/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:33:59,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:33:59,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:33:59,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:33:59,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:33:59,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:33:59,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:33:59,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:33:59,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:33:59,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:33:59,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:33:59,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:33:59,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:33:59,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:33:59,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:33:59,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:33:59,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:33:59,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:33:59,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:33:59,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:33:59,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:33:59,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:33:59,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:33:59,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:33:59,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:33:59,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:33:59,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:33:59,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:33:59,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:33:59,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:33:59,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:33:59,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:33:59,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:33:59,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:33:59,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:33:59,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:33:59,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:33:59,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:33:59,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:33:59,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:33:59,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:33:59,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:33:59,468 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:33:59,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:33:59,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:33:59,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:33:59,470 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:33:59,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:33:59,471 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:33:59,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:33:59,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:33:59,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:33:59,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:33:59,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:33:59,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:33:59,473 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:33:59,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:33:59,474 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:33:59,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:33:59,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:33:59,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:33:59,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:33:59,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:33:59,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:33:59,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:33:59,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:33:59,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:33:59,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:33:59,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:33:59,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:33:59,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:33:59,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:33:59,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:33:59,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:33:59,782 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:33:59,782 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:33:59,783 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-11-07 04:33:59,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3888a51e/ea1b5003086440a8ad4057204dc7f1c1/FLAG23a9d7e0d [2019-11-07 04:34:00,399 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:34:00,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-11-07 04:34:00,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3888a51e/ea1b5003086440a8ad4057204dc7f1c1/FLAG23a9d7e0d [2019-11-07 04:34:00,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3888a51e/ea1b5003086440a8ad4057204dc7f1c1 [2019-11-07 04:34:00,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:34:00,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:34:00,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:34:00,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:34:00,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:34:00,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:34:00" (1/1) ... [2019-11-07 04:34:00,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee79b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:00, skipping insertion in model container [2019-11-07 04:34:00,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:34:00" (1/1) ... [2019-11-07 04:34:00,719 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:34:00,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:34:01,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:34:01,304 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:34:01,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:34:01,458 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:34:01,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01 WrapperNode [2019-11-07 04:34:01,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:34:01,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:34:01,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:34:01,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:34:01,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... [2019-11-07 04:34:01,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... [2019-11-07 04:34:01,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... [2019-11-07 04:34:01,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... [2019-11-07 04:34:01,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... [2019-11-07 04:34:01,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... [2019-11-07 04:34:01,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... [2019-11-07 04:34:01,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:34:01,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:34:01,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:34:01,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:34:01,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:34:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:34:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:34:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:34:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:34:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:34:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:34:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:34:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:34:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:34:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:34:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:34:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:34:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-07 04:34:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:34:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-07 04:34:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-07 04:34:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:34:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-07 04:34:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-07 04:34:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-07 04:34:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-07 04:34:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-07 04:34:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-07 04:34:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-07 04:34:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-07 04:34:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-07 04:34:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:34:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:34:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:34:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:34:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:34:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:34:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-07 04:34:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-07 04:34:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-07 04:34:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-07 04:34:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-07 04:34:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-07 04:34:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-07 04:34:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-07 04:34:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:34:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:34:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:34:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:34:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:34:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:34:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:34:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:34:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:34:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-07 