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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:18:50,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:18:50,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:18:50,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:18:50,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:18:50,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:18:50,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:18:50,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:18:50,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:18:50,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:18:50,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:18:50,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:18:50,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:18:50,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:18:50,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:18:50,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:18:50,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:18:50,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:18:50,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:18:50,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:18:50,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:18:50,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:18:50,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:18:50,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:18:50,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:18:50,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:18:50,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:18:50,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:18:50,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:18:50,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:18:50,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:18:50,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:18:50,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:18:50,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:18:50,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:18:50,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:18:50,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:18:50,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:18:50,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:18:50,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:18:50,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:18:50,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:18:50,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:18:50,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:18:50,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:18:50,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:18:50,141 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:18:50,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:18:50,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:18:50,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:18:50,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:18:50,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:18:50,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:18:50,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:18:50,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:18:50,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:18:50,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:18:50,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:18:50,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:18:50,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:18:50,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:18:50,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:18:50,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:18:50,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:50,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:18:50,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:18:50,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:18:50,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:18:50,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:18:50,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:18:50,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:18:50,422 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:18:50,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:18:50,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:18:50,448 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:18:50,448 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:18:50,449 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2019-10-13 23:18:50,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665540616/18f317db4bc247c59dc4dbcafbbddb49/FLAG8fe8d1cc2 [2019-10-13 23:18:51,174 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:18:51,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2019-10-13 23:18:51,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665540616/18f317db4bc247c59dc4dbcafbbddb49/FLAG8fe8d1cc2 [2019-10-13 23:18:51,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665540616/18f317db4bc247c59dc4dbcafbbddb49 [2019-10-13 23:18:51,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:18:51,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:18:51,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:51,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:18:51,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:18:51,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4554b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:51, skipping insertion in model container [2019-10-13 23:18:51,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:51" (1/1) ... [2019-10-13 23:18:51,498 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:18:51,559 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:18:51,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:52,018 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:18:52,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:52,227 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:18:52,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52 WrapperNode [2019-10-13 23:18:52,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:52,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:18:52,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:18:52,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:18:52,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... [2019-10-13 23:18:52,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:18:52,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:18:52,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:18:52,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:18:52,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:52,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:18:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:18:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:18:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:18:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:18:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:18:52,407 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:18:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:18:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:18:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:18:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:18:52,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:18:52,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:18:52,409 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:18:52,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:18:52,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:18:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:18:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:18:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:18:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:18:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:18:52,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:52,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:52,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:52,411 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:18:52,411 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:18:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:18:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:18:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:18:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:18:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:18:52,412 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:18:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:18:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:18:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:18:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:18:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:18:52,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:18:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:18:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:18:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:18:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:18:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:18:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:18:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:18:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:18:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:18:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:18:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:18:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:18:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-13 23:18:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:18:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:18:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:18:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:18:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:18:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:18:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:18:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:18:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:18:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:18:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:18:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:18:54,124 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:18:54,125 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:18:54,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:54 BoogieIcfgContainer [2019-10-13 23:18:54,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:18:54,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:18:54,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:18:54,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:18:54,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:51" (1/3) ... [2019-10-13 23:18:54,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dc635a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:54, skipping insertion in model container [2019-10-13 23:18:54,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:52" (2/3) ... [2019-10-13 23:18:54,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dc635a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:54, skipping insertion in model container [2019-10-13 23:18:54,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:54" (3/3) ... [2019-10-13 23:18:54,136 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2019-10-13 23:18:54,147 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:18:54,157 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:18:54,170 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:18:54,205 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:18:54,205 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:18:54,205 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:18:54,205 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:18:54,206 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:18:54,206 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:18:54,206 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:18:54,206 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:18:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2019-10-13 23:18:54,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:18:54,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,258 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:54,262 