java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:17,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:17,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:17,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:17,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:17,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:17,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:17,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:17,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:17,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:17,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:17,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:17,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:17,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:17,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:17,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:17,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:17,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:17,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:17,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:17,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:17,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:17,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:17,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:17,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:17,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:17,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:17,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:17,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:17,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:17,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:17,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:17,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:17,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:17,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:17,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:17,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:17,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:17,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:17,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:17,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:17,350 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 03:20:17,364 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:17,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:17,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:17,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:17,366 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:17,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:17,366 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:17,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:17,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:17,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:17,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:17,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:17,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:17,368 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:17,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:17,368 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:17,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:17,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:17,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:17,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:17,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:17,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:17,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:17,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:17,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:17,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:17,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:17,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:17,371 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 03:20:17,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:17,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:17,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:17,711 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:17,712 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:17,713 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-10-15 03:20:17,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d9648e8/2181b19aeef4456a957e3c73c1b9a5ac/FLAG24fe7df8b [2019-10-15 03:20:18,351 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:18,351 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product59.cil.c [2019-10-15 03:20:18,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d9648e8/2181b19aeef4456a957e3c73c1b9a5ac/FLAG24fe7df8b [2019-10-15 03:20:18,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d9648e8/2181b19aeef4456a957e3c73c1b9a5ac [2019-10-15 03:20:18,673 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:18,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:18,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:18,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:18,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:18,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73855587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:18, skipping insertion in model container [2019-10-15 03:20:18,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:18" (1/1) ... [2019-10-15 03:20:18,692 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:18,751 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:19,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:19,295 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:19,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:19,429 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:19,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19 WrapperNode [2019-10-15 03:20:19,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:19,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:19,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:19,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:19,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (1/1) ... [2019-10-15 03:20:19,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:19,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:19,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:19,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:19,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (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 03:20:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:20:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:19,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:19,616 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:19,617 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:20:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:19,621 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:19,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:19,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:21,520 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:21,521 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:21,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:21 BoogieIcfgContainer [2019-10-15 03:20:21,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:21,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:21,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:21,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:21,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:18" (1/3) ... [2019-10-15 03:20:21,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d05cec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:21, skipping insertion in model container [2019-10-15 03:20:21,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:19" (2/3) ... [2019-10-15 03:20:21,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d05cec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:21, skipping insertion in model container [2019-10-15 03:20:21,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:21" (3/3) ... [2019-10-15 03:20:21,531 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2019-10-15 03:20:21,541 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:21,551 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:21,562 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:21,589 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:21,590 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:21,590 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:21,590 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:21,591 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:21,591 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:21,591 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:21,591 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2019-10-15 03:20:21,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:21,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:21,626 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 03:20:21,628 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2121098684, now seen corresponding path program 1 times [2019-10-15 03:20:21,644 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:21,644 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101429237] [2019-10-15 03:20:21,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:21,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:22,025 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 03:20:22,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101429237] [2019-10-15 03:20:22,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:22,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:22,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477750207] [2019-10-15 03:20:22,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:22,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:22,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:22,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:22,067 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 2 states. [2019-10-15 03:20:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:22,108 INFO L93 Difference]: Finished difference Result 252 states and 307 transitions. [2019-10-15 03:20:22,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:22,110 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:22,124 INFO L225 Difference]: With dead ends: 252 [2019-10-15 03:20:22,124 INFO L226 Difference]: Without dead ends: 128 [2019-10-15 03:20:22,129 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 03:20:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-15 03:20:22,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-15 03:20:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-15 03:20:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2019-10-15 03:20:22,190 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 46 [2019-10-15 03:20:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:22,191 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2019-10-15 03:20:22,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2019-10-15 03:20:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:22,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:22,196 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:22,196 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1668927638, now seen corresponding path program 1 times [2019-10-15 03:20:22,197 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:22,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894161051] [2019-10-15 03:20:22,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:22,357 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 