18:09,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (1/1) ... [2019-10-13 23:18:09,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (1/1) ... [2019-10-13 23:18:09,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (1/1) ... [2019-10-13 23:18:09,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (1/1) ... [2019-10-13 23:18:09,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:18:09,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:18:09,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:18:09,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:18:09,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (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 23:18:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:18:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:18:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:18:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:18:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:18:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:18:09,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:18:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:18:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:18:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:18:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:18:09,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:18:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:18:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:18:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:18:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:18:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:18:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 23:18:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:18:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:18:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:18:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:18:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:18:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:18:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:18:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:09,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:18:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:18:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:18:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:18:09,805 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:18:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:18:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:18:09,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:18:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:18:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:18:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:18:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:18:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:18:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:18:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:18:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:18:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:18:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:18:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:18:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:18:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:18:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:18:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:18:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:18:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:18:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:18:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:18:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:18:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:18:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:18:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:18:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:18:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:18:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:18:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:18:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:18:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:18:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 23:18:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:18:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:18:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:18:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:18:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:18:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:18:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:18:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:18:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:18:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:18:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:18:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:18:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:18:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:18:09,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:18:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:18:09,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:18:11,418 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:18:11,418 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:18:11,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:11 BoogieIcfgContainer [2019-10-13 23:18:11,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:18:11,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:18:11,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:18:11,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:18:11,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:08" (1/3) ... [2019-10-13 23:18:11,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4d37fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:11, skipping insertion in model container [2019-10-13 23:18:11,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:09" (2/3) ... [2019-10-13 23:18:11,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4d37fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:11, skipping insertion in model container [2019-10-13 23:18:11,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:11" (3/3) ... [2019-10-13 23:18:11,428 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product41.cil.c [2019-10-13 23:18:11,439 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:18:11,449 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:18:11,462 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:18:11,500 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:18:11,500 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:18:11,500 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:18:11,500 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:18:11,501 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:18:11,501 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:18:11,501 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:18:11,501 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:18:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2019-10-13 23:18:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:18:11,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:11,552 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:11,555 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:11,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1969296123, now seen corresponding path program 1 times [2019-10-13 23:18:11,578 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:11,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423686580] [2019-10-13 23:18:11,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:11,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:11,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:11,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423686580] [2019-10-13 23:18:11,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:11,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:18:11,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867954775] [2019-10-13 23:18:11,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:18:11,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:11,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:18:11,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:11,998 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 2 states. [2019-10-13 23:18:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:12,039 INFO L93 Difference]: Finished difference Result 214 states and 255 transitions. [2019-10-13 23:18:12,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:18:12,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:18:12,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:12,054 INFO L225 Difference]: With dead ends: 214 [2019-10-13 23:18:12,054 INFO L226 Difference]: Without dead ends: 109 [2019-10-13 23:18:12,058 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 23:18:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-13 23:18:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-13 23:18:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-13 23:18:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2019-10-13 23:18:12,116 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 52 [2019-10-13 23:18:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:12,117 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2019-10-13 23:18:12,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:18:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2019-10-13 23:18:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:18:12,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:12,122 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:12,125 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:12,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:12,126 INFO L82 PathProgramCache]: Analyzing trace with hash -377744323, now seen corresponding path program 1 times [2019-10-13 23:18:12,126 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:12,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612025938] [2019-10-13 23:18:12,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:12,127 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:12,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:12,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612025938] [2019-10-13 23:18:12,252 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:12,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:18:12,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172939522] [2019-10-13 23:18:12,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:18:12,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:12,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:18:12,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:12,256 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand 3 states. [2019-10-13 23:18:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:12,288 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2019-10-13 23:18:12,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:18:12,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:18:12,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:12,291 INFO