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_spec4_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:21:34,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:21:34,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:21:34,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:21:34,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:21:34,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:21:34,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:21:34,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:21:34,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:21:34,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:21:34,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:21:34,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:21:34,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:21:34,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:21:34,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:21:34,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:21:34,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:21:34,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:21:34,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:21:34,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:21:34,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:21:34,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:21:34,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:21:34,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:21:34,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:21:34,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:21:34,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:21:34,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:21:34,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:21:34,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:21:34,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:21:34,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:21:34,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:21:34,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:21:34,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:21:34,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:21:34,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:21:34,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:21:34,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:21:34,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:21:34,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:21:34,254 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 03:21:34,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:21:34,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:21:34,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:21:34,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:21:34,273 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:21:34,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:21:34,273 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:21:34,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:21:34,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:21:34,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:21:34,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:21:34,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:21:34,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:21:34,275 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:21:34,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:21:34,275 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:21:34,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:21:34,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:21:34,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:21:34,276 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:21:34,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:21:34,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:21:34,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:21:34,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:21:34,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:21:34,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:21:34,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:21:34,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:21:34,278 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 03:21:34,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:21:34,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:21:34,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:21:34,550 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:21:34,550 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:21:34,551 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2019-10-15 03:21:34,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c140392/e86bc8fe2c184d2f8d38111423e23429/FLAGa30b7e146 [2019-10-15 03:21:35,141 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:21:35,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product50.cil.c [2019-10-15 03:21:35,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c140392/e86bc8fe2c184d2f8d38111423e23429/FLAGa30b7e146 [2019-10-15 03:21:35,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c140392/e86bc8fe2c184d2f8d38111423e23429 [2019-10-15 03:21:35,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:21:35,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:21:35,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:35,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:21:35,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:21:35,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:35" (1/1) ... [2019-10-15 03:21:35,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ae5ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:35, skipping insertion in model container [2019-10-15 03:21:35,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:35" (1/1) ... [2019-10-15 03:21:35,499 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:21:35,557 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:21:35,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:36,009 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:21:36,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:36,164 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:21:36,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36 WrapperNode [2019-10-15 03:21:36,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:36,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:21:36,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:21:36,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:21:36,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (1/1) ... [2019-10-15 03:21:36,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (1/1) ... [2019-10-15 03:21:36,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (1/1) ... [2019-10-15 03:21:36,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (1/1) ... [2019-10-15 03:21:36,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (1/1) ... [2019-10-15 03:21:36,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (1/1) ... [2019-10-15 03:21:36,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (1/1) ... [2019-10-15 03:21:36,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:21:36,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:21:36,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:21:36,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:21:36,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (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 03:21:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:21:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:21:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:36,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:21:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:21:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:21:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:21:36,316 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:21:36,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:21:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:21:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:21:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:21:36,319 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:21:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:21:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:21:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:21:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:21:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:21:36,320 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:21:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:21:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:21:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:21:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:21:36,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:21:36,322 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:21:36,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:21:36,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:21:36,323 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:21:36,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:21:36,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:21:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:21:36,324 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:21:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:21:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:21:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:21:36,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:21:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:21:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:21:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:21:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:21:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:21:36,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:21:36,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:36,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:21:36,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:36,326 