03:20:22,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894161051] [2019-10-15 03:20:22,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:22,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:22,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216013173] [2019-10-15 03:20:22,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:22,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:22,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:22,362 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 3 states. [2019-10-15 03:20:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:22,392 INFO L93 Difference]: Finished difference Result 203 states and 235 transitions. [2019-10-15 03:20:22,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:22,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:22,396 INFO L225 Difference]: With dead ends: 203 [2019-10-15 03:20:22,396 INFO L226 Difference]: Without dead ends: 120 [2019-10-15 03:20:22,398 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 03:20:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-15 03:20:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-15 03:20:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-15 03:20:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 138 transitions. [2019-10-15 03:20:22,415 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 138 transitions. Word has length 47 [2019-10-15 03:20:22,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:22,415 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 138 transitions. [2019-10-15 03:20:22,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 138 transitions. [2019-10-15 03:20:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-15 03:20:22,418 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:22,419 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:22,419 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1914137400, now seen corresponding path program 1 times [2019-10-15 03:20:22,420 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:22,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624022861] [2019-10-15 03:20:22,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:22,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:22,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624022861] [2019-10-15 03:20:22,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:22,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:22,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190415169] [2019-10-15 03:20:22,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:22,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:22,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:22,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:22,609 INFO L87 Difference]: Start difference. First operand 120 states and 138 transitions. Second operand 7 states. [2019-10-15 03:20:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:23,099 INFO L93 Difference]: Finished difference Result 355 states and 423 transitions. [2019-10-15 03:20:23,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:23,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2019-10-15 03:20:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:23,105 INFO L225 Difference]: With dead ends: 355 [2019-10-15 03:20:23,105 INFO L226 Difference]: Without dead ends: 260 [2019-10-15 03:20:23,106 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 03:20:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2019-10-15 03:20:23,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 252. [2019-10-15 03:20:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2019-10-15 03:20:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 300 transitions. [2019-10-15 03:20:23,169 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 300 transitions. Word has length 50 [2019-10-15 03:20:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:23,169 INFO L462 AbstractCegarLoop]: Abstraction has 252 states and 300 transitions. [2019-10-15 03:20:23,170 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 300 transitions. [2019-10-15 03:20:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-15 03:20:23,179 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:23,180 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:23,180 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:23,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:23,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1762879004, now seen corresponding path program 1 times [2019-10-15 03:20:23,181 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:23,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114147680] [2019-10-15 03:20:23,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,181 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,345 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 03:20:23,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114147680] [2019-10-15 03:20:23,345 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:23,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:23,346 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320910552] [2019-10-15 03:20:23,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:23,347 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:23,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:23,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:23,347 INFO L87 Difference]: Start difference. First operand 252 states and 300 transitions. Second operand 6 states. [2019-10-15 03:20:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:23,595 INFO L93 Difference]: Finished difference Result 688 states and 837 transitions. [2019-10-15 03:20:23,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:23,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-15 03:20:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:23,601 INFO L225 Difference]: With dead ends: 688 [2019-10-15 03:20:23,601 INFO L226 Difference]: Without dead ends: 461 [2019-10-15 03:20:23,603 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:20:23,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-15 03:20:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 449. [2019-10-15 03:20:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-15 03:20:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 537 transitions. [2019-10-15 03:20:23,653 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 537 transitions. Word has length 55 [2019-10-15 03:20:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:23,653 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 537 transitions. [2019-10-15 03:20:23,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 537 transitions. [2019-10-15 03:20:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-15 03:20:23,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:23,656 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:23,656 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:23,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:23,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1307041602, now seen corresponding path program 1 times [2019-10-15 03:20:23,657 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:23,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865530656] [2019-10-15 03:20:23,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:23,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:23,822 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 03:20:23,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865530656] [2019-10-15 03:20:23,823 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:23,823 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:23,823 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920500745] [2019-10-15 03:20:23,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:23,824 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:23,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:23,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:23,826 INFO L87 Difference]: Start difference. First operand 449 states and 537 transitions. Second operand 7 states. [2019-10-15 03:20:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:24,452 INFO L93 Difference]: Finished difference Result 1167 states and 1516 transitions. [2019-10-15 03:20:24,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:20:24,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-15 03:20:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:24,459 INFO L225 Difference]: With dead ends: 1167 [2019-10-15 03:20:24,459 INFO L226 Difference]: Without dead ends: 743 [2019-10-15 03:20:24,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:20:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2019-10-15 03:20:24,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 656. [2019-10-15 03:20:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-10-15 03:20:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 784 transitions. [2019-10-15 03:20:24,547 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 784 transitions. Word has length 58 [2019-10-15 03:20:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:24,548 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 784 transitions. [2019-10-15 03:20:24,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 784 transitions. [2019-10-15 03:20:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-15 03:20:24,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:24,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:24,553 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:24,553 INFO L82 PathProgramCache]: Analyzing trace with hash 604340709, now seen corresponding path program 1 times [2019-10-15 03:20:24,553 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:24,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838792559] [2019-10-15 03:20:24,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:24,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:20:24,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838792559] [2019-10-15 03:20:24,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575801318] [2019-10-15 03:20:24,795 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 03:20:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:25,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:20:25,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:25,082 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:25,227 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:20:25,227 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-15 03:20:25,227 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088159552] [2019-10-15 03:20:25,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:25,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:25,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:25,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:25,230 INFO L87 Difference]: Start difference. First operand 656 states and 784 transitions. Second operand 3 states. [2019-10-15 03:20:25,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:25,302 INFO L93 Difference]: Finished difference Result 930 states and 1137 transitions. [2019-10-15 03:20:25,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:25,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-15 03:20:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:25,312 INFO L225 Difference]: With dead ends: 930 [2019-10-15 03:20:25,312 INFO L226 Difference]: Without dead ends: 927 [2019-10-15 03:20:25,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2019-10-15 03:20:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 899. [2019-10-15 03:20:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2019-10-15 03:20:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1100 transitions. [2019-10-15 03:20:25,392 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1100 