L225 Difference]: With dead ends: 172 [2019-10-13 23:18:12,292 INFO L226 Difference]: Without dead ends: 101 [2019-10-13 23:18:12,293 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 23:18:12,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-10-13 23:18:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2019-10-13 23:18:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-10-13 23:18:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2019-10-13 23:18:12,310 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 53 [2019-10-13 23:18:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:12,313 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2019-10-13 23:18:12,313 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:18:12,313 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2019-10-13 23:18:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 23:18:12,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:12,320 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:12,321 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:12,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1271642857, now seen corresponding path program 1 times [2019-10-13 23:18:12,322 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:12,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211893142] [2019-10-13 23:18:12,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:12,323 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:12,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:12,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211893142] [2019-10-13 23:18:12,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:12,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:12,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288825694] [2019-10-13 23:18:12,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:12,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:12,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:12,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:12,523 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 7 states. [2019-10-13 23:18:12,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:12,863 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2019-10-13 23:18:12,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:18:12,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-10-13 23:18:12,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:12,866 INFO L225 Difference]: With dead ends: 177 [2019-10-13 23:18:12,866 INFO L226 Difference]: Without dead ends: 101 [2019-10-13 23:18:12,867 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 23:18:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-10-13 23:18:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2019-10-13 23:18:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-10-13 23:18:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2019-10-13 23:18:12,879 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 55 [2019-10-13 23:18:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:12,882 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2019-10-13 23:18:12,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2019-10-13 23:18:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-13 23:18:12,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:12,884 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:12,884 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash -935672368, now seen corresponding path program 1 times [2019-10-13 23:18:12,885 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:12,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147898002] [2019-10-13 23:18:12,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:12,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:12,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:13,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147898002] [2019-10-13 23:18:13,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:13,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:18:13,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630735295] [2019-10-13 23:18:13,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:18:13,026 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:13,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:18:13,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:18:13,027 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 5 states. [2019-10-13 23:18:13,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:13,474 INFO L93 Difference]: Finished difference Result 256 states and 297 transitions. [2019-10-13 23:18:13,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:18:13,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2019-10-13 23:18:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:13,481 INFO L225 Difference]: With dead ends: 256 [2019-10-13 23:18:13,481 INFO L226 Difference]: Without dead ends: 180 [2019-10-13 23:18:13,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-10-13 23:18:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2019-10-13 23:18:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-13 23:18:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2019-10-13 23:18:13,518 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 63 [2019-10-13 23:18:13,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:13,519 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2019-10-13 23:18:13,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:18:13,519 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2019-10-13 23:18:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 23:18:13,521 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:13,521 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:13,521 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:13,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:13,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1110657955, now seen corresponding path program 1 times [2019-10-13 23:18:13,522 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:13,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166815989] [2019-10-13 23:18:13,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:13,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:13,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:18:13,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166815989] [2019-10-13 23:18:13,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:13,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:13,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936810177] [2019-10-13 23:18:13,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:13,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:13,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:13,679 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand 7 states. [2019-10-13 23:18:14,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:14,195 INFO L93 Difference]: Finished difference Result 319 states and 366 transitions. [2019-10-13 23:18:14,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:18:14,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2019-10-13 23:18:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:14,198 INFO L225 Difference]: With dead ends: 319 [2019-10-13 23:18:14,199 INFO L226 Difference]: Without dead ends: 179 [2019-10-13 23:18:14,200 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:18:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-10-13 23:18:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 164. [2019-10-13 23:18:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-10-13 23:18:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2019-10-13 23:18:14,222 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 72 [2019-10-13 23:18:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:14,223 INFO L462 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2019-10-13 23:18:14,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2019-10-13 23:18:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 23:18:14,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:14,224 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:14,225 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:14,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1250411196, now seen corresponding path program 1 times [2019-10-13 23:18:14,225 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:14,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075199721] [2019-10-13 23:18:14,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:14,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:14,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:14,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075199721] [2019-10-13 23:18:14,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:14,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:18:14,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516719603] [2019-10-13 23:18:14,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:18:14,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:14,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:18:14,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:18:14,464 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand 12 states. [2019-10-13 23:18:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:15,400 INFO L93 Difference]: Finished difference Result 430 states and 491 transitions. [2019-10-13 23:18:15,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:18:15,401 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2019-10-13 23:18:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:15,405 INFO L225 Difference]: With dead ends: 430 [2019-10-13 23:18:15,405 INFO L226 Difference]: Without dead ends: 291 [2019-10-13 23:18:15,406 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:15,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-10-13 23:18:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 282. [2019-10-13 23:18:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2019-10-13 23:18:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 319 transitions. [2019-10-13 23:18:15,454 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 319 transitions. Word has length 85 [2019-10-13 23:18:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:15,455 INFO L462 AbstractCegarLoop]: Abstraction has 282 states and 319 transitions. [2019-10-13 23:18:15,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:18:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 319 transitions. [2019-10-13 23:18:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 23:18:15,457 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:15,457 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:15,457 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:15,458 INFO L82 PathProgramCache]: Analyzing trace with hash 45315582, now seen corresponding path program 1 times [2019-10-13 23:18:15,458 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:15,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155675329] [2019-10-13 23:18:15,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:15,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:15,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:15,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155675329] [2019-10-13 23:18:15,690 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:15,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:18:15,691 