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:36,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:21:36,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:21:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:21:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:21:36,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:21:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:21:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:21:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:21:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:21:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:21:36,328 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:21:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:21:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:21:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:21:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:21:36,329 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:21:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:21:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:21:36,330 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:21:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:21:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:21:36,331 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:21:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:21:36,332 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:21:36,333 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:21:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:21:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:21:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:21:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:21:36,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:21:36,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:21:37,871 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:21:37,871 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:21:37,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:37 BoogieIcfgContainer [2019-10-15 03:21:37,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:21:37,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:21:37,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:21:37,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:21:37,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:21:35" (1/3) ... [2019-10-15 03:21:37,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1952aca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:37, skipping insertion in model container [2019-10-15 03:21:37,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:36" (2/3) ... [2019-10-15 03:21:37,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1952aca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:37, skipping insertion in model container [2019-10-15 03:21:37,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:37" (3/3) ... [2019-10-15 03:21:37,884 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product50.cil.c [2019-10-15 03:21:37,895 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:21:37,905 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:21:37,919 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:21:37,953 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:21:37,954 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:21:37,954 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:21:37,954 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:21:37,954 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:21:37,954 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:21:37,955 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:21:37,955 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:21:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states. [2019-10-15 03:21:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:21:38,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:38,002 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:38,006 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:38,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1855036009, now seen corresponding path program 1 times [2019-10-15 03:21:38,023 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:38,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301366550] [2019-10-15 03:21:38,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:38,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:38,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:38,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301366550] [2019-10-15 03:21:38,374 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:38,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:21:38,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40753609] [2019-10-15 03:21:38,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:21:38,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:38,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:21:38,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:21:38,397 INFO L87 Difference]: Start difference. First operand 143 states. Second operand 2 states. [2019-10-15 03:21:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:38,436 INFO L93 Difference]: Finished difference Result 219 states and 262 transitions. [2019-10-15 03:21:38,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:21:38,438 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:21:38,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:38,451 INFO L225 Difference]: With dead ends: 219 [2019-10-15 03:21:38,451 INFO L226 Difference]: Without dead ends: 110 [2019-10-15 03:21:38,456 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 03:21:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-15 03:21:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2019-10-15 03:21:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2019-10-15 03:21:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2019-10-15 03:21:38,511 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 42 [2019-10-15 03:21:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:38,512 INFO L462 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2019-10-15 03:21:38,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:21:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2019-10-15 03:21:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:21:38,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:38,516 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:38,517 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1724353903, now seen corresponding path program 1 times [2019-10-15 03:21:38,518 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:38,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969370316] [2019-10-15 03:21:38,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:38,518 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:38,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:38,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969370316] [2019-10-15 03:21:38,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:38,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:21:38,658 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417683544] [2019-10-15 03:21:38,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:21:38,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:38,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:21:38,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:21:38,662 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 3 states. [2019-10-15 03:21:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:38,688 INFO L93 Difference]: Finished difference Result 173 states and 196 transitions. [2019-10-15 03:21:38,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:21:38,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:21:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:38,691 INFO L225 Difference]: With dead ends: 173 [2019-10-15 03:21:38,692 INFO L226 Difference]: Without dead ends: 102 [2019-10-15 03:21:38,693 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 03:21:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-15 03:21:38,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-15 03:21:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-15 03:21:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2019-10-15 03:21:38,708 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 43 [2019-10-15 03:21:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:38,709 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2019-10-15 03:21:38,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:21:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2019-10-15 03:21:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:21:38,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:38,714 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:38,714 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:38,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:38,715 INFO L82 PathProgramCache]: Analyzing trace with hash -526236297, now seen corresponding path program 1 times [2019-10-15 03:21:38,715 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:38,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489511104] [2019-10-15 03:21:38,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:38,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:38,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:38,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489511104] [2019-10-15 03:21:38,899 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:38,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:21:38,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840113975] [2019-10-15 03:21:38,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:38,904 