04:34:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-07 04:34:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-07 04:34:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:34:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:34:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:34:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:34:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:34:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:34:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:34:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:34:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:34:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-07 04:34:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-07 04:34:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-07 04:34:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-07 04:34:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-07 04:34:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-07 04:34:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-07 04:34:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-07 04:34:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-07 04:34:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-07 04:34:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-07 04:34:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-07 04:34:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-07 04:34:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-07 04:34:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-07 04:34:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-07 04:34:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-07 04:34:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-07 04:34:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-07 04:34:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-07 04:34:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:34:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:34:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:34:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:34:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:34:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:34:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:34:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:34:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:34:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:34:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:34:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:34:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:34:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:34:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:34:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:34:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:34:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:34:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:34:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:34:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:34:03,302 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:34:03,302 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-07 04:34:03,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:34:03 BoogieIcfgContainer [2019-11-07 04:34:03,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:34:03,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:34:03,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:34:03,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:34:03,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:34:00" (1/3) ... [2019-11-07 04:34:03,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e56b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:34:03, skipping insertion in model container [2019-11-07 04:34:03,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:34:01" (2/3) ... [2019-11-07 04:34:03,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e56b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:34:03, skipping insertion in model container [2019-11-07 04:34:03,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:34:03" (3/3) ... [2019-11-07 04:34:03,315 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product64.cil.c [2019-11-07 04:34:03,325 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:34:03,335 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:34:03,347 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:34:03,388 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:34:03,389 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:34:03,389 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:34:03,390 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:34:03,390 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:34:03,390 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:34:03,392 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:34:03,392 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:34:03,422 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2019-11-07 04:34:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 04:34:03,434 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:03,435 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:03,437 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash -958260662, now seen corresponding path program 1 times [2019-11-07 04:34:03,453 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:03,453 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394035220] [2019-11-07 04:34:03,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:03,819 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394035220] [2019-11-07 04:34:03,821 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:03,821 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:34:03,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133703221] [2019-11-07 04:34:03,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:34:03,830 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:03,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:34:03,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:34:03,855 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 2 states. [2019-11-07 04:34:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:03,949 INFO L93 Difference]: Finished difference Result 277 states and 338 transitions. [2019-11-07 04:34:03,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:34:03,952 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-11-07 04:34:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:03,978 INFO L225 Difference]: With dead ends: 277 [2019-11-07 04:34:03,979 INFO L226 Difference]: Without dead ends: 139 [2019-11-07 04:34:03,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:34:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-11-07 04:34:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-11-07 04:34:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-11-07 04:34:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2019-11-07 04:34:04,074 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 42 [2019-11-07 04:34:04,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:04,075 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2019-11-07 04:34:04,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:34:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2019-11-07 04:34:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-07 04:34:04,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:04,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:04,085 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:04,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:04,086 INFO L82 PathProgramCache]: Analyzing trace with hash -259571496, now seen corresponding path program 1 times [2019-11-07 04:34:04,086 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:04,086 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089206905] [2019-11-07 04:34:04,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:04,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089206905] [2019-11-07 04:34:04,257 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:04,257 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:34:04,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706128448] [2019-11-07 04:34:04,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:34:04,260 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:04,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:34:04,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:34:04,261 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 3 states. [2019-11-07 04:34:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:04,296 INFO L93 Difference]: Finished difference Result 225 states and 263 transitions. [2019-11-07 04:34:04,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:34:04,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-11-07 04:34:04,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:04,300 INFO L225 Difference]: With dead ends: 225 [2019-11-07 04:34:04,300 INFO L226 Difference]: Without dead ends: 131 [2019-11-07 04:34:04,303 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:34:04,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-07 04:34:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-11-07 04:34:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-07 04:34:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2019-11-07 04:34:04,328 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 43 [2019-11-07 04:34:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:04,328 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2019-11-07 04:34:04,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:34:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2019-11-07 