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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:22,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:22,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:22,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:22,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:22,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:22,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:22,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:22,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:22,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:22,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:22,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:22,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:22,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:22,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:22,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:22,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:22,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:22,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:22,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:22,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:22,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:22,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:22,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:22,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:22,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:22,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:22,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:22,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:22,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:22,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:22,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:22,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:22,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:22,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:22,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:22,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:22,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:22,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:22,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:22,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:22,380 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 03:20:22,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:22,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:22,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:22,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:22,410 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:22,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:22,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:22,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:22,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:22,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:22,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:22,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:22,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:22,412 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:22,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:22,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:22,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:22,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:22,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:22,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:22,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:22,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:22,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:22,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:22,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:22,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:22,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:22,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:22,415 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 03:20:22,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:22,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:22,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:22,710 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:22,710 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:22,711 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-10-15 03:20:22,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c523175a/deffc78d283f45eb95ca56310cf73f65/FLAG4092753c0 [2019-10-15 03:20:23,405 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:23,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-10-15 03:20:23,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c523175a/deffc78d283f45eb95ca56310cf73f65/FLAG4092753c0 [2019-10-15 03:20:23,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c523175a/deffc78d283f45eb95ca56310cf73f65 [2019-10-15 03:20:23,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:23,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:23,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:23,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:23,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:23,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:23" (1/1) ... [2019-10-15 03:20:23,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4772fc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:23, skipping insertion in model container [2019-10-15 03:20:23,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:23" (1/1) ... [2019-10-15 03:20:23,716 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:23,781 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:24,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:24,275 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:24,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:24,412 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:24,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24 WrapperNode [2019-10-15 03:20:24,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:24,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:24,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:24,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:24,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (1/1) ... [2019-10-15 03:20:24,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (1/1) ... [2019-10-15 03:20:24,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (1/1) ... [2019-10-15 03:20:24,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (1/1) ... [2019-10-15 03:20:24,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (1/1) ... [2019-10-15 03:20:24,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (1/1) ... [2019-10-15 03:20:24,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (1/1) ... [2019-10-15 03:20:24,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:24,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:24,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:24,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:24,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (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 03:20:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:24,585 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:20:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:24,586 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:24,587 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:20:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:24,588 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:24,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:24,590 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:24,591 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:24,601 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:24,602 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:20:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:20:24,607 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:24,608 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:26,298 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:26,298 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:26,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:26 BoogieIcfgContainer [2019-10-15 03:20:26,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:26,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:26,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:26,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:26,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:23" (1/3) ... [2019-10-15 03:20:26,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252af3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:26, skipping insertion in model container [2019-10-15 03:20:26,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:24" (2/3) ... [2019-10-15 03:20:26,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252af3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:26, skipping insertion in model container [2019-10-15 03:20:26,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:26" (3/3) ... [2019-10-15 03:20:26,308 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2019-10-15 03:20:26,318 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:26,327 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:26,339 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:26,368 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:26,368 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:26,369 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:26,369 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:26,369 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:26,369 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:26,369 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:26,369 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2019-10-15 03:20:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:26,404 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:26,406 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:26,408 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:26,414 INFO L82 PathProgramCache]: Analyzing trace with hash 150068610, now seen corresponding path program 1 times [2019-10-15 03:20:26,424 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:26,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002415887] [2019-10-15 03:20:26,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:26,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:26,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:26,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002415887] [2019-10-15 03:20:26,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:26,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:26,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689875703] [2019-10-15 03:20:26,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:26,783 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:26,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:26,799 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 2 states. [2019-10-15 03:20:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:26,851 INFO L93 Difference]: Finished difference Result 272 states and 337 transitions. [2019-10-15 03:20:26,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:26,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:26,871 INFO L225 Difference]: With dead ends: 272 [2019-10-15 03:20:26,871 INFO L226 Difference]: Without dead ends: 138 [2019-10-15 03:20:26,876 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 03:20:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-10-15 03:20:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-10-15 03:20:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-15 