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:38,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:21:38,905 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2019-10-15 03:21:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:39,298 INFO L93 Difference]: Finished difference Result 182 states and 207 transitions. [2019-10-15 03:21:39,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:21:39,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-15 03:21:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:39,303 INFO L225 Difference]: With dead ends: 182 [2019-10-15 03:21:39,304 INFO L226 Difference]: Without dead ends: 102 [2019-10-15 03:21:39,309 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 03:21:39,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-15 03:21:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2019-10-15 03:21:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-10-15 03:21:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2019-10-15 03:21:39,332 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 46 [2019-10-15 03:21:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:39,333 INFO L462 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2019-10-15 03:21:39,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:39,333 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2019-10-15 03:21:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-15 03:21:39,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:39,340 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:39,345 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:39,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1609259560, now seen corresponding path program 1 times [2019-10-15 03:21:39,346 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:39,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312306189] [2019-10-15 03:21:39,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:39,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:39,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:39,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312306189] [2019-10-15 03:21:39,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:39,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:21:39,505 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713985293] [2019-10-15 03:21:39,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:21:39,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:39,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:21:39,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:21:39,506 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand 5 states. [2019-10-15 03:21:39,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:39,987 INFO L93 Difference]: Finished difference Result 270 states and 316 transitions. [2019-10-15 03:21:39,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:21:39,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2019-10-15 03:21:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:39,994 INFO L225 Difference]: With dead ends: 270 [2019-10-15 03:21:39,994 INFO L226 Difference]: Without dead ends: 190 [2019-10-15 03:21:39,995 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 03:21:39,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-10-15 03:21:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2019-10-15 03:21:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-10-15 03:21:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2019-10-15 03:21:40,026 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 59 [2019-10-15 03:21:40,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:40,027 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2019-10-15 03:21:40,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:21:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2019-10-15 03:21:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-15 03:21:40,028 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:40,029 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:40,029 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:40,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:40,029 INFO L82 PathProgramCache]: Analyzing trace with hash 502948974, now seen corresponding path program 1 times [2019-10-15 03:21:40,030 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:40,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727959625] [2019-10-15 03:21:40,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:40,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727959625] [2019-10-15 03:21:40,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:40,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:21:40,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725320162] [2019-10-15 03:21:40,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:21:40,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:40,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:21:40,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:40,224 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand 10 states. [2019-10-15 03:21:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:40,748 INFO L93 Difference]: Finished difference Result 508 states and 587 transitions. [2019-10-15 03:21:40,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:21:40,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2019-10-15 03:21:40,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:40,755 INFO L225 Difference]: With dead ends: 508 [2019-10-15 03:21:40,755 INFO L226 Difference]: Without dead ends: 357 [2019-10-15 03:21:40,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:21:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2019-10-15 03:21:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 343. [2019-10-15 03:21:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-15 03:21:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 384 transitions. [2019-10-15 03:21:40,824 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 384 transitions. Word has length 68 [2019-10-15 03:21:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:40,826 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 384 transitions. [2019-10-15 03:21:40,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:21:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 384 transitions. [2019-10-15 03:21:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-10-15 03:21:40,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:40,830 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:21:40,830 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:40,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:40,831 INFO L82 PathProgramCache]: Analyzing trace with hash -339452596, now seen corresponding path program 1 times [2019-10-15 03:21:40,831 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:40,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982748085] [2019-10-15 03:21:40,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:21:41,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982748085] [2019-10-15 03:21:41,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378884837] [2019-10-15 03:21:41,227 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 03:21:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:41,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:21:41,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:21:41,545 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:21:41,768 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:21:41,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [14] total 19 [2019-10-15 03:21:41,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366771986] [2019-10-15 03:21:41,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:41,770 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:41,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:41,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:21:41,771 INFO L87 Difference]: Start difference. First operand 343 states and 384 transitions. Second operand 7 states. [2019-10-15 03:21:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:42,174 INFO L93 Difference]: Finished difference Result 352 states and 393 transitions. [2019-10-15 03:21:42,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:21:42,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2019-10-15 03:21:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:42,179 INFO L225 Difference]: With dead ends: 352 [2019-10-15 03:21:42,179 INFO L226 Difference]: Without dead ends: 349 [2019-10-15 03:21:42,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2019-10-15 03:21:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-10-15 03:21:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2019-10-15 03:21:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2019-10-15 03:21:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 383 transitions. [2019-10-15 03:21:42,208 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 383 transitions. Word has length 109 [2019-10-15 03:21:42,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:42,209 INFO L462 AbstractCegarLoop]: Abstraction has 343 states and 383 transitions. [2019-10-15 03:21:42,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:42,209 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 383 transitions. [2019-10-15 03:21:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 03:21:42,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:42,212 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:21:42,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:42,419 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:42,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:42,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1916115072, now seen corresponding path program 1 times [2019-10-15 03:21:42,420 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:42,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142835791] [2019-10-15 