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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:21:43,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:21:43,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:21:43,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:21:43,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:21:43,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:21:43,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:21:43,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:21:43,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:21:43,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:21:43,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:21:43,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:21:43,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:21:43,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:21:43,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:21:43,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:21:43,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:21:43,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:21:43,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:21:43,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:21:43,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:21:43,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:21:43,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:21:43,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:21:43,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:21:43,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:21:43,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:21:43,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:21:43,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:21:43,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:21:43,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:21:43,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:21:43,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:21:43,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:21:43,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:21:43,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:21:43,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:21:43,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:21:43,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:21:43,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:21:43,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:21:43,327 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 03:21:43,363 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:21:43,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:21:43,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:21:43,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:21:43,367 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:21:43,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:21:43,368 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:21:43,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:21:43,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:21:43,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:21:43,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:21:43,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:21:43,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:21:43,373 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:21:43,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:21:43,373 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:21:43,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:21:43,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:21:43,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:21:43,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:21:43,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:21:43,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:21:43,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:21:43,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:21:43,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:21:43,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:21:43,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:21:43,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:21:43,377 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 03:21:43,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:21:43,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:21:43,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:21:43,698 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:21:43,699 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:21:43,700 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product60.cil.c [2019-10-15 03:21:43,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f675faff/0d916ed2a8944fdf9c622a909a565618/FLAG667c21520 [2019-10-15 03:21:44,266 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:21:44,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product60.cil.c [2019-10-15 03:21:44,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f675faff/0d916ed2a8944fdf9c622a909a565618/FLAG667c21520 [2019-10-15 03:21:44,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f675faff/0d916ed2a8944fdf9c622a909a565618 [2019-10-15 03:21:44,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:21:44,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:21:44,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:44,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:21:44,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:21:44,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:44" (1/1) ... [2019-10-15 03:21:44,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c168e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:44, skipping insertion in model container [2019-10-15 03:21:44,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:44" (1/1) ... [2019-10-15 03:21:44,664 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:21:44,715 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:21:45,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:45,206 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:21:45,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:45,359 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:21:45,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45 WrapperNode [2019-10-15 03:21:45,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:45,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:21:45,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:21:45,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:21:45,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (1/1) ... [2019-10-15 03:21:45,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (1/1) ... [2019-10-15 03:21:45,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (1/1) ... [2019-10-15 03:21:45,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (1/1) ... [2019-10-15 03:21:45,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (1/1) ... [2019-10-15 03:21:45,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (1/1) ... [2019-10-15 03:21:45,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (1/1) ... [2019-10-15 03:21:45,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:21:45,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:21:45,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:21:45,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:21:45,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (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 03:21:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:21:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:21:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:21:45,540 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:21:45,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:21:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:21:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:21:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:21:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:21:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:21:45,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:21:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:45,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:21:45,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:21:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:21:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:21:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:21:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:21:45,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:45,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:21:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:21:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:21:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:21:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:21:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:21:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:21:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:21:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:21:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:21:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:21:45,550 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:21:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:21:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:21:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:21:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:21:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:21:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:21:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:21:45,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:21:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:21:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:21:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:21:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:21:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:21:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:21:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:21:45,554 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:21:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:21:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:21:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:21:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:21:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:21:45,555 