03:20:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2019-10-15 03:20:26,937 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 46 [2019-10-15 03:20:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:26,938 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2019-10-15 03:20:26,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2019-10-15 03:20:26,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:26,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:26,942 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:26,942 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:26,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:26,943 INFO L82 PathProgramCache]: Analyzing trace with hash -717210825, now seen corresponding path program 1 times [2019-10-15 03:20:26,943 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:26,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961998501] [2019-10-15 03:20:26,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:26,944 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:26,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:27,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961998501] [2019-10-15 03:20:27,061 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:27,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:27,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083523085] [2019-10-15 03:20:27,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:27,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:27,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:27,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:27,065 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand 3 states. [2019-10-15 03:20:27,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:27,113 INFO L93 Difference]: Finished difference Result 223 states and 265 transitions. [2019-10-15 03:20:27,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:27,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:27,120 INFO L225 Difference]: With dead ends: 223 [2019-10-15 03:20:27,121 INFO L226 Difference]: Without dead ends: 130 [2019-10-15 03:20:27,124 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 03:20:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-15 03:20:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2019-10-15 03:20:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-15 03:20:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2019-10-15 03:20:27,161 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 47 [2019-10-15 03:20:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:27,162 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2019-10-15 03:20:27,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2019-10-15 03:20:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-15 03:20:27,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:27,165 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:27,165 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:27,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:27,166 INFO L82 PathProgramCache]: Analyzing trace with hash 95871542, now seen corresponding path program 1 times [2019-10-15 03:20:27,166 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:27,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441464418] [2019-10-15 03:20:27,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:27,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441464418] [2019-10-15 03:20:27,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:27,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:27,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329365357] [2019-10-15 03:20:27,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:27,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:27,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:27,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:27,360 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand 7 states. [2019-10-15 03:20:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:27,929 INFO L93 Difference]: Finished difference Result 385 states and 468 transitions. [2019-10-15 03:20:27,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:27,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2019-10-15 03:20:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:27,934 INFO L225 Difference]: With dead ends: 385 [2019-10-15 03:20:27,934 INFO L226 Difference]: Without dead ends: 280 [2019-10-15 03:20:27,935 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 03:20:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2019-10-15 03:20:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 272. [2019-10-15 03:20:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2019-10-15 03:20:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 330 transitions. [2019-10-15 03:20:27,973 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 330 transitions. Word has length 50 [2019-10-15 03:20:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:27,974 INFO L462 AbstractCegarLoop]: Abstraction has 272 states and 330 transitions. [2019-10-15 03:20:27,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 330 transitions. [2019-10-15 03:20:27,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-15 03:20:27,977 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:27,978 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:27,978 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:27,978 INFO L82 PathProgramCache]: Analyzing trace with hash -370940796, now seen corresponding path program 1 times [2019-10-15 03:20:27,979 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:27,979 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332718640] [2019-10-15 03:20:27,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,979 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:27,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:28,143 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332718640] [2019-10-15 03:20:28,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:28,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:28,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866903106] [2019-10-15 03:20:28,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:28,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:28,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:28,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:28,146 INFO L87 Difference]: Start difference. First operand 272 states and 330 transitions. Second operand 6 states. [2019-10-15 03:20:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:28,415 INFO L93 Difference]: Finished difference Result 748 states and 927 transitions. [2019-10-15 03:20:28,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:28,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-15 03:20:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:28,420 INFO L225 Difference]: With dead ends: 748 [2019-10-15 03:20:28,421 INFO L226 Difference]: Without dead ends: 501 [2019-10-15 03:20:28,422 INFO L600 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 [2019-10-15 03:20:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2019-10-15 03:20:28,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 489. [2019-10-15 03:20:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-15 03:20:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 597 transitions. [2019-10-15 03:20:28,476 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 597 transitions. Word has length 55 [2019-10-15 03:20:28,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:28,477 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 597 transitions. [2019-10-15 03:20:28,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:28,477 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 597 transitions. [2019-10-15 03:20:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-15 03:20:28,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:28,481 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:28,481 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash 52511295, now seen corresponding path program 1 times [2019-10-15 03:20:28,482 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:28,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252880251] [2019-10-15 03:20:28,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:28,482 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:28,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:28,603 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252880251] [2019-10-15 03:20:28,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:28,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:28,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642523558] [2019-10-15 03:20:28,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:28,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:28,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:28,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:28,606 INFO L87 Difference]: Start difference. First operand 489 states and 597 transitions. Second operand 7 states. [2019-10-15 03:20:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:29,364 INFO L93 Difference]: Finished difference Result 1295 states and 1700 transitions. [2019-10-15 03:20:29,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:20:29,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-15 03:20:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:29,371 INFO L225 Difference]: With dead ends: 1295 [2019-10-15 03:20:29,371 INFO L226 Difference]: Without dead ends: 831 [2019-10-15 03:20:29,373 INFO L600 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 [2019-10-15 03:20:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2019-10-15 03:20:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 744. [2019-10-15 03:20:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2019-10-15 03:20:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 896 transitions. [2019-10-15 03:20:29,441 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 896 transitions. Word has length 58 [2019-10-15 03:20:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:29,442 INFO L462 AbstractCegarLoop]: Abstraction has 744 states and 896 transitions. [2019-10-15 03:20:29,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 896 transitions. [2019-10-15 03:20:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 03:20:29,448 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:29,449 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:29,449 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:29,450 INFO L82 PathProgramCache]: Analyzing trace with hash 310914581, now seen corresponding path program 1 times [2019-10-15 03:20:29,450 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:29,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568086021] [2019-10-15 03:20:29,450 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:29,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:29,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:20:29,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568086021] [2019-10-15 03:20:29,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172076806] [2019-10-15 03:20:29,691 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 03:20:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:29,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:20:29,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:29,966 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 03:20:29,967 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:30,175 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 03:20:30,175 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:20:30,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-15 03:20:30,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364536012] [2019-10-15 