/usr/bin/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_spec2_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:31:19,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:31:19,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:31:19,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:31:19,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:31:19,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:31:19,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:31:19,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:31:19,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:31:19,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:31:19,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:31:19,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:31:19,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:31:19,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:31:19,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:31:19,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:31:19,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:31:19,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:31:19,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:31:19,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:31:19,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:31:19,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:31:19,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:31:19,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:31:19,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:31:19,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:31:19,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:31:19,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:31:19,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:31:19,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:31:19,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:31:19,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:31:19,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:31:19,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:31:19,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:31:19,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:31:19,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:31:19,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:31:19,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:31:19,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:31:19,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:31:19,551 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 [2019-11-07 04:31:19,566 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:31:19,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:31:19,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:31:19,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:31:19,568 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:31:19,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:31:19,568 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:31:19,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:31:19,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:31:19,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:31:19,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:31:19,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:31:19,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:31:19,571 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:31:19,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:31:19,571 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:31:19,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:31:19,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:31:19,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:31:19,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:31:19,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:31:19,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:31:19,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:31:19,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:31:19,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:31:19,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:31:19,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:31:19,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:31:19,574 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 [2019-11-07 04:31:19,847 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:31:19,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:31:19,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:31:19,866 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:31:19,866 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:31:19,867 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-11-07 04:31:19,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d746e5d93/828e7a5418d0464bb60bcd6f48bea8ab/FLAGe11ce2f71 [2019-11-07 04:31:20,502 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:31:20,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product60.cil.c [2019-11-07 04:31:20,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d746e5d93/828e7a5418d0464bb60bcd6f48bea8ab/FLAGe11ce2f71 [2019-11-07 04:31:20,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d746e5d93/828e7a5418d0464bb60bcd6f48bea8ab [2019-11-07 04:31:20,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:31:20,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:31:20,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:31:20,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:31:20,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:31:20,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:31:20" (1/1) ... [2019-11-07 04:31:20,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312b99b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:20, skipping insertion in model container [2019-11-07 04:31:20,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:31:20" (1/1) ... [2019-11-07 04:31:20,833 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:31:20,879 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:31:21,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:31:21,345 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:31:21,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:31:21,534 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:31:21,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21 WrapperNode [2019-11-07 04:31:21,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:31:21,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:31:21,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:31:21,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:31:21,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (1/1) ... [2019-11-07 04:31:21,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (1/1) ... [2019-11-07 04:31:21,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (1/1) ... [2019-11-07 04:31:21,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (1/1) ... [2019-11-07 04:31:21,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (1/1) ... [2019-11-07 04:31:21,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (1/1) ... [2019-11-07 04:31:21,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (1/1) ... [2019-11-07 04:31:21,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:31:21,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:31:21,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:31:21,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:31:21,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (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 [2019-11-07 04:31:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:31:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:31:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:31:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:31:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:31:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:31:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:31:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:31:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:31:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:31:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:31:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:31:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:31:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:31:21,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:31:21,695 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:31:21,695 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:31:21,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:31:21,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:31:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:31:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:31:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:31:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:31:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:31:21,696 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:31:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:31:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:31:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:31:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:31:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:31:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:31:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:31:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:31:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:31:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:31:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:31:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:31:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:31:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:31:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:31:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:31:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:31:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:31:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:31:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:31:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:31:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:31:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:31:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:31:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:31:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:31:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:31:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:31:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:31:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:31:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:31:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:31:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:31:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:31:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:31:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:31:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:31:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:31:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:31:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:31:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:31:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:31:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:31:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:31:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:31:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:31:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:31:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:31:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:31:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:31:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:31:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:31:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:31:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:31:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:31:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:31:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:31:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:31:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:31:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:31:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:31:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:31:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:31:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:31:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:31:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:31:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:31:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:31:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:31:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:31:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:31:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:31:23,526 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:31:23,527 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:31:23,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:31:23 BoogieIcfgContainer [2019-11-07 04:31:23,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:31:23,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:31:23,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:31:23,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:31:23,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:31:20" (1/3) ... [2019-11-07 04:31:23,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402fd229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:31:23, skipping insertion in model container [2019-11-07 04:31:23,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:31:21" (2/3) ... [2019-11-07 04:31:23,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402fd229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:31:23, skipping insertion in model container [2019-11-07 04:31:23,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:31:23" (3/3) ... [2019-11-07 04:31:23,544 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product60.cil.c [2019-11-07 04:31:23,557 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:31:23,568 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:31:23,582 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:31:23,623 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:31:23,623 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:31:23,624 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:31:23,624 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:31:23,624 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:31:23,624 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:31:23,626 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:31:23,627 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:31:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2019-11-07 04:31:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 04:31:23,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:23,669 INFO L410 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] [2019-11-07 04:31:23,671 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:23,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:23,677 INFO L82 PathProgramCache]: Analyzing trace with hash 203835508, now seen corresponding path program 1 times [2019-11-07 04:31:23,688 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:23,688 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693882293] [2019-11-07 04:31:23,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:31:24,024 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693882293] [2019-11-07 04:31:24,025 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:31:24,026 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:31:24,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831012985] [2019-11-07 04:31:24,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:31:24,036 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:24,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:31:24,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:31:24,068 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2019-11-07 04:31:24,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:24,152 INFO L93 Difference]: Finished difference Result 258 states and 313 transitions. [2019-11-07 04:31:24,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:31:24,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-11-07 04:31:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:24,176 INFO L225 Difference]: With dead ends: 258 [2019-11-07 04:31:24,176 INFO L226 Difference]: Without dead ends: 131 [2019-11-07 04:31:24,183 INFO L630 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 [2019-11-07 04:31:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-07 04:31:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-11-07 04:31:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-07 04:31:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2019-11-07 04:31:24,271 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 46 [2019-11-07 04:31:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:24,271 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2019-11-07 04:31:24,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:31:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2019-11-07 04:31:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 04:31:24,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:24,283 INFO L410 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] [2019-11-07 04:31:24,283 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:24,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:24,284 INFO L82 PathProgramCache]: Analyzing trace with hash -245440472, now seen corresponding path program 1 times [2019-11-07 04:31:24,284 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:24,285 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366621488] [2019-11-07 04:31:24,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:31:24,503 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366621488] [2019-11-07 04:31:24,503 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:31:24,504 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:31:24,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929306591] [2019-11-07 04:31:24,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:31:24,506 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:24,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:31:24,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:31:24,507 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 3 states. [2019-11-07 04:31:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:24,529 INFO L93 Difference]: Finished difference Result 206 states and 238 transitions. [2019-11-07 04:31:24,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:31:24,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-11-07 04:31:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:24,533 INFO L225 Difference]: With dead ends: 206 [2019-11-07 04:31:24,533 INFO L226 Difference]: Without dead ends: 123 [2019-11-07 04:31:24,535 INFO L630 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 [2019-11-07 04:31:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-11-07 04:31:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-11-07 04:31:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-11-07 04:31:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 141 transitions. [2019-11-07 04:31:24,581 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 141 transitions. Word has length 47 [2019-11-07 04:31:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:24,581 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 141 transitions. [2019-11-07 04:31:24,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:31:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 141 transitions. [2019-11-07 04:31:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 04:31:24,583 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:24,584 INFO L410 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] [2019-11-07 04:31:24,584 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:24,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:24,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1796950977, now seen corresponding path program 1 times [2019-11-07 04:31:24,585 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:24,585 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778532705] [2019-11-07 04:31:24,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:31:24,779 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778532705] [2019-11-07 04:31:24,779 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:31:24,779 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:31:24,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152121087] [2019-11-07 04:31:24,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:31:24,780 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:24,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:31:24,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:31:24,781 INFO L87 Difference]: Start difference. First operand 123 states and 141 transitions. Second operand 7 states. [2019-11-07 04:31:25,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:25,312 INFO L93 Difference]: Finished difference Result 365 states and 435 transitions. [2019-11-07 04:31:25,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:31:25,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-11-07 04:31:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:25,320 INFO L225 Difference]: With dead ends: 365 [2019-11-07 04:31:25,320 INFO L226 Difference]: Without dead ends: 267 [2019-11-07 