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760644759] [2019-10-13 23:18:15,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:18:15,692 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:15,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:18:15,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:18:15,692 INFO L87 Difference]: Start difference. First operand 282 states and 319 transitions. Second operand 9 states. [2019-10-13 23:18:16,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:16,592 INFO L93 Difference]: Finished difference Result 872 states and 1015 transitions. [2019-10-13 23:18:16,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:18:16,592 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2019-10-13 23:18:16,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:16,598 INFO L225 Difference]: With dead ends: 872 [2019-10-13 23:18:16,598 INFO L226 Difference]: Without dead ends: 667 [2019-10-13 23:18:16,599 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:16,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2019-10-13 23:18:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 575. [2019-10-13 23:18:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2019-10-13 23:18:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 656 transitions. [2019-10-13 23:18:16,646 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 656 transitions. Word has length 88 [2019-10-13 23:18:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:16,646 INFO L462 AbstractCegarLoop]: Abstraction has 575 states and 656 transitions. [2019-10-13 23:18:16,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:18:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 656 transitions. [2019-10-13 23:18:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:18:16,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:16,653 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:16,653 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:16,654 INFO L82 PathProgramCache]: Analyzing trace with hash -120042701, now seen corresponding path program 1 times [2019-10-13 23:18:16,654 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:16,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529731803] [2019-10-13 23:18:16,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:16,660 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:16,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:18:16,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529731803] [2019-10-13 23:18:16,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559377992] [2019-10-13 23:18:16,806 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 23:18:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:17,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:18:17,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:18:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:18:17,195 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:18:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:18:17,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [787446373] [2019-10-13 23:18:17,625 INFO L162 IcfgInterpreter]: Started Sifa with 97 locations of interest [2019-10-13 23:18:17,626 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:18:17,631 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:18:17,638 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:18:17,638 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:18:27,122 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:18:28,934 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:18:29,065 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:18:29,198 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:18:29,324 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:18:29,688 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:29,951 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:30,185 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:30,458 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:30,820 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:18:31,024 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:31,183 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:31,325 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:31,459 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:31,591 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:18:31,600 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:18:31,886 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:18:31,887 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:18:32,066 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:32,269 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:32,432 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:32,544 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:32,664 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:32,827 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:32,950 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:33,070 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:33,209 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:33,547 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 546 [2019-10-13 23:18:33,650 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:33,802 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:33,924 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:34,060 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:34,184 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:34,388 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:34,508 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:34,625 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:34,773 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:34,892 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:35,210 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:35,312 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:35,429 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:35,552 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:35,955 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:36,077 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:36,196 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:18:36,333 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:36,656 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:36,990 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:37,140 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:37,253 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:37,375 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:37,634 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:18:37,748 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:37,927 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:38,044 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:38,155 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:38,276 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:38,419 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:18:38,533 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:18:38,661 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:38,892 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:18:39,005 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:39,268 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:39,601 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-13 23:18:39,715 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:18:39,840 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:39,973 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:18:40,086 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:18:40,210 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:40,326 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:40,439 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:40,584 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:18:40,712 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:40,824 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:40,955 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:18:41,165 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-13 23:18:41,277 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:41,404 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:18:41,519 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:41,632 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:41,755 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:18:42,011 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:18:42,121 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:42,318 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:42,529 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:18:42,640 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:42,767 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:42,879 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:42,993 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:43,120 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:43,354 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:18:43,468 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:43,599 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:43,816 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:18:43,930 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:44,072 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:44,183 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:44,295 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:44,416 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:44,611 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 564 [2019-10-13 23:18:44,722 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:44,854 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:18:45,058 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 566 [2019-10-13 23:18:45,170 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:18:45,304 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:18:45,517 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:18:45,627 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:45,750 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:45,956 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:18:46,083 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:46,207 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:46,316 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:46,425 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:46,546 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:46,761 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:18:46,871 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:46,997 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:47,226 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:18:47,336 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:47,461 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:47,569 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:47,677 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:47,797 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:18:48,008 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-13 23:18:48,125 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:18:48,282 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 564