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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:21:36,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:21:36,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:21:36,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:21:36,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:21:36,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:21:36,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:21:36,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:21:36,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:21:36,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:21:36,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:21:36,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:21:36,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:21:36,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:21:36,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:21:36,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:21:36,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:21:36,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:21:36,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:21:36,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:21:36,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:21:36,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:21:36,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:21:36,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:21:36,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:21:36,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:21:36,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:21:36,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:21:36,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:21:36,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:21:36,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:21:36,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:21:36,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:21:36,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:21:36,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:21:36,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:21:36,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:21:36,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:21:36,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:21:36,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:21:36,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:21:36,424 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 03:21:36,451 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:21:36,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:21:36,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:21:36,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:21:36,453 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:21:36,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:21:36,453 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:21:36,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:21:36,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:21:36,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:21:36,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:21:36,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:21:36,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:21:36,455 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:21:36,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:21:36,455 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:21:36,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:21:36,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:21:36,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:21:36,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:21:36,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:21:36,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:21:36,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:21:36,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:21:36,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:21:36,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:21:36,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:21:36,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:21:36,458 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 03:21:36,735 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:21:36,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:21:36,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:21:36,757 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:21:36,758 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:21:36,759 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-10-15 03:21:36,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9ebb2c8/e1b18becff6f450f9ff930d06f363cf1/FLAG888bc277d [2019-10-15 03:21:37,379 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:21:37,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-10-15 03:21:37,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9ebb2c8/e1b18becff6f450f9ff930d06f363cf1/FLAG888bc277d [2019-10-15 03:21:37,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9ebb2c8/e1b18becff6f450f9ff930d06f363cf1 [2019-10-15 03:21:37,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:21:37,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:21:37,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:37,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:21:37,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:21:37,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:37" (1/1) ... [2019-10-15 03:21:37,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:37, skipping insertion in model container [2019-10-15 03:21:37,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:37" (1/1) ... [2019-10-15 03:21:37,726 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:21:37,766 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:21:38,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:38,240 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:21:38,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:38,389 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:21:38,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38 WrapperNode [2019-10-15 03:21:38,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:38,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:21:38,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:21:38,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:21:38,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:21:38,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:21:38,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:21:38,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:21:38,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (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 03:21:38,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:21:38,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:21:38,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:38,590 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:21:38,590 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:21:38,591 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:21:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:21:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:21:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:21:38,593 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:21:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:21:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:21:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:21:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:21:38,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:21:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:21:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:38,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:21:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:21:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:21:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:21:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:21:38,598 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:21:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:21:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:21:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:21:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:21:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:21:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:21:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:21:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:21:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:21:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:21:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:21:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:21:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:21:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:21:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:21:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:21:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:21:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:21:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:21:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:21:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:21:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:21:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:21:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:21:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:21:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:21:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:21:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:21:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:21:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:21:38,604 