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_spec1_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:19:17,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:19:17,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:19:17,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:19:17,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:19:17,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:19:17,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:19:17,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:19:17,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:19:17,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:19:17,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:19:17,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:19:17,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:19:17,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:19:17,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:19:17,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:19:17,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:19:17,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:19:17,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:19:17,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:19:17,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:19:17,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:19:17,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:19:17,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:19:17,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:19:17,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:19:17,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:19:17,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:19:17,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:19:17,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:19:17,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:19:17,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:19:17,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:19:17,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:19:17,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:19:17,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:19:17,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:19:17,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:19:17,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:19:17,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:19:17,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:19:17,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:19:17,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:19:17,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:19:17,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:19:17,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:19:17,936 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:19:17,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:19:17,937 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:19:17,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:19:17,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:19:17,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:19:17,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:19:17,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:19:17,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:19:17,941 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:19:17,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:19:17,942 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:19:17,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:19:17,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:19:17,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:19:17,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:19:17,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:19:17,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:19:17,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:19:17,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:19:17,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:19:17,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:19:17,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:19:17,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:19:17,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:19:18,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:19:18,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:19:18,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:19:18,218 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:19:18,218 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:19:18,219 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-15 03:19:18,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486b0516c/6c89df2a817a49e3ba1f7a64f6216af5/FLAG3a2e78d27 [2019-10-15 03:19:18,834 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:19:18,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-15 03:19:18,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486b0516c/6c89df2a817a49e3ba1f7a64f6216af5/FLAG3a2e78d27 [2019-10-15 03:19:19,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486b0516c/6c89df2a817a49e3ba1f7a64f6216af5 [2019-10-15 03:19:19,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:19:19,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:19:19,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:19:19,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:19:19,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:19:19,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:19,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42247b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19, skipping insertion in model container [2019-10-15 03:19:19,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:19,134 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:19:19,189 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:19:19,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:19:19,705 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:19:19,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:19:19,892 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:19:19,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19 WrapperNode [2019-10-15 03:19:19,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:19:19,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:19:19,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:19:19,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:19:19,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:19,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:19,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:19,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:19,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:20,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:20,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... [2019-10-15 03:19:20,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:19:20,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:19:20,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:19:20,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:19:20,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:19:20,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:19:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:19:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:19:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:19:20,098 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:19:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:19:20,099 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:19:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:19:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:19:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:19:20,101 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:19:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:19:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:19:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:19:20,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:19:20,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:19:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:19:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:19:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:19:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:19:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:19:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:19:20,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:19:20,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:19:20,107 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:19:20,108 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:19:20,108 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:19:20,108 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:19:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:19:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:19:20,109 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:19:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:19:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:19:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:19:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:19:20,110 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:19:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:19:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:19:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:19:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:19:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:19:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:19:20,111 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:19:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:19:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:19:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:19:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:19:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:19:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:19:20,112 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:19:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:19:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:19:20,113 