java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:23:30,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:23:30,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:23:30,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:23:30,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:23:30,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:23:30,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:23:30,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:23:30,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:23:30,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:23:30,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:23:30,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:23:30,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:23:30,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:23:30,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:23:30,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:23:30,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:23:30,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:23:30,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:23:30,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:23:30,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:23:30,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:23:30,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:23:30,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:23:30,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:23:30,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:23:30,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:23:30,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:23:30,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:23:30,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:23:30,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:23:30,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:23:30,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:23:30,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:23:30,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:23:30,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:23:30,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:23:30,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:23:30,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:23:30,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:23:30,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:23:30,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:23:30,290 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:23:30,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:23:30,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:23:30,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:23:30,292 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:23:30,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:23:30,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:23:30,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:23:30,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:23:30,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:23:30,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:23:30,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:23:30,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:23:30,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:23:30,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:23:30,294 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:23:30,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:23:30,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:23:30,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:23:30,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:23:30,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:23:30,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:30,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:23:30,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:23:30,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:23:30,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:23:30,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:23:30,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:23:30,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:23:30,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:23:30,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:23:30,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:23:30,631 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:23:30,631 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:23:30,632 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-15 03:23:30,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f9c9e0c/b10997ebbc5c43e48338138fa91358a2/FLAG5b1946864 [2019-10-15 03:23:31,272 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:23:31,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2019-10-15 03:23:31,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f9c9e0c/b10997ebbc5c43e48338138fa91358a2/FLAG5b1946864 [2019-10-15 03:23:31,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72f9c9e0c/b10997ebbc5c43e48338138fa91358a2 [2019-10-15 03:23:31,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:23:31,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:23:31,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:31,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:23:31,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:23:31,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2fb7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:31, skipping insertion in model container [2019-10-15 03:23:31,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:23:31" (1/1) ... [2019-10-15 03:23:31,669 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:23:31,733 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:23:32,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:32,231 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:23:32,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:23:32,377 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:23:32,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32 WrapperNode [2019-10-15 03:23:32,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:23:32,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:23:32,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:23:32,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:23:32,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... [2019-10-15 03:23:32,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... [2019-10-15 03:23:32,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... [2019-10-15 03:23:32,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... [2019-10-15 03:23:32,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... [2019-10-15 03:23:32,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... [2019-10-15 03:23:32,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... [2019-10-15 03:23:32,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:23:32,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:23:32,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:23:32,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:23:32,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:23:32,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:23:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:23:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:23:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:23:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:23:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:23:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:23:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:23:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:23:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:23:32,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:23:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:23:32,592 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:23:32,593 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:23:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:23:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:23:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:23:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:23:32,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:23:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:23:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:23:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:23:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:23:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:23:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:23:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:23:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:23:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:23:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:23:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:23:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:23:32,597 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:23:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:23:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:23:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:23:32,598 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:23:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:23:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:23:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:23:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:23:32,599 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:23:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:23:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:23:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:23:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:23:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:23:32,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:23:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:23:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:23:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:23:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:23:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:23:32,601 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:23:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:23:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:23:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:23:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:23:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:23:32,602 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:23:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:23:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:23:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:23:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:23:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:23:32,603 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:23:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:23:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:23:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:23:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:23:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:23:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:23:32,604 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:23:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:23:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:23:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:23:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:23:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:23:32,605 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:23:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:23:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:23:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:23:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:23:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:23:32,606 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:23:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:23:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:23:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:23:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:23:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:23:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:23:32,607 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:23:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:23:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:23:32,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:23:34,370 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:23:34,370 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:23:34,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:34 