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:21:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:21:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:21:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:21:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:21:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:21:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:21:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:21:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:21:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:21:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:21:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:21:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:21:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:21:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:21:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:21:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:21:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:21:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:21:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:21:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:21:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:21:38,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:21:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:21:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:21:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:21:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:21:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:21:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:38,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:21:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:21:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:21:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:21:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:21:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:21:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:21:40,299 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:21:40,299 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:21:40,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:40 BoogieIcfgContainer [2019-10-15 03:21:40,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:21:40,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:21:40,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:21:40,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:21:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:21:37" (1/3) ... [2019-10-15 03:21:40,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b3ec68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:40, skipping insertion in model container [2019-10-15 03:21:40,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (2/3) ... [2019-10-15 03:21:40,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b3ec68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:40, skipping insertion in model container [2019-10-15 03:21:40,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:40" (3/3) ... [2019-10-15 03:21:40,313 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product55.cil.c [2019-10-15 03:21:40,324 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:21:40,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:21:40,346 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:21:40,383 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:21:40,383 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:21:40,383 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:21:40,383 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:21:40,384 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:21:40,384 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:21:40,384 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:21:40,385 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:21:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2019-10-15 03:21:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:21:40,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:40,431 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 03:21:40,433 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:40,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:40,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1667852070, now seen corresponding path program 1 times [2019-10-15 03:21:40,446 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:40,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293515585] [2019-10-15 03:21:40,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:40,844 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 03:21:40,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293515585] [2019-10-15 03:21:40,846 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:40,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:21:40,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72483266] [2019-10-15 03:21:40,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:21:40,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:21:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:21:40,883 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 2 states. [2019-10-15 03:21:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:40,975 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2019-10-15 03:21:40,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:21:40,979 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:21:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:40,996 INFO L225 Difference]: With dead ends: 257 [2019-10-15 03:21:40,996 INFO L226 Difference]: Without dead ends: 129 [2019-10-15 03:21:41,007 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 03:21:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-10-15 03:21:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-10-15 03:21:41,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-15 03:21:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2019-10-15 03:21:41,096 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 42 [2019-10-15 03:21:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:41,097 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2019-10-15 03:21:41,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:21:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2019-10-15 03:21:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:21:41,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:41,106 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 03:21:41,106 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash -934226068, now seen corresponding path program 1 times [2019-10-15 03:21:41,108 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:41,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089721376] [2019-10-15 03:21:41,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:41,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:41,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:41,268 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 03:21:41,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089721376] [2019-10-15 03:21:41,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:41,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:21:41,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113013858] [2019-10-15 03:21:41,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:21:41,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:41,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:21:41,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:21:41,274 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 3 states. [2019-10-15 03:21:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:41,322 INFO L93 Difference]: Finished difference Result 208 states and 242 transitions. [2019-10-15 03:21:41,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:21:41,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:21:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:41,328 INFO L225 Difference]: With dead ends: 208 [2019-10-15 03:21:41,328 INFO L226 Difference]: Without dead ends: 121 [2019-10-15 03:21:41,332 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 03:21:41,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-15 03:21:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-10-15 03:21:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-15 03:21:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2019-10-15 03:21:41,346 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 43 [2019-10-15 03:21:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:41,346 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2019-10-15 03:21:41,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:21:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2019-10-15 03:21:41,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:21:41,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:41,349 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 03:21:41,349 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:41,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1714663435, now seen corresponding path program 1 times [2019-10-15 03:21:41,353 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:41,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9048406] [2019-10-15 03:21:41,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:41,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:41,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:41,597 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 03:21:41,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9048406] [2019-10-15 03:21:41,598 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:41,598 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:21:41,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684811703] [2019-10-15 03:21:41,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:41,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:41,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:41,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:21:41,600 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand 7 states. [2019-10-15 03:21:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:42,093 INFO L93 Difference]: Finished difference Result 363 states and 433 transitions. [2019-10-15 03:21:42,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:21:42,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-15 03:21:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:42,098 INFO L225 Difference]: With dead ends: 363 [2019-10-15 03:21:42,099 INFO L226 Difference]: Without dead ends: 264 [2019-10-15 03:21:42,104 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 03:21:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-10-15 03:21:42,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 256. [2019-10-15 03:21:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2019-10-15 03:21:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 305 transitions. [2019-10-15 03:21:42,155 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 305 transitions. Word has length 46 [2019-10-15 03:21:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:42,156 INFO L462 AbstractCegarLoop]: Abstraction has 256 states and 305 transitions. [2019-10-15 03:21:42,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 305 transitions. [2019-10-15 03:21:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:21:42,158 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:42,158 