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:21:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:21:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:21:45,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:21:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:21:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:21:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:21:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:21:45,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:21:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:21:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:21:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:21:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:45,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:21:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:21:45,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:21:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:21:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:21:45,560 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:21:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:21:45,561 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:21:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:21:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:21:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:21:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:21:45,562 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:21:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:21:45,563 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:21:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:21:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:21:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:21:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:21:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:21:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:45,564 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:21:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:21:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:21:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:21:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:21:45,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:21:47,154 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:21:47,155 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:21:47,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:47 BoogieIcfgContainer [2019-10-15 03:21:47,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:21:47,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:21:47,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:21:47,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:21:47,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:21:44" (1/3) ... [2019-10-15 03:21:47,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec42c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:47, skipping insertion in model container [2019-10-15 03:21:47,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:45" (2/3) ... [2019-10-15 03:21:47,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec42c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:47, skipping insertion in model container [2019-10-15 03:21:47,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:47" (3/3) ... [2019-10-15 03:21:47,164 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product60.cil.c [2019-10-15 03:21:47,175 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:21:47,184 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:21:47,196 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:21:47,225 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:21:47,225 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:21:47,225 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:21:47,225 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:21:47,226 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:21:47,226 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:21:47,226 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:21:47,226 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:21:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2019-10-15 03:21:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:21:47,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:47,262 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 03:21:47,264 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,271 INFO L82 PathProgramCache]: Analyzing trace with hash 636988656, now seen corresponding path program 1 times [2019-10-15 03:21:47,281 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457290893] [2019-10-15 03:21:47,282 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,583 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 03:21:47,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457290893] [2019-10-15 03:21:47,585 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:47,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:21:47,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113809301] [2019-10-15 03:21:47,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:21:47,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:47,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:21:47,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:21:47,609 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 2 states. [2019-10-15 03:21:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:47,654 INFO L93 Difference]: Finished difference Result 257 states and 308 transitions. [2019-10-15 03:21:47,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:21:47,656 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:21:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:47,670 INFO L225 Difference]: With dead ends: 257 [2019-10-15 03:21:47,671 INFO L226 Difference]: Without dead ends: 129 [2019-10-15 03:21:47,675 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 03:21:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2019-10-15 03:21:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2019-10-15 03:21:47,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-15 03:21:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2019-10-15 03:21:47,739 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 42 [2019-10-15 03:21:47,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:47,740 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2019-10-15 03:21:47,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:21:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2019-10-15 03:21:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:21:47,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:47,747 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 03:21:47,747 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,749 INFO L82 PathProgramCache]: Analyzing trace with hash 157391915, now seen corresponding path program 1 times [2019-10-15 03:21:47,749 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497958392] [2019-10-15 03:21:47,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,750 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,949 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 03:21:47,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497958392] [2019-10-15 03:21:47,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:47,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:21:47,950 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028740052] [2019-10-15 03:21:47,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:21:47,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:47,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:21:47,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:21:47,956 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand 3 states. [2019-10-15 03:21:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:48,003 INFO L93 Difference]: Finished difference Result 205 states and 233 transitions. [2019-10-15 03:21:48,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:21:48,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:21:48,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:48,008 INFO L225 Difference]: With dead ends: 205 [2019-10-15 03:21:48,009 INFO L226 Difference]: Without dead ends: 121 [2019-10-15 03:21:48,012 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 03:21:48,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-15 03:21:48,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-10-15 03:21:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-15 03:21:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 137 transitions. [2019-10-15 03:21:48,042 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 137 transitions. Word has length 43 [2019-10-15 03:21:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:48,043 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 137 transitions. [2019-10-15 03:21:48,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:21:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 137 transitions. [2019-10-15 03:21:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:21:48,046 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:48,046 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:48,046 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:48,047 INFO L82 PathProgramCache]: Analyzing trace with hash -485270997, now seen corresponding path program 1 times [2019-10-15 03:21:48,047 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:48,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720815536] [2019-10-15 03:21:48,047 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,048 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:48,253 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 03:21:48,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720815536] [2019-10-15 03:21:48,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:48,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:21:48,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307854741] [2019-10-15 03:21:48,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:48,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:48,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:48,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:21:48,258 INFO L87 Difference]: Start difference. First operand 121 states and 137 transitions. Second operand 7 states. [2019-10-15 03:21:48,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:48,796 INFO L93 Difference]: Finished difference Result 364 states and 427 transitions. [2019-10-15 03:21:48,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:21:48,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-10-15 03:21:48,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:48,800 INFO L225 Difference]: With dead ends: 364 [2019-10-15 03:21:48,800 INFO L226 Difference]: Without dead ends: 265 [2019-10-15 