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1858823632, now seen corresponding path program 1 times [2019-10-13 23:18:54,282 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,283 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848730643] [2019-10-13 23:18:54,284 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:54,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848730643] [2019-10-13 23:18:54,700 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:54,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:18:54,701 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395515108] [2019-10-13 23:18:54,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:18:54,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:54,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:18:54,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:54,724 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 2 states. [2019-10-13 23:18:54,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:54,770 INFO L93 Difference]: Finished difference Result 256 states and 309 transitions. [2019-10-13 23:18:54,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:18:54,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:18:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:54,786 INFO L225 Difference]: With dead ends: 256 [2019-10-13 23:18:54,786 INFO L226 Difference]: Without dead ends: 130 [2019-10-13 23:18:54,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:54,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-13 23:18:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-10-13 23:18:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 23:18:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 150 transitions. [2019-10-13 23:18:54,855 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 150 transitions. Word has length 52 [2019-10-13 23:18:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:54,856 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 150 transitions. [2019-10-13 23:18:54,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:18:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 150 transitions. [2019-10-13 23:18:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:18:54,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,861 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:54,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1915705651, now seen corresponding path program 1 times [2019-10-13 23:18:54,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341863517] [2019-10-13 23:18:54,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,863 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341863517] [2019-10-13 23:18:55,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:18:55,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474084911] [2019-10-13 23:18:55,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:18:55,019 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:18:55,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:55,020 INFO L87 Difference]: Start difference. First operand 130 states and 150 transitions. Second operand 3 states. [2019-10-13 23:18:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,047 INFO L93 Difference]: Finished difference Result 214 states and 248 transitions. [2019-10-13 23:18:55,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:18:55,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:18:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,050 INFO L225 Difference]: With dead ends: 214 [2019-10-13 23:18:55,051 INFO L226 Difference]: Without dead ends: 122 [2019-10-13 23:18:55,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-10-13 23:18:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-10-13 23:18:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-13 23:18:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2019-10-13 23:18:55,070 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 53 [2019-10-13 23:18:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,071 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2019-10-13 23:18:55,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:18:55,071 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2019-10-13 23:18:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 23:18:55,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,074 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] [2019-10-13 23:18:55,074 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,075 INFO L82 PathProgramCache]: Analyzing trace with hash 197549147, now seen corresponding path program 1 times [2019-10-13 23:18:55,075 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293684398] [2019-10-13 23:18:55,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293684398] [2019-10-13 23:18:55,241 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:55,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554524411] [2019-10-13 23:18:55,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:55,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:55,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:55,243 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand 7 states. [2019-10-13 23:18:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,602 INFO L93 Difference]: Finished difference Result 219 states and 254 transitions. [2019-10-13 23:18:55,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:18:55,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-10-13 23:18:55,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,605 INFO L225 Difference]: With dead ends: 219 [2019-10-13 23:18:55,605 INFO L226 Difference]: Without dead ends: 122 [2019-10-13 23:18:55,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-13 23:18:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-10-13 23:18:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-10-13 23:18:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-13 23:18:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2019-10-13 23:18:55,622 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 55 [2019-10-13 23:18:55,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,624 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2019-10-13 23:18:55,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2019-10-13 23:18:55,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 23:18:55,628 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,628 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] [2019-10-13 23:18:55,628 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1962341455, now seen corresponding path program 1 times [2019-10-13 23:18:55,629 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976028017] [2019-10-13 23:18:55,629 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:55,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976028017] [2019-10-13 23:18:55,746 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:55,746 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:18:55,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590332270] [2019-10-13 23:18:55,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:18:55,747 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:55,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:18:55,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:18:55,748 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand 5 states. [2019-10-13 23:18:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:56,372 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2019-10-13 23:18:56,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:18:56,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-10-13 23:18:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:56,375 INFO L225 Difference]: With dead ends: 315 [2019-10-13 23:18:56,375 INFO L226 Difference]: Without dead ends: 218 [2019-10-13 23:18:56,377 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:18:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2019-10-13 23:18:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 203. [2019-10-13 23:18:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2019-10-13 23:18:56,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 225 transitions. [2019-10-13 23:18:56,402 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 225 transitions. Word has length 72 [2019-10-13 23:18:56,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:56,403 INFO L462 AbstractCegarLoop]: Abstraction has 203 states and 225 transitions. [2019-10-13 23:18:56,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:18:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 225 transitions. [2019-10-13 23:18:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 23:18:56,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:56,406 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] [2019-10-13 23:18:56,406 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1605617855, now seen corresponding path program 1 times [2019-10-13 23:18:56,407 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:56,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401488792] [2019-10-13 23:18:56,407 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:56,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:56,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401488792] [2019-10-13 23:18:56,710 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:56,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:18:56,710 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884898927] [2019-10-13 23:18:56,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:18:56,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:18:56,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:18:56,712 INFO L87 Difference]: Start difference. First operand 203 states and 225 transitions. Second operand 12 states. [2019-10-13 23:18:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:57,787 INFO L93 Difference]: Finished difference Result 533 states and 607 transitions. [2019-10-13 23:18:57,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:18:57,787 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2019-10-13 23:18:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:57,796 INFO L225 Difference]: With dead ends: 533 [2019-10-13 23:18:57,796 INFO L226 Difference]: Without dead ends: 355 [2019-10-13 23:18:57,798 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2019-10-13 23:18:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 343. [2019-10-13 23:18:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-13 23:18:57,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 389 transitions. [2019-10-13 23:18:57,860 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 389 transitions. Word has length 82 [2019-10-13 23:18:57,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:57,861 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 389 transitions. [2019-10-13 23:18:57,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:18:57,861 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 389 transitions. [2019-10-13 23:18:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-13 23:18:57,863 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:57,863 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] [2019-10-13 23:18:57,864 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:57,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:57,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1607212558, now seen corresponding path program 1 times [2019-10-13 23:18:57,864 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:57,865 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733831070] [2019-10-13 23:18:57,865 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,865 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:57,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:18:57,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733831070] [2019-10-13 23:18:57,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:57,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:57,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333699308] [2019-10-13 23:18:57,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:57,995 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:57,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:57,996 INFO L87 Difference]: Start difference. First operand 343 states and 389 transitions. Second operand 7 states. [2019-10-13 23:18:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:58,676 INFO L93 Difference]: Finished difference Result 685 states and 799 transitions. [2019-10-13 