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_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:01,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:01,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:01,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:01,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:01,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:01,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:01,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:01,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:01,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:01,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:01,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:01,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:01,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:01,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:01,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:01,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:01,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:01,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:01,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:01,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:01,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:01,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:01,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:01,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:01,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:01,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:01,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:01,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:01,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:01,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:01,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:01,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:01,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:01,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:01,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:01,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:01,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:01,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:01,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:01,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:01,958 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 03:23:01,985 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:01,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:01,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:01,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:01,990 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:01,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:01,990 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:01,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:01,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:01,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:01,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:01,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:01,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:01,992 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:01,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:01,993 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:01,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:01,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:01,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:01,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:01,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:01,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:01,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:01,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:01,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:01,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:01,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:01,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:01,998 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 03:23:02,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:02,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:02,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:02,276 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:02,276 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:02,277 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2019-10-15 03:23:02,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c457137b/4217902528fd4a31af166facb8849af9/FLAGa972efbc9 [2019-10-15 03:23:02,900 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:02,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2019-10-15 03:23:02,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c457137b/4217902528fd4a31af166facb8849af9/FLAGa972efbc9 [2019-10-15 03:23:03,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c457137b/4217902528fd4a31af166facb8849af9 [2019-10-15 03:23:03,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:03,171 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:03,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:03,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:03,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:03,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f5f185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03, skipping insertion in model container [2019-10-15 03:23:03,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,184 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:03,225 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:03,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:03,713 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:03,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:03,834 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:03,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03 WrapperNode [2019-10-15 03:23:03,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:03,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:03,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:03,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:03,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (1/1) ... [2019-10-15 03:23:03,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:03,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:03,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:03,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:03,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (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 03:23:03,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:03,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:03,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:03,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:03,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:03,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:03,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:03,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:03,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:03,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:03,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:03,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:03,999 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:03,999 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:04,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:04,001 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:23:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-15 03:23:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:04,002 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:23:04,003 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:04,004 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:04,005 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:04,006 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:04,007 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:04,008 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:04,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:04,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:04,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:04,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:04,012 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:23:04,013 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:23:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-15 03:23:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:04,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:04,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:05,812 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:05,813 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:05,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:05 BoogieIcfgContainer [2019-10-15 03:23:05,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:05,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:05,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:05,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:05,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:03" (1/3) ... [2019-10-15 03:23:05,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f30b6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:05, skipping insertion in model container [2019-10-15 03:23:05,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:03" (2/3) ... [2019-10-15 03:23:05,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f30b6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:05, skipping insertion in model container [2019-10-15 03:23:05,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:05" (3/3) ... [2019-10-15 03:23:05,823 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.c [2019-10-15 03:23:05,834 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:05,843 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:05,855 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:05,883 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:05,883 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:05,883 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:05,883 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:05,884 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:05,884 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:05,884 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:05,884 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:05,908 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2019-10-15 03:23:05,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:05,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:05,921 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] [2019-10-15 03:23:05,923 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:05,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1250401890, now seen corresponding path program 1 times [2019-10-15 03:23:05,939 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:05,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916934087] [2019-10-15 03:23:05,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:05,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:05,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:06,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916934087] [2019-10-15 03:23:06,290 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:06,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:06,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823783566] [2019-10-15 03:23:06,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:06,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:06,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:06,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:06,318 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 2 states. [2019-10-15 03:23:06,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:06,366 INFO L93 Difference]: Finished difference Result 246 states and 297 transitions. [2019-10-15 03:23:06,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:06,368 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:06,387 INFO L225 Difference]: With dead ends: 246 [2019-10-15 03:23:06,387 INFO L226 Difference]: Without dead ends: 125 [2019-10-15 03:23:06,399 