04:34:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 04:34:04,330 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:04,331 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:04,331 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1408950885, now seen corresponding path program 1 times [2019-11-07 04:34:04,332 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:04,332 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690974802] [2019-11-07 04:34:04,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:04,514 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690974802] [2019-11-07 04:34:04,515 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:04,515 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:34:04,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759424770] [2019-11-07 04:34:04,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:34:04,517 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:04,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:34:04,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:34:04,518 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand 7 states. [2019-11-07 04:34:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:05,041 INFO L93 Difference]: Finished difference Result 394 states and 472 transitions. [2019-11-07 04:34:05,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:34:05,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-11-07 04:34:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:05,046 INFO L225 Difference]: With dead ends: 394 [2019-11-07 04:34:05,046 INFO L226 Difference]: Without dead ends: 285 [2019-11-07 04:34:05,047 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:34:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2019-11-07 04:34:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 273. [2019-11-07 04:34:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2019-11-07 04:34:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 326 transitions. [2019-11-07 04:34:05,084 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 326 transitions. Word has length 47 [2019-11-07 04:34:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:05,085 INFO L462 AbstractCegarLoop]: Abstraction has 273 states and 326 transitions. [2019-11-07 04:34:05,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:34:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 326 transitions. [2019-11-07 04:34:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 04:34:05,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:05,087 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:05,087 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:05,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2043331859, now seen corresponding path program 1 times [2019-11-07 04:34:05,088 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:05,088 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245230945] [2019-11-07 04:34:05,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:05,297 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245230945] [2019-11-07 04:34:05,297 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:05,298 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:34:05,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408014346] [2019-11-07 04:34:05,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:34:05,299 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:05,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:34:05,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:34:05,301 INFO L87 Difference]: Start difference. First operand 273 states and 326 transitions. Second operand 10 states. [2019-11-07 04:34:06,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:06,009 INFO L93 Difference]: Finished difference Result 987 states and 1226 transitions. [2019-11-07 04:34:06,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 04:34:06,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-11-07 04:34:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:06,026 INFO L225 Difference]: With dead ends: 987 [2019-11-07 04:34:06,026 INFO L226 Difference]: Without dead ends: 736 [2019-11-07 04:34:06,031 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:34:06,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2019-11-07 04:34:06,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 712. [2019-11-07 04:34:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2019-11-07 04:34:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 869 transitions. [2019-11-07 04:34:06,121 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 869 transitions. Word has length 51 [2019-11-07 04:34:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:06,121 INFO L462 AbstractCegarLoop]: Abstraction has 712 states and 869 transitions. [2019-11-07 04:34:06,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:34:06,122 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 869 transitions. [2019-11-07 04:34:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-07 04:34:06,125 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:06,125 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:06,125 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:06,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1738769015, now seen corresponding path program 1 times [2019-11-07 04:34:06,126 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:06,126 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619156275] [2019-11-07 04:34:06,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:34:06,218 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619156275] [2019-11-07 04:34:06,219 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:06,219 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:34:06,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361413097] [2019-11-07 04:34:06,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:34:06,220 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:06,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:34:06,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:34:06,221 INFO L87 Difference]: Start difference. First operand 712 states and 869 transitions. Second operand 4 states. [2019-11-07 04:34:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:06,631 INFO L93 Difference]: Finished difference Result 1738 states and 2275 transitions. [2019-11-07 04:34:06,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:34:06,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-11-07 04:34:06,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:06,645 INFO L225 Difference]: With dead ends: 1738 [2019-11-07 04:34:06,646 INFO L226 Difference]: Without dead ends: 1048 [2019-11-07 04:34:06,650 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:34:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2019-11-07 04:34:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 915. [2019-11-07 04:34:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2019-11-07 04:34:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1078 transitions. [2019-11-07 04:34:06,745 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1078 transitions. Word has length 54 [2019-11-07 04:34:06,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:06,747 INFO L462 AbstractCegarLoop]: Abstraction has 915 states and 1078 transitions. [2019-11-07 04:34:06,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:34:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1078 transitions. [2019-11-07 04:34:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-07 04:34:06,753 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:06,753 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:06,753 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:06,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1908087697, now seen corresponding path program 1 times [2019-11-07 04:34:06,754 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:06,754 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727153097] [2019-11-07 04:34:06,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:34:06,922 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727153097] [2019-11-07 04:34:06,922 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349378086] [2019-11-07 04:34:06,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:07,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 04:34:07,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:34:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:34:07,177 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:34:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 04:34:07,307 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 04:34:07,307 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-11-07 04:34:07,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121043653] [2019-11-07 04:34:07,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:34:07,341 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:07,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:34:07,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-07 04:34:07,341 INFO L87 Difference]: Start difference. First operand 915 states and 1078 transitions. Second operand 7 states. [2019-11-07 04:34:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:07,608 INFO L93 Difference]: Finished difference Result 928 states and 1094 transitions. [2019-11-07 04:34:07,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:34:07,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2019-11-07 04:34:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:07,616 INFO L225 Difference]: With dead ends: 928 [2019-11-07 04:34:07,616 INFO L226 Difference]: Without dead ends: 925 [2019-11-07 04:34:07,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:34:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2019-11-07 04:34:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 915. [2019-11-07 04:34:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2019-11-07 04:34:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1075 