transitions. Word has length 88 [2019-10-15 03:20:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:25,393 INFO L462 AbstractCegarLoop]: Abstraction has 899 states and 1100 transitions. [2019-10-15 03:20:25,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:25,393 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1100 transitions. [2019-10-15 03:20:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 03:20:25,397 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:25,398 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:25,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:25,612 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:25,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:25,613 INFO L82 PathProgramCache]: Analyzing trace with hash 45988478, now seen corresponding path program 1 times [2019-10-15 03:20:25,613 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:25,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810749454] [2019-10-15 03:20:25,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:25,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:25,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:20:25,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810749454] [2019-10-15 03:20:25,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355083266] [2019-10-15 03:20:25,902 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 03:20:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:26,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:20:26,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:20:26,226 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:20:27,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:27,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 12] total 25 [2019-10-15 03:20:27,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092797586] [2019-10-15 03:20:27,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:20:27,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:27,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:20:27,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2019-10-15 03:20:27,042 INFO L87 Difference]: Start difference. First operand 899 states and 1100 transitions. Second operand 11 states. [2019-10-15 03:20:27,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:27,898 INFO L93 Difference]: Finished difference Result 2052 states and 2602 transitions. [2019-10-15 03:20:27,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:20:27,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2019-10-15 03:20:27,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:27,907 INFO L225 Difference]: With dead ends: 2052 [2019-10-15 03:20:27,908 INFO L226 Difference]: Without dead ends: 1178 [2019-10-15 03:20:27,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2019-10-15 03:20:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-10-15 03:20:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1154. [2019-10-15 03:20:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2019-10-15 03:20:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1405 transitions. [2019-10-15 03:20:27,993 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1405 transitions. Word has length 140 [2019-10-15 03:20:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:27,994 INFO L462 AbstractCegarLoop]: Abstraction has 1154 states and 1405 transitions. [2019-10-15 03:20:27,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:20:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1405 transitions. [2019-10-15 03:20:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 03:20:28,002 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:28,002 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:28,208 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:28,209 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:28,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1417284751, now seen corresponding path program 1 times [2019-10-15 03:20:28,210 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:28,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697232075] [2019-10-15 03:20:28,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:28,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:28,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:20:28,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697232075] [2019-10-15 03:20:28,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479081927] [2019-10-15 03:20:28,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:28,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:20:28,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:28,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:28,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:28,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 03:20:29,096 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:29,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 03:20:30,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:20:30,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-15 03:20:30,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085919228] [2019-10-15 03:20:30,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:20:30,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:30,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:20:30,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:20:30,771 INFO L87 Difference]: Start difference. First operand 1154 states and 1405 transitions. Second operand 14 states. [2019-10-15 03:20:33,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:33,175 INFO L93 Difference]: Finished difference Result 3117 states and 3933 transitions. [2019-10-15 03:20:33,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-15 03:20:33,176 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 186 [2019-10-15 03:20:33,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:33,192 INFO L225 Difference]: With dead ends: 3117 [2019-10-15 03:20:33,192 INFO L226 Difference]: Without dead ends: 1988 [2019-10-15 03:20:33,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 349 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-10-15 03:20:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2019-10-15 03:20:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1858. [2019-10-15 03:20:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1858 states. [2019-10-15 03:20:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2280 transitions. [2019-10-15 03:20:33,349 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2280 transitions. Word has length 186 [2019-10-15 03:20:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:33,349 INFO L462 AbstractCegarLoop]: Abstraction has 1858 states and 2280 transitions. [2019-10-15 03:20:33,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:20:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2280 transitions. [2019-10-15 03:20:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 03:20:33,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:33,358 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:33,564 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:33,564 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:33,565 INFO L82 PathProgramCache]: Analyzing trace with hash 95366147, now seen corresponding path program 1 times [2019-10-15 03:20:33,565 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:33,566 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21618006] [2019-10-15 03:20:33,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:33,566 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:33,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-15 03:20:33,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21618006] [2019-10-15 03:20:33,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844614456] [2019-10-15 03:20:33,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:34,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-15 03:20:34,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:34,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:20:34,660 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:35,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:35,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-15 03:20:36,070 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [58947318] [2019-10-15 03:20:36,100 INFO L162 IcfgInterpreter]: Started Sifa with 110 locations of interest [2019-10-15 03:20:36,101 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:36,107 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:36,113 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:36,114 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:46,337 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:20:48,131 WARN L191 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:20:48,273 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:48,414 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:48,590 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:48,823 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,023 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,200 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,413 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:49,785 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:20:49,928 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,079 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,227 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,333 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,492 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:50,500 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:20:50,773 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:20:50,774 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-10-15 03:20:50,899 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,024 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,158 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,318 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,421 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,544 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,675 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,898 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,144 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 550 [2019-10-15 03:20:52,392 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,747 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,075 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,393 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:53,497 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,640 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:53,764 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,080 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,398 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,521 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:54,745 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:54,952 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:55,071 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,272 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:55,407 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,573 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,684 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,805 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,009 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:20:56,119 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,250 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,372 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,505 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,625 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,812 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 568