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 03:23:06,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-15 03:23:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-10-15 03:23:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-15 03:23:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2019-10-15 03:23:06,510 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 52 [2019-10-15 03:23:06,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:06,511 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2019-10-15 03:23:06,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2019-10-15 03:23:06,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:06,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:06,524 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] [2019-10-15 03:23:06,524 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash 186454401, now seen corresponding path program 1 times [2019-10-15 03:23:06,526 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:06,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166391252] [2019-10-15 03:23:06,527 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:06,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:06,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:06,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166391252] [2019-10-15 03:23:06,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:06,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:06,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78295580] [2019-10-15 03:23:06,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:06,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:06,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:06,749 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand 3 states. [2019-10-15 03:23:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:06,796 INFO L93 Difference]: Finished difference Result 200 states and 231 transitions. [2019-10-15 03:23:06,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:06,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:06,801 INFO L225 Difference]: With dead ends: 200 [2019-10-15 03:23:06,802 INFO L226 Difference]: Without dead ends: 117 [2019-10-15 03:23:06,832 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 03:23:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-15 03:23:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2019-10-15 03:23:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-15 03:23:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2019-10-15 03:23:06,855 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 53 [2019-10-15 03:23:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:06,855 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2019-10-15 03:23:06,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2019-10-15 03:23:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:23:06,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:06,858 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] [2019-10-15 03:23:06,858 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:06,859 INFO L82 PathProgramCache]: Analyzing trace with hash -731827665, now seen corresponding path program 1 times [2019-10-15 03:23:06,859 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:06,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436270223] [2019-10-15 03:23:06,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:06,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:06,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:07,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436270223] [2019-10-15 03:23:07,008 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:07,008 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:07,009 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746052718] [2019-10-15 03:23:07,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:07,009 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:07,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:07,010 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand 7 states. [2019-10-15 03:23:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:07,407 INFO L93 Difference]: Finished difference Result 209 states and 242 transitions. [2019-10-15 03:23:07,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:23:07,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-15 03:23:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:07,409 INFO L225 Difference]: With dead ends: 209 [2019-10-15 03:23:07,410 INFO L226 Difference]: Without dead ends: 117 [2019-10-15 03:23:07,412 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 03:23:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-15 03:23:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2019-10-15 03:23:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-15 03:23:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2019-10-15 03:23:07,439 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 56 [2019-10-15 03:23:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:07,444 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2019-10-15 03:23:07,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2019-10-15 03:23:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-15 03:23:07,449 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:07,449 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] [2019-10-15 03:23:07,450 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:07,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1459374133, now seen corresponding path program 1 times [2019-10-15 03:23:07,451 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:07,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144172585] [2019-10-15 03:23:07,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:07,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:07,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:07,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144172585] [2019-10-15 03:23:07,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:07,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:23:07,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584489741] [2019-10-15 03:23:07,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:23:07,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:07,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:23:07,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:23:07,565 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand 5 states. [2019-10-15 03:23:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:08,174 INFO L93 Difference]: Finished difference Result 311 states and 367 transitions. [2019-10-15 03:23:08,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:08,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2019-10-15 03:23:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:08,177 INFO L225 Difference]: With dead ends: 311 [2019-10-15 03:23:08,178 INFO L226 Difference]: Without dead ends: 219 [2019-10-15 03:23:08,179 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:23:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2019-10-15 03:23:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 202. [2019-10-15 03:23:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-10-15 03:23:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2019-10-15 03:23:08,203 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 69 [2019-10-15 03:23:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:08,203 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2019-10-15 03:23:08,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:23:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2019-10-15 03:23:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-15 03:23:08,205 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:08,205 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] [2019-10-15 03:23:08,205 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash -20244775, now seen corresponding path program 1 times [2019-10-15 03:23:08,206 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:08,206 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819056467] [2019-10-15 03:23:08,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:08,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:08,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:08,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819056467] [2019-10-15 03:23:08,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:08,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:08,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687457759] [2019-10-15 03:23:08,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:08,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:08,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:08,360 INFO L87 Difference]: Start difference. First operand 202 states and 225 transitions. Second operand 7 states. [2019-10-15 03:23:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:08,987 INFO L93 Difference]: Finished difference Result 395 states and 455 transitions. [2019-10-15 03:23:08,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:08,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-15 03:23:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:08,991 INFO L225 Difference]: With dead ends: 395 [2019-10-15 03:23:08,991 INFO L226 Difference]: Without dead ends: 218 [2019-10-15 03:23:08,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:23:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2019-10-15 03:23:09,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 201. [2019-10-15 03:23:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2019-10-15 03:23:09,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 222 transitions. [2019-10-15 03:23:09,011 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 222 transitions. Word has length 78 [2019-10-15 03:23:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:09,011 INFO L462 AbstractCegarLoop]: Abstraction has 201 states and 222 transitions. [2019-10-15 03:23:09,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:09,011 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 222 transitions. [2019-10-15 03:23:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-10-15 03:23:09,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:09,013 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:09,013 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:09,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1226535836, now seen corresponding path program 1 times [2019-10-15 03:23:09,014 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:09,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031400668] [2019-10-15 03:23:09,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:09,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:09,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:09,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031400668] [2019-10-15 03:23:09,265 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:09,265 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:09,266 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415119892] [2019-10-15 03:23:09,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:09,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:09,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:09,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:09,267 INFO L87 Difference]: Start difference. First operand 201 states and 222 transitions. Second operand 12 states. [2019-10-15 03:23:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:10,329 INFO L93 Difference]: Finished difference Result 526 states and 603 transitions. [2019-10-15 03:23:10,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:10,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2019-10-15 03:23:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:10,334 INFO L225 Difference]: With dead ends: 526 [2019-10-15 03:23:10,334 INFO L226 Difference]: Without dead ends: 350 [2019-10-15 03:23:10,335 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 [2019-10-15 03:23:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-10-15 03:23:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 341. [2019-10-15 