/usr/bin/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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:30:42,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:30:42,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:30:42,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:30:42,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:30:42,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:30:42,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:30:42,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:30:42,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:30:42,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:30:42,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:30:42,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:30:42,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:30:42,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:30:42,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:30:42,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:30:42,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:30:42,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:30:42,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:30:42,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:30:42,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:30:42,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:30:42,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:30:42,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:30:42,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:30:42,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:30:42,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:30:42,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:30:42,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:30:42,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:30:42,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:30:42,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:30:42,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:30:42,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:30:42,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:30:42,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:30:42,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:30:42,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:30:42,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:30:42,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:30:42,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:30:42,611 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 [2019-11-07 04:30:42,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:30:42,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:30:42,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:30:42,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:30:42,627 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:30:42,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:30:42,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:30:42,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:30:42,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:30:42,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:30:42,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:30:42,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:30:42,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:30:42,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:30:42,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:30:42,629 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:30:42,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:30:42,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:30:42,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:30:42,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:30:42,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:30:42,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:30:42,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:30:42,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:30:42,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:30:42,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:30:42,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:30:42,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:30:42,631 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 [2019-11-07 04:30:42,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:30:42,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:30:42,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:30:42,952 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:30:42,952 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:30:42,953 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product52.cil.c [2019-11-07 04:30:43,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af6ba167/90bd1eff6b5746bf828c28f3b63ef514/FLAG50c3a4f42 [2019-11-07 04:30:43,564 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:30:43,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product52.cil.c [2019-11-07 04:30:43,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af6ba167/90bd1eff6b5746bf828c28f3b63ef514/FLAG50c3a4f42 [2019-11-07 04:30:43,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1af6ba167/90bd1eff6b5746bf828c28f3b63ef514 [2019-11-07 04:30:43,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:30:43,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:30:43,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:30:43,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:30:43,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:30:43,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:30:43" (1/1) ... [2019-11-07 04:30:43,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c47c529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:43, skipping insertion in model container [2019-11-07 04:30:43,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:30:43" (1/1) ... [2019-11-07 04:30:43,863 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:30:43,925 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:30:44,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:30:44,406 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:30:44,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:30:44,617 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:30:44,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44 WrapperNode [2019-11-07 04:30:44,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:30:44,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:30:44,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:30:44,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:30:44,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (1/1) ... [2019-11-07 04:30:44,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (1/1) ... [2019-11-07 04:30:44,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (1/1) ... [2019-11-07 04:30:44,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (1/1) ... [2019-11-07 04:30:44,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (1/1) ... [2019-11-07 04:30:44,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (1/1) ... [2019-11-07 04:30:44,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (1/1) ... [2019-11-07 04:30:44,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:30:44,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:30:44,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:30:44,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:30:44,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (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 [2019-11-07 04:30:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:30:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:30:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:30:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:30:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:30:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:30:44,797 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:30:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:30:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:30:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:30:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:30:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:30:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:30:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:30:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:30:44,799 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:30:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:30:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:30:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:30:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:30:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:30:44,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:30:44,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:30:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:30:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:30:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:30:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:30:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:30:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:30:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:30:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:30:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:30:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:30:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:30:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:30:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:30:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:30:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:30:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:30:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:30:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:30:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:30:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:30:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:30:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:30:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:30:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:30:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:30:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:30:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:30:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:30:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:30:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:30:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:30:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:30:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:30:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