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:19:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:19:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:19:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:19:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:19:20,114 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:19:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:19:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:19:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:19:20,115 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:19:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:19:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:19:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:19:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:19:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:19:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:19:20,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-15 03:19:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:19:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:19:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:19:20,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:19:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:19:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:19:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:19:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:19:20,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:19:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:19:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:19:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:19:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:19:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:19:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:19:20,119 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:19:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:19:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:19:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:19:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:19:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:19:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:19:20,120 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:19:20,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:19:21,625 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:19:21,626 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:19:21,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:19:21 BoogieIcfgContainer [2019-10-15 03:19:21,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:19:21,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:19:21,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:19:21,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:19:21,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:19:19" (1/3) ... [2019-10-15 03:19:21,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56df6cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:19:21, skipping insertion in model container [2019-10-15 03:19:21,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:19:19" (2/3) ... [2019-10-15 03:19:21,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56df6cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:19:21, skipping insertion in model container [2019-10-15 03:19:21,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:19:21" (3/3) ... [2019-10-15 03:19:21,640 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2019-10-15 03:19:21,652 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:19:21,662 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:19:21,675 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:19:21,708 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:19:21,708 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:19:21,709 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:19:21,709 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:19:21,710 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:19:21,710 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:19:21,711 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:19:21,711 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:19:21,732 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2019-10-15 03:19:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:19:21,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:21,745 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:21,747 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:21,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1995718927, now seen corresponding path program 1 times [2019-10-15 03:19:21,762 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:21,762 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025272664] [2019-10-15 03:19:21,762 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:21,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:21,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:22,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025272664] [2019-10-15 03:19:22,073 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:22,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:19:22,074 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583893198] [2019-10-15 03:19:22,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:19:22,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:22,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:19:22,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:19:22,096 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 2 states. [2019-10-15 03:19:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:22,136 INFO L93 Difference]: Finished difference Result 253 states and 306 transitions. [2019-10-15 03:19:22,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:19:22,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:19:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:22,151 INFO L225 Difference]: With dead ends: 253 [2019-10-15 03:19:22,152 INFO L226 Difference]: Without dead ends: 127 [2019-10-15 03:19:22,156 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:19:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-10-15 03:19:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-10-15 03:19:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-15 03:19:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2019-10-15 03:19:22,214 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 42 [2019-10-15 03:19:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:22,215 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2019-10-15 03:19:22,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:19:22,215 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2019-10-15 03:19:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:19:22,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:22,219 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:22,219 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:22,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1543283696, now seen corresponding path program 1 times [2019-10-15 03:19:22,220 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:22,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845098125] [2019-10-15 03:19:22,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:22,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845098125] [2019-10-15 03:19:22,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:22,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:19:22,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6356184] [2019-10-15 03:19:22,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:19:22,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:22,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:19:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:19:22,389 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 3 states. [2019-10-15 03:19:22,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:22,436 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2019-10-15 03:19:22,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:19:22,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:19:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:22,442 INFO L225 Difference]: With dead ends: 201 [2019-10-15 03:19:22,442 INFO L226 Difference]: Without dead ends: 119 [2019-10-15 03:19:22,447 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:19:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-10-15 03:19:22,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2019-10-15 03:19:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-15 03:19:22,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2019-10-15 03:19:22,480 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 43 [2019-10-15 03:19:22,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:22,481 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2019-10-15 03:19:22,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:19:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2019-10-15 03:19:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:19:22,485 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:22,485 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:22,485 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:22,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:22,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1849024731, now seen corresponding path program 1 times [2019-10-15 03:19:22,488 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:22,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574676886] [2019-10-15 03:19:22,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:22,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:22,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574676886] [2019-10-15 03:19:22,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:22,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:19:22,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006205954] [2019-10-15 03:19:22,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:19:22,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:19:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:19:22,703 INFO L87 Difference]: Start difference. First operand 119 states and 136 transitions. Second operand 7 states. [2019-10-15 03:19:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:23,173 