03:23:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-10-15 03:23:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 388 transitions. [2019-10-15 03:23:10,364 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 388 transitions. Word has length 91 [2019-10-15 03:23:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:10,364 INFO L462 AbstractCegarLoop]: Abstraction has 341 states and 388 transitions. [2019-10-15 03:23:10,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 388 transitions. [2019-10-15 03:23:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 03:23:10,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:10,367 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:10,367 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:10,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:10,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1624802779, now seen corresponding path program 1 times [2019-10-15 03:23:10,368 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:10,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525851479] [2019-10-15 03:23:10,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:10,369 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:10,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:10,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:10,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525851479] [2019-10-15 03:23:10,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:10,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:10,505 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838309204] [2019-10-15 03:23:10,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:10,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:10,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:10,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:10,506 INFO L87 Difference]: Start difference. First operand 341 states and 388 transitions. Second operand 9 states. [2019-10-15 03:23:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:11,464 INFO L93 Difference]: Finished difference Result 1059 states and 1240 transitions. [2019-10-15 03:23:11,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:11,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2019-10-15 03:23:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:11,473 INFO L225 Difference]: With dead ends: 1059 [2019-10-15 03:23:11,473 INFO L226 Difference]: Without dead ends: 804 [2019-10-15 03:23:11,474 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 [2019-10-15 03:23:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2019-10-15 03:23:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 699. [2019-10-15 03:23:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2019-10-15 03:23:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 802 transitions. [2019-10-15 03:23:11,530 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 802 transitions. Word has length 94 [2019-10-15 03:23:11,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:11,531 INFO L462 AbstractCegarLoop]: Abstraction has 699 states and 802 transitions. [2019-10-15 03:23:11,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 802 transitions. [2019-10-15 03:23:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:23:11,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:11,534 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, 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] [2019-10-15 03:23:11,535 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:11,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:11,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1585837824, now seen corresponding path program 1 times [2019-10-15 03:23:11,535 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:11,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038360746] [2019-10-15 03:23:11,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:11,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:11,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:23:11,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038360746] [2019-10-15 03:23:11,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126408651] [2019-10-15 03:23:11,716 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 03:23:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:11,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:11,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:12,148 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-15 03:23:12,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [290152088] [2019-10-15 03:23:12,601 INFO L162 IcfgInterpreter]: Started Sifa with 107 locations of interest [2019-10-15 03:23:12,601 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:12,609 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:12,617 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:12,618 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:23:22,150 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:23:24,052 WARN L191 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:23:24,210 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:24,342 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:24,477 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:24,789 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:25,013 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:25,241 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:25,530 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:25,898 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:23:26,138 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:26,321 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:26,488 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:26,667 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:26,865 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:26,875 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:23:27,080 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:23:27,203 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:27,342 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:27,487 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:27,598 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:27,870 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:27,999 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:28,231 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:28,481 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:23:28,592 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:28,802 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:28,916 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:29,172 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:29,373 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:29,497 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:29,600 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:29,710 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:29,852 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:30,052 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:30,179 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:30,285 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:30,399 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:30,546 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:30,870 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:31,205 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:31,307 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:31,530 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:31,849 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:32,023 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:32,135 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:32,262 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:32,483 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:32,599 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:32,734 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:32,856 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:32,968 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:33,089 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:33,254 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:33,373 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:33,509 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:33,745 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:23:33,875 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:34,134 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:34,376 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:23:34,490 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:34,621 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:34,743 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:34,862 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:23:34,996 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:35,116 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:35,230 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:35,359 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:23:35,503 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:35,616 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:35,746 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:23:36,112 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:23:36,232 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:36,408 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:23:36,520 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:36,631 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:36,756 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:23:37,011 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:37,123 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:37,261 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:37,467 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:37,580 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:37,703 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:37,814 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:37,948 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:38,089 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:38,311 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:23:38,425 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:38,554 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:38,773 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:23:38,892 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:39,028 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:39,142 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:39,257 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:39,381 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:39,588 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-15 03:23:39,701 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:39,827 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:23:40,039 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-15 03:23:40,154 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:23:40,286 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:23:40,505 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:40,627 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:40,751 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:40,955 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:41,072 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:41,199 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:41,315 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:41,428 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:41,550 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:41,764 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:41,877 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:42,001 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:42,214 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:23:42,323 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:42,446 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:42,555 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:42,667 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:42,795 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:43,022 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568