:30:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:30:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:30:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:30:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:30:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:30:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:30:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:30:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:30:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:30:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:30:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:30:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:30:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:30:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:30:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:30:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:30:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:30:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:30:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:30:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:30:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:30:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:30:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:30:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:30:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:30:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:30:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:30:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:30:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:30:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:30:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:30:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:30:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:30:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:30:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:30:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:30:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:30:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:30:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:30:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:30:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:30:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:30:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:30:46,527 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:30:46,527 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:30:46,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:30:46 BoogieIcfgContainer [2019-11-07 04:30:46,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:30:46,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:30:46,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:30:46,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:30:46,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:30:43" (1/3) ... [2019-11-07 04:30:46,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1e9408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:30:46, skipping insertion in model container [2019-11-07 04:30:46,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:30:44" (2/3) ... [2019-11-07 04:30:46,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1e9408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:30:46, skipping insertion in model container [2019-11-07 04:30:46,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:30:46" (3/3) ... [2019-11-07 04:30:46,537 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product52.cil.c [2019-11-07 04:30:46,547 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:30:46,558 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:30:46,570 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:30:46,613 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:30:46,613 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:30:46,614 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:30:46,614 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:30:46,614 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:30:46,615 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:30:46,615 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:30:46,615 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:30:46,647 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2019-11-07 04:30:46,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 04:30:46,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:46,663 INFO L410 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] [2019-11-07 04:30:46,666 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash 96100431, now seen corresponding path program 1 times [2019-11-07 04:30:46,684 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:46,684 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797329947] [2019-11-07 04:30:46,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:47,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797329947] [2019-11-07 04:30:47,095 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:47,095 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:30:47,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966833864] [2019-11-07 04:30:47,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:30:47,102 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:47,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:30:47,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:30:47,118 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2019-11-07 04:30:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:47,159 INFO L93 Difference]: Finished difference Result 236 states and 287 transitions. [2019-11-07 04:30:47,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:30:47,160 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-11-07 04:30:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:47,173 INFO L225 Difference]: With dead ends: 236 [2019-11-07 04:30:47,173 INFO L226 Difference]: Without dead ends: 120 [2019-11-07 04:30:47,178 INFO L630 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 [2019-11-07 04:30:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-11-07 04:30:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-11-07 04:30:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-07 04:30:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2019-11-07 04:30:47,237 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 46 [2019-11-07 04:30:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:47,238 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2019-11-07 04:30:47,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:30:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2019-11-07 04:30:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 04:30:47,242 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:47,242 INFO L410 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] [2019-11-07 04:30:47,243 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:47,243 INFO L82 PathProgramCache]: Analyzing trace with hash -960704892, now seen corresponding path program 1 times [2019-11-07 04:30:47,244 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:47,244 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461135670] [2019-11-07 04:30:47,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:47,387 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461135670] [2019-11-07 04:30:47,387 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:47,388 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:30:47,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989432929] [2019-11-07 04:30:47,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:30:47,393 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:47,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:30:47,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:30:47,394 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 3 states. [2019-11-07 04:30:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:47,439 INFO L93 Difference]: Finished difference Result 184 states and 212 transitions. [2019-11-07 04:30:47,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:30:47,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-11-07 04:30:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:47,449 INFO L225 Difference]: With dead ends: 184 [2019-11-07 04:30:47,449 INFO L226 Difference]: Without dead ends: 112 [2019-11-07 04:30:47,451 INFO L630 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 [2019-11-07 04:30:47,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-07 04:30:47,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2019-11-07 04:30:47,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2019-11-07 04:30:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2019-11-07 04:30:47,477 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 47 [2019-11-07 04:30:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:47,483 INFO L462 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2019-11-07 04:30:47,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:30:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2019-11-07 04:30:47,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 04:30:47,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:47,488 INFO L410 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] [2019-11-07 04:30:47,488 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:47,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:47,488 INFO L82 PathProgramCache]: Analyzing trace with hash -677168152, now seen corresponding path program 1 times [2019-11-07 04:30:47,489 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:47,489 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204824991] [2019-11-07 04:30:47,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:47,722 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204824991] [2019-11-07 04:30:47,722 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:47,723 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:30:47,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101314405] [2019-11-07 04:30:47,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:30:47,724 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:47,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:30:47,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:30:47,725 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2019-11-07 04:30:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:48,276 INFO L93 Difference]: Finished difference Result 332 states and 396 transitions. [2019-11-07 04:30:48,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:30:48,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-11-07 04:30:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:48,281 