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:42,159 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:42,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1924130010, now seen corresponding path program 1 times [2019-10-15 03:21:42,159 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:42,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834051153] [2019-10-15 03:21:42,160 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,160 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:42,293 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 03:21:42,294 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834051153] [2019-10-15 03:21:42,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:42,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:21:42,294 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285048094] [2019-10-15 03:21:42,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:21:42,295 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:42,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:21:42,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:42,297 INFO L87 Difference]: Start difference. First operand 256 states and 305 transitions. Second operand 10 states. [2019-10-15 03:21:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:43,030 INFO L93 Difference]: Finished difference Result 919 states and 1142 transitions. [2019-10-15 03:21:43,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:21:43,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-10-15 03:21:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:43,040 INFO L225 Difference]: With dead ends: 919 [2019-10-15 03:21:43,041 INFO L226 Difference]: Without dead ends: 685 [2019-10-15 03:21:43,043 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 03:21:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-15 03:21:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 661. [2019-10-15 03:21:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2019-10-15 03:21:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 806 transitions. [2019-10-15 03:21:43,141 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 806 transitions. Word has length 51 [2019-10-15 03:21:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:43,144 INFO L462 AbstractCegarLoop]: Abstraction has 661 states and 806 transitions. [2019-10-15 03:21:43,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:21:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 806 transitions. [2019-10-15 03:21:43,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 03:21:43,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:43,154 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:43,154 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:43,156 INFO L82 PathProgramCache]: Analyzing trace with hash 26521400, now seen corresponding path program 1 times [2019-10-15 03:21:43,156 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:43,156 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132909631] [2019-10-15 03:21:43,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:43,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:43,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:43,269 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 03:21:43,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132909631] [2019-10-15 03:21:43,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:43,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:21:43,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935144743] [2019-10-15 03:21:43,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:21:43,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:43,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:21:43,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:21:43,273 INFO L87 Difference]: Start difference. First operand 661 states and 806 transitions. Second operand 4 states. [2019-10-15 03:21:43,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:43,740 INFO L93 Difference]: Finished difference Result 1576 states and 2092 transitions. [2019-10-15 03:21:43,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:21:43,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2019-10-15 03:21:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:43,777 INFO L225 Difference]: With dead ends: 1576 [2019-10-15 03:21:43,778 INFO L226 Difference]: Without dead ends: 937 [2019-10-15 03:21:43,780 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:21:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2019-10-15 03:21:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 807. [2019-10-15 03:21:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2019-10-15 03:21:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 964 transitions. [2019-10-15 03:21:43,848 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 964 transitions. Word has length 57 [2019-10-15 03:21:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:43,849 INFO L462 AbstractCegarLoop]: Abstraction has 807 states and 964 transitions. [2019-10-15 03:21:43,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:21:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 964 transitions. [2019-10-15 03:21:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 03:21:43,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:43,852 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:43,852 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:43,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash 154264185, now seen corresponding path program 1 times [2019-10-15 03:21:43,853 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:43,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078857036] [2019-10-15 03:21:43,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:43,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:43,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:21:43,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078857036] [2019-10-15 03:21:43,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674239880] [2019-10-15 03:21:43,951 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 03:21:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:44,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:21:44,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:21:44,184 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:21:44,303 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:21:44,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-15 03:21:44,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730884368] [2019-10-15 03:21:44,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:44,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:44,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:44,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:21:44,305 INFO L87 Difference]: Start difference. First operand 807 states and 964 transitions. Second operand 7 states. [2019-10-15 03:21:44,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:44,556 INFO L93 Difference]: Finished difference Result 820 states and 980 transitions. [2019-10-15 03:21:44,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:21:44,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-15 03:21:44,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:44,562 INFO L225 Difference]: With dead ends: 820 [2019-10-15 03:21:44,562 INFO L226 Difference]: Without dead ends: 817 [2019-10-15 03:21:44,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:21:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2019-10-15 03:21:44,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 807. [2019-10-15 03:21:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2019-10-15 03:21:44,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 961 transitions. [2019-10-15 03:21:44,652 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 961 transitions. Word has length 78 [2019-10-15 03:21:44,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:44,652 INFO L462 AbstractCegarLoop]: Abstraction has 807 states and 961 transitions. [2019-10-15 03:21:44,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:44,653 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 961 transitions. [2019-10-15 03:21:44,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 03:21:44,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:44,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:44,867 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:44,867 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:44,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1634049548, now seen corresponding path program 1 times [2019-10-15 03:21:44,868 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:44,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131094518] [2019-10-15 03:21:44,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:44,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:44,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 03:21:44,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131094518] [2019-10-15 03:21:44,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:44,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:21:44,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965759524] [2019-10-15 03:21:44,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:21:44,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:44,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:21:44,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:21:44,949 INFO L87 Difference]: Start difference. First operand 807 states and 961 transitions. Second operand 4 states. [2019-10-15 03:21:45,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:45,146 INFO L93 Difference]: Finished difference Result 933 states and 1114 transitions. [2019-10-15 03:21:45,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:21:45,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2019-10-15 03:21:45,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:45,150 INFO L225 Difference]: With dead ends: 933 [2019-10-15 03:21:45,150 INFO L226 Difference]: Without dead ends: 356 [2019-10-15 03:21:45,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:21:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2019-10-15 03:21:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2019-10-15 03:21:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2019-10-15 03:21:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 410 transitions. [2019-10-15 03:21:45,174 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 410 transitions. Word has length 132 [2019-10-15 03:21:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:45,174 INFO L462 AbstractCegarLoop]: Abstraction has 356 states and 410 transitions. [2019-10-15 