03:21:48,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:48,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2019-10-15 03:21:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 253. [2019-10-15 03:21:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2019-10-15 03:21:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 296 transitions. [2019-10-15 03:21:48,836 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 296 transitions. Word has length 47 [2019-10-15 03:21:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:48,837 INFO L462 AbstractCegarLoop]: Abstraction has 253 states and 296 transitions. [2019-10-15 03:21:48,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 296 transitions. [2019-10-15 03:21:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:21:48,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:48,840 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:48,840 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1162169891, now seen corresponding path program 1 times [2019-10-15 03:21:48,841 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:48,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174207258] [2019-10-15 03:21:48,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:48,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:48,985 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 03:21:48,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174207258] [2019-10-15 03:21:48,986 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:48,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:21:48,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954211297] [2019-10-15 03:21:48,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:21:48,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:48,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:21:48,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:48,990 INFO L87 Difference]: Start difference. First operand 253 states and 296 transitions. Second operand 10 states. [2019-10-15 03:21:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:49,680 INFO L93 Difference]: Finished difference Result 907 states and 1106 transitions. [2019-10-15 03:21:49,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:21:49,681 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-10-15 03:21:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:49,693 INFO L225 Difference]: With dead ends: 907 [2019-10-15 03:21:49,695 INFO L226 Difference]: Without dead ends: 676 [2019-10-15 03:21:49,699 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 03:21:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2019-10-15 03:21:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 652. [2019-10-15 03:21:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2019-10-15 03:21:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 779 transitions. [2019-10-15 03:21:49,792 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 779 transitions. Word has length 51 [2019-10-15 03:21:49,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:49,793 INFO L462 AbstractCegarLoop]: Abstraction has 652 states and 779 transitions. [2019-10-15 03:21:49,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:21:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 779 transitions. [2019-10-15 03:21:49,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 03:21:49,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:49,798 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] [2019-10-15 03:21:49,799 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash -164233312, now seen corresponding path program 1 times [2019-10-15 03:21:49,799 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:49,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778600555] [2019-10-15 03:21:49,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:49,800 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:49,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:49,908 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 03:21:49,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778600555] [2019-10-15 03:21:49,910 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:49,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:21:49,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925602839] [2019-10-15 03:21:49,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:21:49,912 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:49,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:21:49,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:21:49,912 INFO L87 Difference]: Start difference. First operand 652 states and 779 transitions. Second operand 4 states. [2019-10-15 03:21:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:50,250 INFO L93 Difference]: Finished difference Result 1602 states and 2085 transitions. [2019-10-15 03:21:50,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:21:50,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2019-10-15 03:21:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:50,258 INFO L225 Difference]: With dead ends: 1602 [2019-10-15 03:21:50,258 INFO L226 Difference]: Without dead ends: 972 [2019-10-15 03:21:50,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:21:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2019-10-15 03:21:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 839. [2019-10-15 03:21:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2019-10-15 03:21:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 992 transitions. [2019-10-15 03:21:50,333 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 992 transitions. Word has length 57 [2019-10-15 03:21:50,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:50,334 INFO L462 AbstractCegarLoop]: Abstraction has 839 states and 992 transitions. [2019-10-15 03:21:50,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:21:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 992 transitions. [2019-10-15 03:21:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-15 03:21:50,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:50,339 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] [2019-10-15 03:21:50,339 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:50,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1831745759, now seen corresponding path program 1 times [2019-10-15 03:21:50,371 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:50,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043631001] [2019-10-15 03:21:50,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:50,371 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:50,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:21:50,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043631001] [2019-10-15 03:21:50,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224782079] [2019-10-15 03:21:50,505 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 03:21:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:50,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:21:50,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:21:50,777 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 03:21:50,898 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:21:50,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-15 03:21:50,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022415099] [2019-10-15 03:21:50,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:50,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:50,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:50,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:21:50,900 INFO L87 Difference]: Start difference. First operand 839 states and 992 transitions. Second operand 7 states. [2019-10-15 03:21:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:51,142 INFO L93 Difference]: Finished difference Result 852 states and 1008 transitions. [2019-10-15 03:21:51,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:21:51,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2019-10-15 03:21:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:51,149 INFO L225 Difference]: With dead ends: 852 [2019-10-15 03:21:51,149 INFO L226 Difference]: Without dead ends: 849 [2019-10-15 03:21:51,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-15 03:21:51,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2019-10-15 03:21:51,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 839. [2019-10-15 03:21:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2019-10-15 03:21:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 989 transitions. [2019-10-15 03:21:51,212 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 989 transitions. Word has length 79 [2019-10-15 03:21:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:51,214 INFO L462 AbstractCegarLoop]: Abstraction has 839 states and 989 transitions. [2019-10-15 03:21:51,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 989 transitions. [2019-10-15 03:21:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 03:21:51,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:51,225 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:51,432 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:51,433 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:51,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:51,434 INFO L82 PathProgramCache]: Analyzing trace with hash -20721201, now seen corresponding path program 1 times [2019-10-15 03:21:51,435 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:51,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964124781] [2019-10-15 03:21:51,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:51,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:51,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 03:21:51,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964124781] [2019-10-15 03:21:51,577 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:51,578 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:21:51,578 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66200559] [2019-10-15 03:21:51,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:21:51,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:51,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:21:51,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:21:51,579 INFO L87 Difference]: Start difference. First operand 839 states and 989 transitions. Second operand 4 states. [2019-10-15 03:21:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:51,768 INFO L93 Difference]: Finished difference Result 1330 states and 1573 transitions. [2019-10-15 03:21:51,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:21:51,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-15 03:21:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:51,773 INFO L225 Difference]: With dead ends: 1330 [2019-10-15 03:21:51,773 INFO L226 Difference]: Without dead ends: 513 [2019-10-15 03:21:51,776 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:21:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-10-15 03:21:51,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 498. [2019-10-15 03:21:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-10-15 03:21:51,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 576 transitions. [2019-10-15 03:21:51,808 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 576 transitions. Word has length 149 [2019-10-15 03:21:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:51,808 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 576 transitions. [2019-10-15 03:21:51,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:21:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 576 transitions. [2019-10-15 03:21:51,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 03:21:51,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:51,811 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:51,811 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:51,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1922028013, now seen corresponding path program 1 times [2019-10-15 03:21:51,812 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:51,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894282138] [2019-10-15 03:21:51,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:51,813 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:51,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:21:52,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894282138] [2019-10-15 03:21:52,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129728709] [2019-10-15 03:21:52,103 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 03:21:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:52,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 03:21:52,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:21:52,433 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:21:52,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1054441903] [2019-10-15 03:21:52,791 INFO L162 IcfgInterpreter]: Started Sifa with 90 locations of interest [2019-10-15 03:21:52,792 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:21:52,799 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:21:52,806 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:21:52,807 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:22:02,911 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:22:04,758 WARN L191 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:22:04,914 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:05,067 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:05,205 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:05,476 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:05,705 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:05,910 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:06,116 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:06,564 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:22:06,763 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:06,948 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,133 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,268 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,381 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,390 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:22:07,690 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-15 03:22:07,692 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 542 for LOIs [2019-10-15 03:22:07,823 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:07,937 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:08,067 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:08,179 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:08,326 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:08,478 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:08,628 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:08,748 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:08,872 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,107 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 542 [2019-10-15 03:22:09,224 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:09,350 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:09,467 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:09,728 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,052 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,162 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:10,408 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:10,724 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:11,037 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:11,148 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:11,273 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:11,393 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:11,710 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,038 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,245 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 542 [2019-10-15 03:22:12,362 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,512 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,622 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:12,765 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,015 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:13,126 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,252 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,361 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,474 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,593 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:13,752 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:13,864 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:14,008 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:14,301 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:14,412 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:14,537 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:14,648 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:14,759 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:14,880 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,009 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:15,138 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:15,258 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,369 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,478 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,605 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:15,730 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,841 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:15,962 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:16,168 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 564 DAG size of output: 560 [2019-10-15 03:22:16,278 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:16,416 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:16,525 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:16,635 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:16,756 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:17,042 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:17,151 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,292 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,506 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:17,614 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,741 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,850 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:17,959 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,075 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:18,288 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-15 03:22:18,402 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:18,525 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:18,746 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:18,854 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:18,983 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:19,171 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:19,281 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:19,401 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:19,617 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-15 03:22:19,729 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:19,885 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:20,076 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-15 03:22:20,189 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:20,318 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-15 03:22:20,528 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:20,638 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:20,760 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:20,961 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:21,070 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:21,197 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:21,307 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:21,415 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:21,530 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:21,734 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:21,845 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:21,995 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,199 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:22,308 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,428 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,536 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,644 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,762 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:22,899 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:23,010 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:23,150 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:23,363 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:23,474 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:23,603 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:23,796 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:23,912 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:24,033 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:24,222 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-15 03:22:24,336 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-15 03:22:24,466 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-15 03:22:24,687 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:24,795 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:24,913 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556