BoogieIcfgContainer [2019-10-15 03:23:34,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:23:34,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:23:34,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:23:34,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:23:34,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:23:31" (1/3) ... [2019-10-15 03:23:34,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bff8be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:34, skipping insertion in model container [2019-10-15 03:23:34,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:23:32" (2/3) ... [2019-10-15 03:23:34,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bff8be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:34, skipping insertion in model container [2019-10-15 03:23:34,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:34" (3/3) ... [2019-10-15 03:23:34,384 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2019-10-15 03:23:34,396 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:23:34,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:23:34,419 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:23:34,463 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:23:34,463 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:23:34,465 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:23:34,465 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:23:34,465 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:23:34,465 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:23:34,467 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:23:34,468 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:23:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2019-10-15 03:23:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:23:34,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:34,518 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:34,521 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash -154718265, now seen corresponding path program 1 times [2019-10-15 03:23:34,539 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:34,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914080246] [2019-10-15 03:23:34,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,543 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:34,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:34,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914080246] [2019-10-15 03:23:34,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:34,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:23:34,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197936811] [2019-10-15 03:23:34,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:23:34,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:34,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:23:34,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:34,962 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 2 states. [2019-10-15 03:23:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:35,003 INFO L93 Difference]: Finished difference Result 244 states and 297 transitions. [2019-10-15 03:23:35,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:23:35,005 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:23:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:35,020 INFO L225 Difference]: With dead ends: 244 [2019-10-15 03:23:35,020 INFO L226 Difference]: Without dead ends: 124 [2019-10-15 03:23:35,025 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:23:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-10-15 03:23:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2019-10-15 03:23:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-15 03:23:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2019-10-15 03:23:35,087 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2019-10-15 03:23:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:35,088 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2019-10-15 03:23:35,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:23:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2019-10-15 03:23:35,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:23:35,092 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:35,092 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:35,093 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:35,093 INFO L82 PathProgramCache]: Analyzing trace with hash -213368300, now seen corresponding path program 1 times [2019-10-15 03:23:35,094 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:35,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152891519] [2019-10-15 03:23:35,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:35,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152891519] [2019-10-15 03:23:35,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:35,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:23:35,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676555594] [2019-10-15 03:23:35,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:23:35,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:35,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:23:35,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:35,224 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 3 states. [2019-10-15 03:23:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:35,276 INFO L93 Difference]: Finished difference Result 192 states and 222 transitions. [2019-10-15 03:23:35,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:23:35,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:23:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:35,279 INFO L225 Difference]: With dead ends: 192 [2019-10-15 03:23:35,279 INFO L226 Difference]: Without dead ends: 116 [2019-10-15 03:23:35,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:23:35,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-10-15 03:23:35,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2019-10-15 03:23:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-10-15 03:23:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2019-10-15 03:23:35,310 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 53 [2019-10-15 03:23:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:35,311 INFO L462 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2019-10-15 03:23:35,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:23:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2019-10-15 03:23:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 03:23:35,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:35,314 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:35,314 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:35,315 INFO L82 PathProgramCache]: Analyzing trace with hash 761500064, now seen corresponding path program 1 times [2019-10-15 03:23:35,315 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:35,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952674345] [2019-10-15 03:23:35,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:35,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:35,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952674345] [2019-10-15 03:23:35,589 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:35,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:35,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816736108] [2019-10-15 03:23:35,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:35,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:35,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:35,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:35,593 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 7 states. [2019-10-15 03:23:36,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:36,099 INFO L93 Difference]: Finished difference Result 348 states and 416 transitions. [2019-10-15 03:23:36,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:23:36,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-15 03:23:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:36,103 INFO L225 Difference]: With dead ends: 348 [2019-10-15 03:23:36,103 INFO L226 Difference]: Without dead ends: 257 [2019-10-15 03:23:36,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:23:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-10-15 03:23:36,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 245. [2019-10-15 03:23:36,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-10-15 03:23:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 292 transitions. [2019-10-15 03:23:36,140 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 292 transitions. Word has length 57 [2019-10-15 03:23:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:36,141 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 292 transitions. [2019-10-15 03:23:36,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 292 transitions. [2019-10-15 03:23:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:23:36,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:36,145 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:36,145 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:36,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1246641193, now seen corresponding path program 1 times [2019-10-15 03:23:36,146 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:36,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95867420] [2019-10-15 03:23:36,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:36,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:36,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:23:36,322 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95867420] [2019-10-15 03:23:36,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:36,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:23:36,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580664567] [2019-10-15 03:23:36,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:23:36,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:36,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:23:36,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:23:36,324 INFO L87 Difference]: Start difference. First operand 245 states and 292 transitions. Second operand 7 states. [2019-10-15 03:23:37,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:37,077 INFO L93 Difference]: Finished difference Result 634 states and 825 transitions. [2019-10-15 03:23:37,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:23:37,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:23:37,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:37,084 INFO L225 Difference]: With dead ends: 634 [2019-10-15 03:23:37,084 INFO L226 Difference]: Without dead ends: 414 [2019-10-15 03:23:37,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:23:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-10-15 03:23:37,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 363. [2019-10-15 03:23:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2019-10-15 03:23:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 432 transitions. [2019-10-15 03:23:37,141 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 432 transitions. Word has length 61 [2019-10-15 03:23:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:37,142 INFO L462 AbstractCegarLoop]: Abstraction has 363 states and 432 transitions. [2019-10-15 03:23:37,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:23:37,143 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 432 transitions. [2019-10-15 03:23:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-10-15 03:23:37,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:37,145 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:37,146 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:37,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:37,146 INFO L82 PathProgramCache]: Analyzing trace with hash -44191392, now seen corresponding path program 1 times [2019-10-15 03:23:37,147 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:37,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164592147] [2019-10-15 03:23:37,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:37,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:37,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164592147] [2019-10-15 03:23:37,416 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:37,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:23:37,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040702255] [2019-10-15 03:23:37,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:23:37,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:37,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:23:37,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:23:37,418 INFO L87 Difference]: Start difference. First operand 363 states