04:31:25,322 INFO L630 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 [2019-11-07 04:31:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2019-11-07 04:31:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 255. [2019-11-07 04:31:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2019-11-07 04:31:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2019-11-07 04:31:25,392 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 51 [2019-11-07 04:31:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:25,392 INFO L462 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2019-11-07 04:31:25,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:31:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2019-11-07 04:31:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-07 04:31:25,399 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:25,399 INFO L410 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] [2019-11-07 04:31:25,400 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:25,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:25,400 INFO L82 PathProgramCache]: Analyzing trace with hash -185841491, now seen corresponding path program 1 times [2019-11-07 04:31:25,400 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:25,400 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463102214] [2019-11-07 04:31:25,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:31:25,579 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463102214] [2019-11-07 04:31:25,579 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:31:25,579 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:31:25,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562773812] [2019-11-07 04:31:25,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:31:25,580 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:25,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:31:25,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:31:25,581 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand 6 states. [2019-11-07 04:31:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:25,874 INFO L93 Difference]: Finished difference Result 697 states and 846 transitions. [2019-11-07 04:31:25,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:31:25,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-11-07 04:31:25,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:25,884 INFO L225 Difference]: With dead ends: 697 [2019-11-07 04:31:25,888 INFO L226 Difference]: Without dead ends: 467 [2019-11-07 04:31:25,889 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:31:25,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2019-11-07 04:31:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 455. [2019-11-07 04:31:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2019-11-07 04:31:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2019-11-07 04:31:25,953 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 55 [2019-11-07 04:31:25,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:25,955 INFO L462 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2019-11-07 04:31:25,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:31:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2019-11-07 04:31:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-07 04:31:25,959 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:25,959 INFO L410 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] [2019-11-07 04:31:25,960 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:25,960 INFO L82 PathProgramCache]: Analyzing trace with hash -2036644305, now seen corresponding path program 1 times [2019-11-07 04:31:25,960 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:25,961 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473512406] [2019-11-07 04:31:25,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:31:26,095 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473512406] [2019-11-07 04:31:26,096 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:31:26,097 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:31:26,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578358414] [2019-11-07 04:31:26,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:31:26,099 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:26,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:31:26,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:31:26,101 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 7 states. [2019-11-07 04:31:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:26,885 INFO L93 Difference]: Finished difference Result 1187 states and 1538 transitions. [2019-11-07 04:31:26,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:31:26,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-11-07 04:31:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:26,899 INFO L225 Difference]: With dead ends: 1187 [2019-11-07 04:31:26,899 INFO L226 Difference]: Without dead ends: 757 [2019-11-07 04:31:26,902 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 04:31:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-11-07 04:31:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 668. [2019-11-07 04:31:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2019-11-07 04:31:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 796 transitions. [2019-11-07 04:31:27,002 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 796 transitions. Word has length 58 [2019-11-07 04:31:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:27,003 INFO L462 AbstractCegarLoop]: Abstraction has 668 states and 796 transitions. [2019-11-07 04:31:27,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:31:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 796 transitions. [2019-11-07 04:31:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-07 04:31:27,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:27,009 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:31:27,009 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:27,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:27,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2002651380, now seen corresponding path program 1 times [2019-11-07 04:31:27,010 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:27,010 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815757919] [2019-11-07 04:31:27,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:31:27,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815757919] [2019-11-07 04:31:27,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369718758] [2019-11-07 04:31:27,239 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 [2019-11-07 04:31:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:27,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 04:31:27,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:31:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:31:27,584 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:31:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:31:27,745 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:31:27,745 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-11-07 04:31:27,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953825139] [2019-11-07 04:31:27,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:31:27,746 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:27,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:31:27,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-11-07 04:31:27,747 INFO L87 Difference]: Start difference. First operand 668 states and 796 transitions. Second operand 3 states. [2019-11-07 04:31:27,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:27,800 INFO L93 Difference]: Finished difference Result 945 states and 1152 transitions. [2019-11-07 04:31:27,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:31:27,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2019-11-07 04:31:27,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:27,807 INFO L225 Difference]: With dead ends: 945 [2019-11-07 04:31:27,808 INFO L226 Difference]: Without dead ends: 942 [2019-11-07 04:31:27,809 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-11-07 04:31:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2019-11-07 04:31:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 914. [2019-11-07 04:31:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2019-11-07 04:31:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1115 transitions. [2019-11-07 04:31:27,876 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1115 transitions. Word has length 89 [2019-11-07 04:31:27,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:27,876 INFO L462 AbstractCegarLoop]: Abstraction has 914 states and 1115 transitions. [2019-11-07 04:31:27,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:31:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1115 transitions. [2019-11-07 04:31:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 04:31:27,882 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:27,882 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:31:28,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:31:28,089 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:28,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:28,090 INFO L82 PathProgramCache]: Analyzing trace with hash -479479501, now seen corresponding path program 1 times [2019-11-07 04:31:28,090 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:28,091 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538908576] [2019-11-07 04:31:28,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 04:31:28,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538908576] [2019-11-07 04:31:28,334 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850824810] [2019-11-07 04:31:28,334 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 [2019-11-07 04:31:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:28,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-07 04:31:28,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:31:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:31:28,694 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:31:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 04:31:29,427 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:31:29,427 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 12] total 25 [2019-11-07 04:31:29,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731985350] [2019-11-07 04:31:29,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 04:31:29,428 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:29,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 04:31:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2019-11-07 04:31:29,429 INFO L87 Difference]: Start difference. First operand 914 states and 1115 transitions. Second operand 11 states. [2019-11-07 04:31:30,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:30,315 INFO L93 Difference]: Finished difference Result 2088 states and 2638 