java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:18:50,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:18:50,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:18:50,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:18:50,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:18:50,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:18:50,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:18:50,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:18:50,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:18:50,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:18:50,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:18:50,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:18:50,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:18:50,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:18:50,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:18:50,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:18:50,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:18:50,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:18:50,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:18:50,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:18:50,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:18:50,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:18:50,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:18:50,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:18:50,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:18:50,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:18:50,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:18:50,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:18:50,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:18:50,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:18:50,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:18:50,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:18:50,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:18:50,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:18:50,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:18:50,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:18:50,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:18:50,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:18:50,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:18:50,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:18:50,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:18:50,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:18:50,779 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:18:50,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:18:50,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:18:50,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:18:50,781 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:18:50,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:18:50,781 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:18:50,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:18:50,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:18:50,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:18:50,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:18:50,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:18:50,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:18:50,783 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:18:50,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:18:50,783 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:18:50,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:18:50,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:18:50,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:18:50,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:18:50,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:18:50,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:50,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:18:50,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:18:50,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:18:50,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:18:50,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:18:50,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:18:50,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:18:51,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:18:51,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:18:51,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:18:51,133 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:18:51,134 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:18:51,134 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-10-13 23:18:51,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1feb333df/5c4cc1466f3342d9b81766c419153cd9/FLAG4df0dc1b1 [2019-10-13 23:18:51,801 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:18:51,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product54.cil.c [2019-10-13 23:18:51,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1feb333df/5c4cc1466f3342d9b81766c419153cd9/FLAG4df0dc1b1 [2019-10-13 23:18:52,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1feb333df/5c4cc1466f3342d9b81766c419153cd9 [2019-10-13 23:18:52,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:18:52,033 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:18:52,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:52,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:18:52,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:18:52,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419573bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52, skipping insertion in model container [2019-10-13 23:18:52,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,051 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:18:52,109 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:18:52,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:52,552 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:18:52,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:52,689 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:18:52,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52 WrapperNode [2019-10-13 23:18:52,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:52,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:18:52,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:18:52,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:18:52,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:18:52,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:18:52,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:18:52,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:18:52,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:52,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:18:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:18:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:52,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:18:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:18:52,881 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:18:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:18:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:18:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:18:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:18:52,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:18:52,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:18:52,884 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:18:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:18:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:18:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:18:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:18:52,887 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:18:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:18:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:18:52,888 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:18:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:18:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:18:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:18:52,889 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:18:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:18:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:18:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:18:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:18:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:18:52,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:18:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:18:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:18:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:18:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:52,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:18:52,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:18:52,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:18:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:18:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:18:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:18:52,892 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:18:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:18:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:18:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:52,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:18:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:18:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:18:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:18:52,894 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:18:52,895 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:18:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:18:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:18:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:18:52,896 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:18:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:18:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:18:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:18:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:18:52,897 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:18:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:18:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:18:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:18:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:18:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:18:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:18:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:18:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:18:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:18:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:18:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:18:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:18:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:18:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:18:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:18:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:18:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:18:52,903 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:18:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:18:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:18:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:18:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:18:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:52,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:18:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:18:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:18:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:18:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:18:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:18:52,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:18:54,601 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:18:54,602 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:18:54,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:54 BoogieIcfgContainer [2019-10-13 23:18:54,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:18:54,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:18:54,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:18:54,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:18:54,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:52" (1/3) ... [2019-10-13 23:18:54,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b980a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:54, skipping insertion in model container [2019-10-13 23:18:54,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (2/3) ... [2019-10-13 23:18:54,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b980a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:54, skipping insertion in model container [2019-10-13 23:18:54,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:54" (3/3) ... [2019-10-13 23:18:54,613 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2019-10-13 23:18:54,623 