INFO L93 Difference]: Finished difference Result 358 states and 424 transitions. [2019-10-15 03:19:23,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:19:23,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-10-15 03:19:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:23,181 INFO L225 Difference]: With dead ends: 358 [2019-10-15 03:19:23,181 INFO L226 Difference]: Without dead ends: 261 [2019-10-15 03:19:23,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:19:23,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-15 03:19:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2019-10-15 03:19:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-10-15 03:19:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 294 transitions. [2019-10-15 03:19:23,245 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 294 transitions. Word has length 47 [2019-10-15 03:19:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:23,245 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 294 transitions. [2019-10-15 03:19:23,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:19:23,246 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 294 transitions. [2019-10-15 03:19:23,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:19:23,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:23,253 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:23,254 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:23,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1498427456, now seen corresponding path program 1 times [2019-10-15 03:19:23,254 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:23,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323159509] [2019-10-15 03:19:23,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:23,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:23,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:23,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323159509] [2019-10-15 03:19:23,405 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:23,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:19:23,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39360878] [2019-10-15 03:19:23,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:19:23,407 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:19:23,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:19:23,407 INFO L87 Difference]: Start difference. First operand 249 states and 294 transitions. Second operand 6 states. [2019-10-15 03:19:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:23,655 INFO L93 Difference]: Finished difference Result 688 states and 831 transitions. [2019-10-15 03:19:23,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:19:23,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2019-10-15 03:19:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:23,660 INFO L225 Difference]: With dead ends: 688 [2019-10-15 03:19:23,660 INFO L226 Difference]: Without dead ends: 461 [2019-10-15 03:19:23,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:19:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-15 03:19:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 449. [2019-10-15 03:19:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2019-10-15 03:19:23,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 534 transitions. [2019-10-15 03:19:23,749 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 534 transitions. Word has length 51 [2019-10-15 03:19:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:23,750 INFO L462 AbstractCegarLoop]: Abstraction has 449 states and 534 transitions. [2019-10-15 03:19:23,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:19:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 534 transitions. [2019-10-15 03:19:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-15 03:19:23,754 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:23,754 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:23,754 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash -854929592, now seen corresponding path program 1 times [2019-10-15 03:19:23,755 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:23,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380947800] [2019-10-15 03:19:23,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:23,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:23,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:23,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380947800] [2019-10-15 03:19:23,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:19:23,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:19:23,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894958838] [2019-10-15 03:19:23,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:19:23,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:19:23,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:19:23,883 INFO L87 Difference]: Start difference. First operand 449 states and 534 transitions. Second operand 7 states. [2019-10-15 03:19:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:24,476 INFO L93 Difference]: Finished difference Result 1179 states and 1520 transitions. [2019-10-15 03:19:24,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:19:24,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2019-10-15 03:19:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:24,482 INFO L225 Difference]: With dead ends: 1179 [2019-10-15 03:19:24,483 INFO L226 Difference]: Without dead ends: 752 [2019-10-15 03:19:24,485 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:19:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-15 03:19:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 663. [2019-10-15 03:19:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2019-10-15 03:19:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 789 transitions. [2019-10-15 03:19:24,570 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 789 transitions. Word has length 54 [2019-10-15 03:19:24,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:24,571 INFO L462 AbstractCegarLoop]: Abstraction has 663 states and 789 transitions. [2019-10-15 03:19:24,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:19:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 789 transitions. [2019-10-15 03:19:24,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-15 03:19:24,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:24,574 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:24,574 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:24,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:24,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1591472147, now seen corresponding path program 1 times [2019-10-15 03:19:24,575 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:24,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794521482] [2019-10-15 03:19:24,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:24,575 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:24,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:19:24,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794521482] [2019-10-15 03:19:24,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008039442] [2019-10-15 03:19:24,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:25,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:19:25,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:19:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:19:25,218 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:19:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:19:25,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:19:25,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 11] total 23 [2019-10-15 03:19:25,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373136227] [2019-10-15 03:19:25,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:19:25,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:25,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:19:25,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:19:25,776 INFO L87 Difference]: Start difference. First operand 663 states and 789 transitions. Second operand 11 states. [2019-10-15 03:19:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:26,531 INFO L93 Difference]: Finished difference Result 1591 states and 1975 transitions. [2019-10-15 03:19:26,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:19:26,531 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2019-10-15 03:19:26,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:26,540 INFO L225 Difference]: With dead ends: 1591 [2019-10-15 03:19:26,540 INFO L226 Difference]: Without dead ends: 950 [2019-10-15 03:19:26,543 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2019-10-15 03:19:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-10-15 03:19:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 930. [2019-10-15 03:19:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2019-10-15 03:19:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1118 transitions. [2019-10-15 03:19:26,611 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1118 transitions. Word has length 85 [2019-10-15 03:19:26,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:26,614 INFO L462 AbstractCegarLoop]: Abstraction has 930 states and 1118 transitions. [2019-10-15 03:19:26,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 03:19:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1118 transitions. [2019-10-15 03:19:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-15 03:19:26,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:26,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:26,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:26,833 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash -857534902, now seen corresponding path program 1 times [2019-10-15 03:19:26,834 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:26,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953422578] [2019-10-15 03:19:26,835 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:26,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:26,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:19:27,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953422578] [2019-10-15 03:19:27,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547400465] [2019-10-15 