transitions. [2019-11-07 04:34:07,675 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1075 transitions. Word has length 79 [2019-11-07 04:34:07,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:07,675 INFO L462 AbstractCegarLoop]: Abstraction has 915 states and 1075 transitions. [2019-11-07 04:34:07,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:34:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1075 transitions. [2019-11-07 04:34:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:34:07,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:07,680 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:07,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:07,886 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2132943944, now seen corresponding path program 1 times [2019-11-07 04:34:07,887 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:07,887 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437718736] [2019-11-07 04:34:07,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 04:34:07,976 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437718736] [2019-11-07 04:34:07,976 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:34:07,976 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:34:07,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475017907] [2019-11-07 04:34:07,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:34:07,977 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:34:07,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:34:07,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:34:07,978 INFO L87 Difference]: Start difference. First operand 915 states and 1075 transitions. Second operand 3 states. [2019-11-07 04:34:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:34:08,043 INFO L93 Difference]: Finished difference Result 1444 states and 1702 transitions. [2019-11-07 04:34:08,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:34:08,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 04:34:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:34:08,048 INFO L225 Difference]: With dead ends: 1444 [2019-11-07 04:34:08,048 INFO L226 Difference]: Without dead ends: 551 [2019-11-07 04:34:08,051 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:34:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2019-11-07 04:34:08,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 536. [2019-11-07 04:34:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2019-11-07 04:34:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 619 transitions. [2019-11-07 04:34:08,085 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 619 transitions. Word has length 119 [2019-11-07 04:34:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:34:08,086 INFO L462 AbstractCegarLoop]: Abstraction has 536 states and 619 transitions. [2019-11-07 04:34:08,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:34:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 619 transitions. [2019-11-07 04:34:08,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:34:08,089 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:34:08,090 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:34:08,090 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:34:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:34:08,090 INFO L82 PathProgramCache]: Analyzing trace with hash -244700974, now seen corresponding path program 1 times [2019-11-07 04:34:08,091 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:34:08,091 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366630764] [2019-11-07 04:34:08,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:34:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:34:08,347 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366630764] [2019-11-07 04:34:08,348 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66887300] [2019-11-07 04:34:08,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:34:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:34:08,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 49 conjunts are in the unsatisfiable core [2019-11-07 04:34:08,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:34:08,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:34:08,747 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:34:09,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:09,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:09,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:09,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:34:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 04:34:09,610 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [874441138] [2019-11-07 04:34:09,637 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2019-11-07 04:34:09,637 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:34:09,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:34:09,650 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:34:09,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:34:20,589 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-11-07 04:34:22,361 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-07 04:34:22,487 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:22,693 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:22,828 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:23,066 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:34:23,182 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:23,315 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-11-07 04:34:23,505 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:34:23,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-11-07 04:34:23,524 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-11-07 04:34:23,779 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:23,968 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:24,201 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:24,355 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:24,485 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:24,637 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:24,759 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:24,875 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:24,996 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:25,110 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:25,266 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-11-07 04:34:25,386 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:25,540 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:25,664 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:25,833 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:25,950 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,062 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,178 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,285 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,434 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,629 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,756 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:26,889 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,052 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-11-07 04:34:27,255 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:27,363 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:27,491 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:27,598 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:27,705 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:27,828 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-11-07 04:34:28,029 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:34:28,141 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:34:28,271 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:34:28,381 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:34:28,491 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:34:28,610 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-11-07 04:34:28,629 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 546 for LOIs [2019-11-07 04:34:28,649 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 544 for LOIs [2019-11-07 04:34:28,918 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 557 [2019-11-07 04:34:29,311 WARN L191 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:34:29,915 WARN L191 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 571 DAG size of output: 571 [2019-11-07 04:34:30,342 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-11-07 04:34:30,670 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-11-07 04:34:31,270 WARN L191 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 584 DAG size of output: 584 [2019-11-07 04:34:31,567 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 580 DAG size of output: 580 [2019-11-07 04:34:31,925 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-11-07 04:34:32,393 WARN L191 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 584 DAG size of output: 584 [2019-11-07 04:34:33,018 WARN L191 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 597 DAG size of output: 597 [2019-11-07 04:34:33,669 WARN L191 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 597 DAG size of output: 597 [2019-11-07 04:34:34,226 WARN L191 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 609 [2019-11-07 04:34:34,684 WARN L191 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 609 DAG size of output: 609 [2019-11-07 04:34:35,355 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 597 [2019-11-07 04:34:35,507 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 597 [2019-11-07 04:34:35,673 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 598 DAG size of output: 598 [2019-11-07 04:34:35,856 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 597 [2019-11-07 04:34:37,013 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 185 [2019-11-07 04:34:37,629 WARN L191 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 597 [2019-11-07 04:34:37,992 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 597