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:18:54,632 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:18:54,642 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:18:54,676 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:18:54,677 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:18:54,677 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:18:54,677 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:18:54,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:18:54,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:18:54,680 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:18:54,680 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:18:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2019-10-13 23:18:54,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:18:54,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,715 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:54,717 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2004867032, now seen corresponding path program 1 times [2019-10-13 23:18:54,732 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149996359] [2019-10-13 23:18:54,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149996359] [2019-10-13 23:18:55,127 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:18:55,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842229676] [2019-10-13 23:18:55,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:18:55,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:18:55,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:55,153 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 2 states. [2019-10-13 23:18:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,202 INFO L93 Difference]: Finished difference Result 264 states and 319 transitions. [2019-10-13 23:18:55,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:18:55,204 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:18:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,219 INFO L225 Difference]: With dead ends: 264 [2019-10-13 23:18:55,219 INFO L226 Difference]: Without dead ends: 134 [2019-10-13 23:18:55,224 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:55,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2019-10-13 23:18:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2019-10-13 23:18:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-13 23:18:55,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2019-10-13 23:18:55,292 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 52 [2019-10-13 23:18:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,293 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2019-10-13 23:18:55,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:18:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2019-10-13 23:18:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:18:55,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,298 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:55,298 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1132766157, now seen corresponding path program 1 times [2019-10-13 23:18:55,299 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070419543] [2019-10-13 23:18:55,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070419543] [2019-10-13 23:18:55,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:18:55,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811810044] [2019-10-13 23:18:55,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:18:55,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:18:55,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:55,473 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 3 states. [2019-10-13 23:18:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,499 INFO L93 Difference]: Finished difference Result 218 states and 253 transitions. [2019-10-13 23:18:55,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:18:55,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:18:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,503 INFO L225 Difference]: With dead ends: 218 [2019-10-13 23:18:55,503 INFO L226 Difference]: Without dead ends: 126 [2019-10-13 23:18:55,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-13 23:18:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-13 23:18:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-13 23:18:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2019-10-13 23:18:55,524 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 53 [2019-10-13 23:18:55,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,524 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2019-10-13 23:18:55,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:18:55,524 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2019-10-13 23:18:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 23:18:55,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,528 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] [2019-10-13 23:18:55,528 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash 2144150323, now seen corresponding path program 1 times [2019-10-13 23:18:55,529 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506518013] [2019-10-13 23:18:55,529 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,530 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,731 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506518013] [2019-10-13 23:18:55,731 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,732 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:55,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793585135] [2019-10-13 23:18:55,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:55,733 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:55,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:55,734 INFO L87 Difference]: Start difference. First operand 126 states and 144 transitions. Second operand 7 states. [2019-10-13 23:18:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:56,101 INFO L93 Difference]: Finished difference Result 227 states and 264 transitions. [2019-10-13 23:18:56,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:18:56,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-13 23:18:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:56,106 INFO L225 Difference]: With dead ends: 227 [2019-10-13 23:18:56,106 INFO L226 Difference]: Without dead ends: 126 [2019-10-13 23:18:56,109 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 [2019-10-13 23:18:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-10-13 23:18:56,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2019-10-13 23:18:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2019-10-13 23:18:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2019-10-13 23:18:56,127 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 56 [2019-10-13 23:18:56,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:56,129 INFO L462 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2019-10-13 23:18:56,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:56,129 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2019-10-13 23:18:56,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-13 23:18:56,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,133 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] [2019-10-13 23:18:56,133 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash -654841893, now seen corresponding path program 1 times [2019-10-13 23:18:56,134 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461018279] [2019-10-13 23:18:56,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:56,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461018279] [2019-10-13 23:18:56,252 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:56,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:18:56,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172744902] [2019-10-13 23:18:56,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:18:56,258 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:56,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:18:56,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:18:56,259 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand 5 states. [2019-10-13 23:18:56,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:56,820 INFO L93 Difference]: Finished difference Result 329 states and 392 transitions. [2019-10-13 23:18:56,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:18:56,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2019-10-13 23:18:56,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:56,826 INFO L225 Difference]: With dead ends: 329 [2019-10-13 23:18:56,827 INFO L226 Difference]: Without dead ends: 228 [2019-10-13 23:18:56,828 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:18:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2019-10-13 23:18:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 211. [2019-10-13 23:18:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-10-13 23:18:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 235 transitions. [2019-10-13 23:18:56,869 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 235 transitions. Word has length 73 [2019-10-13 23:18:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:56,870 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 235 transitions. [2019-10-13 23:18:56,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:18:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 235 transitions. [2019-10-13 23:18:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 23:18:56,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,873 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] [2019-10-13 23:18:56,873 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash 133990115, now seen corresponding path program 1 times [2019-10-13 23:18:56,874 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,874 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140406858] [2019-10-13 23:18:56,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:57,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140406858] [2019-10-13 23:18:57,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:57,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:18:57,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396385937] [2019-10-13 23:18:57,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:18:57,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:57,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:18:57,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:18:57,121 INFO L87 Difference]: Start difference. First operand 211 states and 235 transitions. Second operand 12 states. [2019-10-13 23:18:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:58,083 INFO L93 Difference]: Finished difference Result 561 states and 642 transitions. [2019-10-13 23:18:58,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:18:58,083 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-10-13 23:18:58,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:58,088 INFO L225 Difference]: With dead ends: 561 [2019-10-13 23:18:58,089 INFO L226 Difference]: Without dead ends: 375 [2019-10-13 23:18:58,090 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2019-10-13 23:18:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 363. [2019-10-13 23:18:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2019-10-13 23:18:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 414 transitions. [2019-10-13 23:18:58,127 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 414 transitions. Word has length 83 [2019-10-13 23:18:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:58,127 INFO L462 AbstractCegarLoop]: Abstraction has 363 states and 414 transitions. [2019-10-13 23:18:58,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:18:58,128 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 414 transitions. [2019-10-13 23:18:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 23:18:58,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:58,130 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] [2019-10-13 23:18:58,130 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash -712728111, now seen corresponding path program 1 times [2019-10-13 23:18:58,131 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:58,131 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255872548] [2019-10-13 23:18:58,131 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,132 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:18:58,283 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255872548] [2019-10-13 23:18:58,284 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:58,285 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:58,285 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581230996] [2019-10-13 23:18:58,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:58,286 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:58,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:58,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:58,286 INFO L87 Difference]: Start