03:19:27,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:27,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:19:27,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:19:27,618 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:27,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:27,702 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:19:27,776 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:19:28,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:29,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:29,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:29,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 03:19:29,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:19:29,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-15 03:19:29,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35214832] [2019-10-15 03:19:29,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:19:29,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:19:29,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:19:29,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:19:29,320 INFO L87 Difference]: Start difference. First operand 930 states and 1118 transitions. Second operand 14 states. [2019-10-15 03:19:31,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:19:31,670 INFO L93 Difference]: Finished difference Result 2679 states and 3364 transitions. [2019-10-15 03:19:31,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-15 03:19:31,671 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2019-10-15 03:19:31,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:19:31,682 INFO L225 Difference]: With dead ends: 2679 [2019-10-15 03:19:31,683 INFO L226 Difference]: Without dead ends: 1771 [2019-10-15 03:19:31,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 241 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-10-15 03:19:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2019-10-15 03:19:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1659. [2019-10-15 03:19:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2019-10-15 03:19:31,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2013 transitions. [2019-10-15 03:19:31,797 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2013 transitions. Word has length 132 [2019-10-15 03:19:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:19:31,798 INFO L462 AbstractCegarLoop]: Abstraction has 1659 states and 2013 transitions. [2019-10-15 03:19:31,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:19:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2013 transitions. [2019-10-15 03:19:31,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 03:19:31,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:19:31,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:19:32,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:32,017 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:19:32,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:19:32,017 INFO L82 PathProgramCache]: Analyzing trace with hash -155037944, now seen corresponding path program 1 times [2019-10-15 03:19:32,018 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:19:32,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042199305] [2019-10-15 03:19:32,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:32,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:19:32,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:19:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:19:32,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042199305] [2019-10-15 03:19:32,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591882291] [2019-10-15 03:19:32,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:19:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:19:32,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-15 03:19:32,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:19:32,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:19:32,921 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:19:33,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,350 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:19:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:19:33,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [229848452] [2019-10-15 03:19:33,833 INFO L162 IcfgInterpreter]: Started Sifa with 107 locations of interest [2019-10-15 03:19:33,833 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:19:33,840 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:19:33,847 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:19:33,848 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:19:42,992 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:19:44,581 WARN L191 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:19:44,717 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:19:44,845 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:19:44,971 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:19:45,213 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:45,401 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:45,617 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:45,818 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,160 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:19:46,338 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,476 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,608 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,711 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,829 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:19:46,837 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:19:47,027 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-15 03:19:47,110 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-15 03:19:47,217 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:47,353 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:47,477 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:47,629 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:47,740 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:47,883 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:48,032 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:48,134 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:48,255 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:48,492 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-15 03:19:48,718 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:48,832 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:49,070 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:49,173 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:49,278 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:49,396 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:49,726 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:49,850 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,071 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:50,181 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,284 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,401 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:50,619 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:50,738 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,054 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,266 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:51,401 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,524 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:51,633 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:19:51,750 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,890 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:51,998 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,119 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,316 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:19:52,440 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,567 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,676 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,787 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:52,910 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:53,036 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:53,147 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:53,274 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:53,597 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-15 03:19:53,708 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:53,966 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,180 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,297 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,416 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:54,530 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:19:54,641 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:19:54,779 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:19:54,893 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:55,006 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:55,149 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:55,290 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:55,404 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:55,526 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:55,759 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-15 03:19:55,887 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:56,153 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:56,393 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:56,525 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:56,646 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:19:56,882 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:19:57,004 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:57,130 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:57,340 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:19:57,447 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:57,564 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:57,670 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:57,778 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:57,897 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:19:58,109 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-15 03:19:58,219 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:19:58,374 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 560