and 432 transitions. Second operand 12 states. [2019-10-15 03:23:38,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:38,318 INFO L93 Difference]: Finished difference Result 1110 states and 1343 transitions. [2019-10-15 03:23:38,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:23:38,320 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2019-10-15 03:23:38,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:38,328 INFO L225 Difference]: With dead ends: 1110 [2019-10-15 03:23:38,328 INFO L226 Difference]: Without dead ends: 772 [2019-10-15 03:23:38,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2019-10-15 03:23:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 750. [2019-10-15 03:23:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 750 states. [2019-10-15 03:23:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 896 transitions. [2019-10-15 03:23:38,436 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 896 transitions. Word has length 79 [2019-10-15 03:23:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:38,438 INFO L462 AbstractCegarLoop]: Abstraction has 750 states and 896 transitions. [2019-10-15 03:23:38,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:23:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 896 transitions. [2019-10-15 03:23:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-15 03:23:38,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:38,444 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:38,444 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:38,445 INFO L82 PathProgramCache]: Analyzing trace with hash -52921410, now seen corresponding path program 1 times [2019-10-15 03:23:38,445 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:38,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452830287] [2019-10-15 03:23:38,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:38,446 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:38,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:23:38,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452830287] [2019-10-15 03:23:38,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:23:38,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:23:38,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437128801] [2019-10-15 03:23:38,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:23:38,659 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:23:38,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:23:38,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:23:38,660 INFO L87 Difference]: Start difference. First operand 750 states and 896 transitions. Second operand 9 states. [2019-10-15 03:23:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:23:39,646 INFO L93 Difference]: Finished difference Result 2384 states and 2935 transitions. [2019-10-15 03:23:39,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:23:39,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2019-10-15 03:23:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:23:39,659 INFO L225 Difference]: With dead ends: 2384 [2019-10-15 03:23:39,660 INFO L226 Difference]: Without dead ends: 1821 [2019-10-15 03:23:39,663 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:23:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2019-10-15 03:23:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1541. [2019-10-15 03:23:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2019-10-15 03:23:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1857 transitions. [2019-10-15 03:23:39,774 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1857 transitions. Word has length 82 [2019-10-15 03:23:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:23:39,774 INFO L462 AbstractCegarLoop]: Abstraction has 1541 states and 1857 transitions. [2019-10-15 03:23:39,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:23:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1857 transitions. [2019-10-15 03:23:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 03:23:39,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:23:39,779 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:23:39,779 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:23:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:23:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash -189281527, now seen corresponding path program 1 times [2019-10-15 03:23:39,779 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:23:39,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966390332] [2019-10-15 03:23:39,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:39,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:23:39,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:23:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:39,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966390332] [2019-10-15 03:23:39,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170691431] [2019-10-15 03:23:39,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:23:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:23:40,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:23:40,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:23:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:23:40,356 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:23:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:23:40,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [540348827] [2019-10-15 03:23:40,806 INFO L162 IcfgInterpreter]: Started Sifa with 101 locations of interest [2019-10-15 03:23:40,807 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:23:40,816 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:23:40,838 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:23:40,839 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:23:50,880 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:23:52,729 WARN L191 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:23:52,884 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:53,031 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:53,170 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:23:53,433 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:53,775 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,019 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,292 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:54,704 WARN L191 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:23:54,896 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:55,086 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:55,283 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:55,406 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:55,534 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:23:55,544 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:23:55,912 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:23:55,914 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:23:56,079 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,199 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,333 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,454 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,571 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,750 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:56,869 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:56,984 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,121 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,357 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:23:57,490 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,655 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:57,769 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:57,872 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:58,031 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,156 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:58,382 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,484 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:58,708 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:58,824 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:59,059 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,160 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:59,384 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:23:59,498 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:59,622 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:23:59,746 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,070 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,408 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,615 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:00,740 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:00,925 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,052 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,179 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,472 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:01,586 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,719 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,833 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:01,948 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:02,072 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:02,213 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,346 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,480 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:02,687 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:02,802 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:02,936 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,133 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:03,252 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:03,414 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,532 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:03,647 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:03,782 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:03,901 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,018 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,149 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:04,290 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,409 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:04,688 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:05,210 WARN L191 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:05,401 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,571 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:05,686 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,802 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:05,930 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:06,206 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:06,323 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,457 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,697 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:06,813 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:06,940 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,055 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,181 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,306 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:07,450 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,567 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,698 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,822 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:07,938 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,073 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,190 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,307 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,432 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:08,652 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:08,767 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:08,950 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:09,159 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:09,275 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:09,410 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:09,629 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:09,745 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:09,874 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,087 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:10,203 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,333 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,445 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,558 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,680 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:10,901 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-15 03:24:11,025 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:11,160 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564