difference. First operand 363 states and 414 transitions. Second operand 7 states. [2019-10-13 23:18:58,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:58,900 INFO L93 Difference]: Finished difference Result 729 states and 857 transitions. [2019-10-13 23:18:58,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:18:58,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2019-10-13 23:18:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:58,904 INFO L225 Difference]: With dead ends: 729 [2019-10-13 23:18:58,905 INFO L226 Difference]: Without dead ends: 391 [2019-10-13 23:18:58,906 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:18:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-10-13 23:18:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 360. [2019-10-13 23:18:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2019-10-13 23:18:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 405 transitions. [2019-10-13 23:18:58,940 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 405 transitions. Word has length 83 [2019-10-13 23:18:58,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:58,940 INFO L462 AbstractCegarLoop]: Abstraction has 360 states and 405 transitions. [2019-10-13 23:18:58,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:58,941 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 405 transitions. [2019-10-13 23:18:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-10-13 23:18:58,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:58,943 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] [2019-10-13 23:18:58,943 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:58,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1315543544, now seen corresponding path program 1 times [2019-10-13 23:18:58,944 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:58,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324813290] [2019-10-13 23:18:58,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:59,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324813290] [2019-10-13 23:18:59,121 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:59,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:18:59,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278180944] [2019-10-13 23:18:59,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:18:59,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:18:59,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:18:59,123 INFO L87 Difference]: Start difference. First operand 360 states and 405 transitions. Second operand 9 states. [2019-10-13 23:19:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:19:00,069 INFO L93 Difference]: Finished difference Result 1103 states and 1272 transitions. [2019-10-13 23:19:00,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:19:00,070 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2019-10-13 23:19:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:19:00,076 INFO L225 Difference]: With dead ends: 1103 [2019-10-13 23:19:00,076 INFO L226 Difference]: Without dead ends: 834 [2019-10-13 23:19:00,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:19:00,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2019-10-13 23:19:00,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 724. [2019-10-13 23:19:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2019-10-13 23:19:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 822 transitions. [2019-10-13 23:19:00,165 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 822 transitions. Word has length 86 [2019-10-13 23:19:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:19:00,168 INFO L462 AbstractCegarLoop]: Abstraction has 724 states and 822 transitions. [2019-10-13 23:19:00,168 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:19:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 822 transitions. [2019-10-13 23:19:00,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 23:19:00,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:19:00,177 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:19:00,177 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:19:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:19:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1528068328, now seen corresponding path program 1 times [2019-10-13 23:19:00,178 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:19:00,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060321120] [2019-10-13 23:19:00,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:00,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:19:00,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:19:00,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060321120] [2019-10-13 23:19:00,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323933475] [2019-10-13 23:19:00,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:19:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:00,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:19:00,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:19:00,821 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:19:01,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181585485] [2019-10-13 23:19:01,343 INFO L162 IcfgInterpreter]: Started Sifa with 115 locations of interest [2019-10-13 23:19:01,343 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:01,355 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:01,364 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:01,364 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:10,958 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:12,774 WARN L191 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:12,918 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:13,081 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:13,287 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:13,650 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,907 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,168 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,393 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,912 WARN L191 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:15,128 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,328 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,454 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,605 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,805 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,816 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:16,046 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:16,189 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,302 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,438 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,552 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,655 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,816 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,977 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,088 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,221 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,524 WARN L191 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:19:17,773 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,888 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,999 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,151 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,355 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,491 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,597 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,704 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,860 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,971 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,076 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,200 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,403 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,541 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,644 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,756 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,878 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,982 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,216 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,341 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,569 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:20,892 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,041 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,175 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,301 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,425 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,556 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,688 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,803 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:21,919 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,076 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,225 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,342 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,471 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,695 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:22,812 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:22,947 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,167 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:23,284 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:23,412 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,531 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:23,651 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:23,791 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:23,913 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,054 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,184 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:24,319 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,442 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,713 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:25,114 WARN L191 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:25,231 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,388 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:25,505 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,622 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,750 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:25,879 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,993 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,126 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,246 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,372 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,506 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,628 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,742 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,867 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,113 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:27,230 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:27,361 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,606 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:27,727 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:27,862 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:28,075 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:28,192 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:28,320 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:28,543 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-13 23:19:28,671 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:28,798 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,018 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-13 23:19:29,140 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:29,276 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:29,406 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,524 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,653 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,771 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:29,884 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,014 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,139 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,252 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,375 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,501 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,617 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,745 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,875 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:30,990 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,117 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,230 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,341 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,463 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:31,688 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:31,804 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:31,933 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568