INFO L225 Difference]: With dead ends: 332 [2019-11-07 04:30:48,281 INFO L226 Difference]: Without dead ends: 245 [2019-11-07 04:30:48,282 INFO L630 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 [2019-11-07 04:30:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2019-11-07 04:30:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 233. [2019-11-07 04:30:48,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-11-07 04:30:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 277 transitions. [2019-11-07 04:30:48,318 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 277 transitions. Word has length 51 [2019-11-07 04:30:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:48,319 INFO L462 AbstractCegarLoop]: Abstraction has 233 states and 277 transitions. [2019-11-07 04:30:48,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:30:48,319 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 277 transitions. [2019-11-07 04:30:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 04:30:48,322 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:48,323 INFO L410 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] [2019-11-07 04:30:48,323 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:48,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:48,323 INFO L82 PathProgramCache]: Analyzing trace with hash 2047593831, now seen corresponding path program 1 times [2019-11-07 04:30:48,324 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:48,324 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637357317] [2019-11-07 04:30:48,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:48,428 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637357317] [2019-11-07 04:30:48,428 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:48,428 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:30:48,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120544812] [2019-11-07 04:30:48,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:30:48,429 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:48,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:30:48,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:30:48,430 INFO L87 Difference]: Start difference. First operand 233 states and 277 transitions. Second operand 6 states. [2019-11-07 04:30:48,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:48,685 INFO L93 Difference]: Finished difference Result 631 states and 768 transitions. [2019-11-07 04:30:48,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:30:48,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-11-07 04:30:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:48,696 INFO L225 Difference]: With dead ends: 631 [2019-11-07 04:30:48,696 INFO L226 Difference]: Without dead ends: 423 [2019-11-07 04:30:48,699 INFO L630 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 [2019-11-07 04:30:48,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-11-07 04:30:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 411. [2019-11-07 04:30:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-11-07 04:30:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 491 transitions. [2019-11-07 04:30:48,788 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 491 transitions. Word has length 55 [2019-11-07 04:30:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:48,789 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 491 transitions. [2019-11-07 04:30:48,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:30:48,795 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 491 transitions. [2019-11-07 04:30:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 04:30:48,806 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:48,806 INFO L410 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] [2019-11-07 04:30:48,806 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:48,809 INFO L82 PathProgramCache]: Analyzing trace with hash 795424947, now seen corresponding path program 1 times [2019-11-07 04:30:48,809 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:48,809 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278857157] [2019-11-07 04:30:48,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:48,961 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278857157] [2019-11-07 04:30:48,961 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:48,961 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:30:48,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827945655] [2019-11-07 04:30:48,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:30:48,962 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:48,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:30:48,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:30:48,963 INFO L87 Difference]: Start difference. First operand 411 states and 491 transitions. Second operand 7 states. [2019-11-07 04:30:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:49,580 INFO L93 Difference]: Finished difference Result 1091 states and 1426 transitions. [2019-11-07 04:30:49,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:30:49,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-11-07 04:30:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:49,585 INFO L225 Difference]: With dead ends: 1091 [2019-11-07 04:30:49,586 INFO L226 Difference]: Without dead ends: 705 [2019-11-07 04:30:49,588 INFO L630 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 [2019-11-07 04:30:49,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-11-07 04:30:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 616. [2019-11-07 04:30:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-11-07 04:30:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 736 transitions. [2019-11-07 04:30:49,651 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 736 transitions. Word has length 58 [2019-11-07 04:30:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:49,652 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 736 transitions. [2019-11-07 04:30:49,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:30:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 736 transitions. [2019-11-07 04:30:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-11-07 04:30:49,656 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:49,657 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:30:49,657 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:49,658 INFO L82 PathProgramCache]: Analyzing trace with hash 315567280, now seen corresponding path program 1 times [2019-11-07 04:30:49,658 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:49,658 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393715101] [2019-11-07 04:30:49,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:49,758 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393715101] [2019-11-07 04:30:49,759 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:30:49,759 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:30:49,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941228053] [2019-11-07 04:30:49,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:30:49,761 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:49,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:30:49,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:30:49,761 INFO L87 Difference]: Start difference. First operand 616 states and 736 transitions. Second operand 3 states. [2019-11-07 04:30:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:49,822 INFO L93 Difference]: Finished difference Result 867 states and 1062 transitions. [2019-11-07 04:30:49,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:30:49,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-11-07 04:30:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:49,833 INFO L225 Difference]: With dead ends: 867 [2019-11-07 04:30:49,833 INFO L226 Difference]: Without dead ends: 864 [2019-11-07 04:30:49,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:30:49,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2019-11-07 04:30:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 824. [2019-11-07 04:30:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2019-11-07 04:30:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1009 transitions. [2019-11-07 04:30:49,907 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1009 transitions. Word has length 76 [2019-11-07 04:30:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:49,909 INFO L462 AbstractCegarLoop]: Abstraction has 824 states and 1009 transitions. [2019-11-07 04:30:49,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:30:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1009 transitions. [2019-11-07 04:30:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 04:30:49,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:49,921 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:30:49,921 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:49,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:49,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1697203389, now seen corresponding path program 1 times [2019-11-07 04:30:49,922 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:49,922 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226008065] [2019-11-07 04:30:49,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:30:50,224 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226008065] [2019-11-07 04:30:50,224 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823638668] [2019-11-07 04:30:50,225 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 [2019-11-07 04:30:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:50,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-07 04:30:50,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:30:50,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:50,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:50,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:50,915 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:30:51,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:52,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:52,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:52,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:52,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 04:30:52,609 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:30:52,610 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-11-07 04:30:52,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944536914] [2019-11-07 04:30:52,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:30:52,611 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:52,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:30:52,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:30:52,612 INFO L87 Difference]: Start difference. First