03:20:30,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:30,177 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:30,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:30,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:30,178 INFO L87 Difference]: Start difference. First operand 744 states and 896 transitions. Second operand 3 states. [2019-10-15 03:20:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:30,243 INFO L93 Difference]: Finished difference Result 1062 states and 1305 transitions. [2019-10-15 03:20:30,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:30,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2019-10-15 03:20:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:30,250 INFO L225 Difference]: With dead ends: 1062 [2019-10-15 03:20:30,250 INFO L226 Difference]: Without dead ends: 1059 [2019-10-15 03:20:30,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2019-10-15 03:20:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1031. [2019-10-15 03:20:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-15 03:20:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1268 transitions. [2019-10-15 03:20:30,322 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1268 transitions. Word has length 93 [2019-10-15 03:20:30,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:30,322 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1268 transitions. [2019-10-15 03:20:30,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1268 transitions. [2019-10-15 03:20:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 03:20:30,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:30,330 INFO L380 BasicCegarLoop]: trace histogram [5, 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, 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] [2019-10-15 03:20:30,535 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:30,536 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash -267507620, now seen corresponding path program 1 times [2019-10-15 03:20:30,536 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:30,537 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191781450] [2019-10-15 03:20:30,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:30,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:30,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-15 03:20:30,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191781450] [2019-10-15 03:20:30,783 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999759155] [2019-10-15 03:20:30,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:31,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:20:31,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 37 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 03:20:31,140 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:31,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:31,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 03:20:31,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [235581980] [2019-10-15 03:20:31,648 INFO L162 IcfgInterpreter]: Started Sifa with 103 locations of interest [2019-10-15 03:20:31,648 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:31,655 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:31,664 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:31,665 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:41,572 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:20:43,387 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:20:43,556 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:43,692 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:43,855 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:20:44,108 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:44,394 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:44,650 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:44,912 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:45,277 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:20:45,475 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:45,648 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:45,783 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:45,911 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:46,059 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:20:46,070 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:20:46,328 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-10-15 03:20:46,457 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:46,580 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:46,757 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:46,871 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:46,977 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:47,107 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:47,300 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:47,532 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:47,784 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 550 [2019-10-15 03:20:47,928 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:48,128 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:48,243 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:48,463 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:48,571 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:48,727 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:48,848 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,169 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,279 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:49,408 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:49,528 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:49,845 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,056 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,176 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,494 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,596 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:50,828 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:50,945 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,052 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-15 03:20:51,171 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,311 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,422 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,573 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,728 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,844 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:51,973 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,083 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,194 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,314 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:52,448 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:52,561 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:52,701 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:52,943 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:20:53,063 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:53,192 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:53,395 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:20:53,509 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:53,631 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:53,756 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:53,867 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:54,004 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,117 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,230 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,364 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:54,503 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,615 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:54,754 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:54,966 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:20:55,087 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,222 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:55,334 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,446 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:55,568 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:55,701 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,816 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:55,939 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,053 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,165 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,287 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,396 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,518 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,643 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:56,890 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:20:57,002 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,127 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,348 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:20:57,460 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,601 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,712 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,825 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:57,950 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:58,151 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:20:58,270 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:20:58,398 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:58,603 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:20:58,714 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:20:58,853 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:20:58,978 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,104 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,236 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,348 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,458 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,587 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,698 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,810 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:20:59,931 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,064 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,174 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,308 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,421 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,533 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,656 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,766 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,876 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:00,996 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:01,247 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:21:01,370 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:01,502 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:01,701 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:21:01,823 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:21:01,950 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:02,139 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:21:02,249 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:21:02,369 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:02,581 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-15 03:21:02,692 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:02,816 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:03,027 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-15 03:21:03,140 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:21:03,265 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:21:03,660 WARN L191 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-15 03:21:03,837 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:21:03,973 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:21:04,182 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570