03:21:42,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:21:42,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142835791] [2019-10-15 03:21:42,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767062135] [2019-10-15 03:21:42,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:42,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 33 conjunts are in the unsatisfiable core [2019-10-15 03:21:42,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:43,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:43,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:43,302 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:43,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:44,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:44,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:44,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:21:44,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:21:44,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-10-15 03:21:44,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884587149] [2019-10-15 03:21:44,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:21:44,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:44,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:21:44,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 03:21:44,879 INFO L87 Difference]: Start difference. First operand 343 states and 383 transitions. Second operand 14 states. [2019-10-15 03:21:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:46,943 INFO L93 Difference]: Finished difference Result 757 states and 870 transitions. [2019-10-15 03:21:46,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-15 03:21:46,944 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 114 [2019-10-15 03:21:46,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:46,947 INFO L225 Difference]: With dead ends: 757 [2019-10-15 03:21:46,947 INFO L226 Difference]: Without dead ends: 436 [2019-10-15 03:21:46,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 206 SyntacticMatches, 9 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=388, Invalid=2474, Unknown=0, NotChecked=0, Total=2862 [2019-10-15 03:21:46,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-10-15 03:21:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 429. [2019-10-15 03:21:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-15 03:21:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 481 transitions. [2019-10-15 03:21:46,979 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 481 transitions. Word has length 114 [2019-10-15 03:21:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:46,980 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 481 transitions. [2019-10-15 03:21:46,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:21:46,980 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 481 transitions. [2019-10-15 03:21:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-15 03:21:46,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:46,982 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:47,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:47,187 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash -675322502, now seen corresponding path program 1 times [2019-10-15 03:21:47,188 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070413662] [2019-10-15 03:21:47,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,189 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:21:47,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070413662] [2019-10-15 03:21:47,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696253759] [2019-10-15 03:21:47,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 54 conjunts are in the unsatisfiable core [2019-10-15 03:21:47,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:47,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:47,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:21:47,893 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:48,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:21:49,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1022340530] [2019-10-15 03:21:49,067 INFO L162 IcfgInterpreter]: Started Sifa with 92 locations of interest [2019-10-15 03:21:49,068 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:21:49,074 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:21:49,081 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:21:49,081 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:21:59,794 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:22:01,476 WARN L191 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:22:01,677 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:01,805 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:01,938 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:02,200 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:02,452 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:02,645 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:02,917 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:03,341 WARN L191 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:22:03,560 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:03,731 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:03,841 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:03,960 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:04,100 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:04,112 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:22:04,329 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-15 03:22:04,459 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:04,601 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:04,731 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:04,881 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:04,987 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:05,115 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,236 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:05,337 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:05,487 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:05,701 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-15 03:22:05,924 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:06,035 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:06,166 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:06,287 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:06,389 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:06,493 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:06,624 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:06,842 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:06,960 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:07,276 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:07,483 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:07,636 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:07,738 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:07,955 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:08,270 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:08,393 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:08,655 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:08,861 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:08,979 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,158 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,272 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,450 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,747 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:09,857 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,981 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,090 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,198 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,317 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,455 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,587 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,711 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:10,947 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:11,057 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:11,184 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,379 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:11,512 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:11,632 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:11,756 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:11,870 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:12,053 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-15 03:22:12,169 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:12,284 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:12,417 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:12,628 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:12,824 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:12,958 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:13,076 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:13,192 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:13,347 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:13,462 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:13,581 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:13,704 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-15 03:22:13,956 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:14,083 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,211 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,436 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:14,545 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,671 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,781 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:14,891 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:15,011 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:15,134 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,245 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560