23:18:58,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:18:58,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2019-10-13 23:18:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:58,680 INFO L225 Difference]: With dead ends: 685 [2019-10-13 23:18:58,681 INFO L226 Difference]: Without dead ends: 367 [2019-10-13 23:18:58,682 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:18:58,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2019-10-13 23:18:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 340. [2019-10-13 23:18:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2019-10-13 23:18:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 380 transitions. [2019-10-13 23:18:58,718 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 380 transitions. Word has length 82 [2019-10-13 23:18:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:58,719 INFO L462 AbstractCegarLoop]: Abstraction has 340 states and 380 transitions. [2019-10-13 23:18:58,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 380 transitions. [2019-10-13 23:18:58,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 23:18:58,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:58,721 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] [2019-10-13 23:18:58,721 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:58,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:58,722 INFO L82 PathProgramCache]: Analyzing trace with hash -291312043, now seen corresponding path program 1 times [2019-10-13 23:18:58,722 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:58,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731740825] [2019-10-13 23:18:58,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:58,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:18:58,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731740825] [2019-10-13 23:18:58,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:58,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:18:58,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538343921] [2019-10-13 23:18:58,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:18:58,973 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:58,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:18:58,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:18:58,974 INFO L87 Difference]: Start difference. First operand 340 states and 380 transitions. Second operand 9 states. [2019-10-13 23:18:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:59,868 INFO L93 Difference]: Finished difference Result 1035 states and 1187 transitions. [2019-10-13 23:18:59,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:18:59,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2019-10-13 23:18:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:59,874 INFO L225 Difference]: With dead ends: 1035 [2019-10-13 23:18:59,875 INFO L226 Difference]: Without dead ends: 782 [2019-10-13 23:18:59,876 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2019-10-13 23:18:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 680. [2019-10-13 23:18:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2019-10-13 23:18:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 767 transitions. [2019-10-13 23:18:59,938 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 767 transitions. Word has length 85 [2019-10-13 23:18:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:59,942 INFO L462 AbstractCegarLoop]: Abstraction has 680 states and 767 transitions. [2019-10-13 23:18:59,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:18:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 767 transitions. [2019-10-13 23:18:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 23:18:59,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:59,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:18:59,956 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:59,957 INFO L82 PathProgramCache]: Analyzing trace with hash -785132374, now seen corresponding path program 1 times [2019-10-13 23:18:59,957 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:59,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029305264] [2019-10-13 23:18:59,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:59,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:59,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:19:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:19:00,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029305264] [2019-10-13 23:19:00,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998540064] [2019-10-13 23:19:00,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:19:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:19:00,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:19:00,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:19:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:19:00,552 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:19:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 23:19:01,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [736473237] [2019-10-13 23:19:01,045 INFO L162 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-10-13 23:19:01,045 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:19:01,053 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:19:01,061 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:19:01,062 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:10,602 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:12,380 WARN L191 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:12,524 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:12,749 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:12,961 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:13,360 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,625 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:13,885 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,107 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:14,622 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:14,906 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,140 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,285 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,437 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,588 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:15,599 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:15,854 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:15,974 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,097 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,257 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:16,384 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,495 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,627 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:16,781 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,891 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,011 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:17,209 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 546 [2019-10-13 23:19:17,322 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,587 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:17,707 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,925 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:18,267 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:18,488 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:18,618 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:18,981 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:19,298 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:19,616 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:19,740 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:19,955 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:20,269 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:20,492 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:20,634 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:20,807 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:20,919 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:21,065 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:21,279 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:19:21,389 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:21,528 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:21,638 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:21,747 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:21,866 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:22,016 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:19:22,128 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:19:22,249 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,502 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:22,627 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,754 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:22,966 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-13 23:19:23,077 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:19:23,197 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,310 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:19:23,421 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:19:23,557 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,667 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,778 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,902 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:24,045 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:24,156 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:24,279 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:24,472 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-13 23:19:24,607 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:24,748 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:24,861 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:24,973 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:25,099 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:25,341 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:19:25,452 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:25,576 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:25,780 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:19:25,892 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:26,015 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:26,125 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:26,236 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:26,385 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:26,600 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:26,715 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,861 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,083 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:27,197 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,327 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,441 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,553 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,675 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,874 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 562 [2019-10-13 23:19:27,991 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-13 23:19:28,183 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,380 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 564 [2019-10-13 23:19:28,493 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,625 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:28,841 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:19:28,952 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:29,076 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:29,308 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:19:29,419 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:29,547 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:29,658 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:29,769 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:29,888 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:30,102 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:19:30,214 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:30,334 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:30,541 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:19:30,651 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:30,772 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:30,898 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:31,009 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:31,130 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:19:31,347 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564