operand 824 states and 1009 transitions. Second operand 14 states. [2019-11-07 04:30:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:55,170 INFO L93 Difference]: Finished difference Result 2317 states and 2953 transitions. [2019-11-07 04:30:55,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:30:55,171 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 129 [2019-11-07 04:30:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:55,181 INFO L225 Difference]: With dead ends: 2317 [2019-11-07 04:30:55,182 INFO L226 Difference]: Without dead ends: 1518 [2019-11-07 04:30:55,187 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 235 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-11-07 04:30:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2019-11-07 04:30:55,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1409. [2019-11-07 04:30:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2019-11-07 04:30:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1737 transitions. [2019-11-07 04:30:55,293 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1737 transitions. Word has length 129 [2019-11-07 04:30:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:55,293 INFO L462 AbstractCegarLoop]: Abstraction has 1409 states and 1737 transitions. [2019-11-07 04:30:55,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:30:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1737 transitions. [2019-11-07 04:30:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 04:30:55,299 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:55,299 INFO L410 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:30:55,506 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:30:55,506 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash 30992745, now seen corresponding path program 1 times [2019-11-07 04:30:55,507 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:55,507 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977397904] [2019-11-07 04:30:55,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:30:55,628 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977397904] [2019-11-07 04:30:55,629 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009205501] [2019-11-07 04:30:55,629 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 [2019-11-07 04:30:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:55,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:30:55,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:30:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:55,905 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:30:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:30:56,067 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:30:56,068 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 8 [2019-11-07 04:30:56,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700535358] [2019-11-07 04:30:56,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:30:56,069 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:30:56,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:30:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:30:56,070 INFO L87 Difference]: Start difference. First operand 1409 states and 1737 transitions. Second operand 3 states. [2019-11-07 04:30:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:30:56,290 INFO L93 Difference]: Finished difference Result 2730 states and 3381 transitions. [2019-11-07 04:30:56,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:30:56,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-11-07 04:30:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:30:56,300 INFO L225 Difference]: With dead ends: 2730 [2019-11-07 04:30:56,300 INFO L226 Difference]: Without dead ends: 1346 [2019-11-07 04:30:56,304 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:30:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2019-11-07 04:30:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1325. [2019-11-07 04:30:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2019-11-07 04:30:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1534 transitions. [2019-11-07 04:30:56,384 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1534 transitions. Word has length 129 [2019-11-07 04:30:56,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:30:56,385 INFO L462 AbstractCegarLoop]: Abstraction has 1325 states and 1534 transitions. [2019-11-07 04:30:56,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:30:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1534 transitions. [2019-11-07 04:30:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 04:30:56,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:30:56,390 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:30:56,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:30:56,595 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:30:56,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:30:56,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1739006106, now seen corresponding path program 1 times [2019-11-07 04:30:56,596 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:30:56,596 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574544067] [2019-11-07 04:30:56,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:30:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:30:56,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574544067] [2019-11-07 04:30:56,959 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938236433] [2019-11-07 04:30:56,959 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 [2019-11-07 04:30:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:30:57,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 56 conjunts are in the unsatisfiable core [2019-11-07 04:30:57,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:30:57,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:57,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:30:57,468 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:30:57,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:57,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:57,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:57,960 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:57,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:58,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:58,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:58,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:58,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:58,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:30:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:30:58,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1381865768] [2019-11-07 04:30:58,427 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2019-11-07 04:30:58,427 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:30:58,433 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:30:58,439 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:30:58,440 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:31:10,236 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-07 04:31:11,960 WARN L191 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:31:12,113 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:12,389 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:12,642 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:12,970 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:31:13,103 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:13,223 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:13,434 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:31:13,443 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-11-07 04:31:13,459 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-11-07 04:31:13,710 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:13,887 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:14,053 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:14,182 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:14,301 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:14,468 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:14,588 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:14,699 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:14,824 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:14,965 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:15,074 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-11-07 04:31:15,247 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:15,399 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:15,515 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:15,648 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:15,796 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:15,910 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:16,034 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:16,146 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:16,271 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:16,564 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:16,789 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:16,917 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:17,085 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:17,291 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:17,408 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:17,602 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:17,739 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:17,900 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:18,042 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:18,240 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:18,358 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:18,557 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:18,805 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:18,979 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:19,110 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-11-07 04:31:19,129 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 552 for LOIs [2019-11-07 04:31:19,397 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:31:19,515 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:31:19,666 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:19,769 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:31:19,894 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:31:20,019 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:20,027 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-11-07 04:31:20,270 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:20,620 WARN L191 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 569 [2019-11-07 04:31:21,063 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 588 DAG size of output: 588 [2019-11-07 04:31:21,589 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 591