transitions. [2019-11-07 04:31:30,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:31:30,317 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2019-11-07 04:31:30,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:30,328 INFO L225 Difference]: With dead ends: 2088 [2019-11-07 04:31:30,328 INFO L226 Difference]: Without dead ends: 1199 [2019-11-07 04:31:30,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2019-11-07 04:31:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2019-11-07 04:31:30,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1175. [2019-11-07 04:31:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-11-07 04:31:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1426 transitions. [2019-11-07 04:31:30,410 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1426 transitions. Word has length 142 [2019-11-07 04:31:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:30,411 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1426 transitions. [2019-11-07 04:31:30,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 04:31:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1426 transitions. [2019-11-07 04:31:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 04:31:30,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:30,419 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 04:31:30,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:31:30,623 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:30,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1729625035, now seen corresponding path program 1 times [2019-11-07 04:31:30,624 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:30,624 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45790078] [2019-11-07 04:31:30,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 04:31:31,095 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45790078] [2019-11-07 04:31:31,095 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224783159] [2019-11-07 04:31:31,095 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 [2019-11-07 04:31:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:31,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-07 04:31:31,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:31:31,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:31,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-07 04:31:31,723 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:31:32,529 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:33,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:33,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:33,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:33,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 04:31:33,433 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:31:33,434 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 13] total 35 [2019-11-07 04:31:33,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781101251] [2019-11-07 04:31:33,434 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 04:31:33,435 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:31:33,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 04:31:33,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:31:33,436 INFO L87 Difference]: Start difference. First operand 1175 states and 1426 transitions. Second operand 14 states. [2019-11-07 04:31:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:31:36,169 INFO L93 Difference]: Finished difference Result 3192 states and 4014 transitions. [2019-11-07 04:31:36,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:31:36,170 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 189 [2019-11-07 04:31:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:31:36,185 INFO L225 Difference]: With dead ends: 3192 [2019-11-07 04:31:36,185 INFO L226 Difference]: Without dead ends: 2042 [2019-11-07 04:31:36,190 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 355 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=386, Invalid=2476, Unknown=0, NotChecked=0, Total=2862 [2019-11-07 04:31:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2019-11-07 04:31:36,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1910. [2019-11-07 04:31:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-11-07 04:31:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2334 transitions. [2019-11-07 04:31:36,316 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2334 transitions. Word has length 189 [2019-11-07 04:31:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:31:36,317 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2334 transitions. [2019-11-07 04:31:36,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 04:31:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2334 transitions. [2019-11-07 04:31:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 04:31:36,325 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:31:36,326 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 04:31:36,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:31:36,534 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:31:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:31:36,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2112061461, now seen corresponding path program 1 times [2019-11-07 04:31:36,535 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:31:36,535 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230447679] [2019-11-07 04:31:36,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:31:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 41 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-07 04:31:37,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230447679] [2019-11-07 04:31:37,095 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586737852] [2019-11-07 04:31:37,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:31:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:31:37,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 56 conjunts are in the unsatisfiable core [2019-11-07 04:31:37,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:31:37,514 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:37,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:37,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:37,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 94 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:31:37,750 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:31:38,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:38,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:39,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:31:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 47 proven. 12 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-11-07 04:31:39,229 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [361426589] [2019-11-07 04:31:39,256 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2019-11-07 04:31:39,257 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:31:39,263 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:31:39,270 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:31:39,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:31:49,303 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-07 04:31:50,809 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:31:50,992 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:51,159 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:51,271 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:51,506 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:31:51,645 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:51,751 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-11-07 04:31:51,939 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:31:51,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-11-07 04:31:51,959 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-11-07 04:31:52,225 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:52,365 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:52,528 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:52,635 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:52,746 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:52,909 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:53,012 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:53,128 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:53,256 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:53,379 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:53,521 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:53,655 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:53,875 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:54,058 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:54,258 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:54,398 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:54,531 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:54,708 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:54,872 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:55,027 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:55,149 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:55,300 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:55,414 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:55,539 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:55,843 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 566 [2019-11-07 04:31:55,982 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:56,241 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:56,570 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 568 DAG size of output: 566 [2019-11-07 04:31:56,706 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-11-07 04:31:56,842 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:57,021 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:57,153 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:57,381 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:31:57,500 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:57,617 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:57,743 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-11-07 04:31:57,760 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 550 for LOIs [2019-11-07 04:31:57,950 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:58,137 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:58,364 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:58,498 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:58,601 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-11-07 04:31:58,727 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-11-07 04:31:58,734 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 550 for LOIs [2019-11-07 04:31:58,992 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-11-07 04:31:59,407 WARN L191 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 569 [2019-11-07 04:31:59,923 WARN L191 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 588 DAG size of output: 588