03:21:45,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:21:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 410 transitions. [2019-10-15 03:21:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 03:21:45,177 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:45,177 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, 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] [2019-10-15 03:21:45,178 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:45,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1852288223, now seen corresponding path program 1 times [2019-10-15 03:21:45,178 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:45,179 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648435858] [2019-10-15 03:21:45,179 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,179 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:21:45,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648435858] [2019-10-15 03:21:45,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618444959] [2019-10-15 03:21:45,298 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 03:21:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:45,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:21:45,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:21:45,657 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:45,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:45,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:21:45,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [675042194] [2019-10-15 03:21:46,020 INFO L162 IcfgInterpreter]: Started Sifa with 94 locations of interest [2019-10-15 03:21:46,020 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:21:46,027 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:21:46,035 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:21:46,036 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:21:55,453 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:21:57,201 WARN L191 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:21:57,334 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:21:57,468 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:21:57,586 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:21:57,797 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:58,067 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:58,263 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:58,493 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:58,854 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:21:58,992 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:59,144 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:59,291 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:59,416 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:21:59,530 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:21:59,764 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-15 03:21:59,890 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:00,013 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:00,210 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:00,343 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:00,485 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:00,615 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:00,737 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:00,840 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:00,958 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:01,212 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-15 03:22:01,319 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:01,454 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:01,815 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:02,018 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:02,133 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:02,468 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:02,776 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:03,094 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:03,217 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:03,327 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:03,442 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:03,750 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:03,958 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:04,074 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:04,388 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:04,525 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:04,631 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:04,787 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,077 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:05,182 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,303 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,410 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,518 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,634 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,778 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:05,899 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:06,017 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:06,265 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:06,371 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:06,493 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:06,687 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:06,819 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:06,952 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:07,065 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:07,176 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:07,297 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:07,408 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:07,519 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:07,662 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:07,792 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:07,908 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:08,030 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:08,152 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:08,263 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:08,446 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:08,557 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:08,671 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:08,791 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:09,022 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:09,129 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,249 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,444 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:09,550 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,674 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,780 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,887 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,006 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,135 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,244 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,366 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,478 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,587 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,716 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,824 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,932 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,049 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,278 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 565 [2019-10-15 03:22:11,389 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:11,511 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:11,710 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-15 03:22:11,821 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:11,949 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:12,155 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:12,261 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,383 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,579 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:12,685 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,805 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,911 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,017 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,132 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,357 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:13,465 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,601 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,802 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:13,908 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,033 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,139 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,246 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,360 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,480 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:14,588 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:14,714 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:14,905 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,014 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,135 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,243 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,352 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,471 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,667 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 565 [2019-10-15 03:22:15,776 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:15,896 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:16,114 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:16,222 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:16,339 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:16,539 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:16,645 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:16,761 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:16,868 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:16,973 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,087 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,347 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:17,454 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:17,575 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:17,805 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:18,084 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:18,269 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:18,469 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:18,574 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,703 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556