/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/elevator_spec2_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:09:57,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:09:57,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:09:57,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:09:57,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:09:57,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:09:57,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:09:57,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:09:57,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:09:57,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:09:57,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:09:57,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:09:57,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:09:57,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:09:57,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:09:57,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:09:57,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:09:57,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:09:57,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:09:57,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:09:57,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:09:57,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:09:57,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:09:57,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:09:57,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:09:57,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:09:57,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:09:57,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:09:57,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:09:57,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:09:57,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:09:57,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:09:57,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:09:57,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:09:57,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:09:57,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:09:57,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:09:57,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:09:57,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:09:57,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:09:57,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:09:57,540 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 04:09:57,554 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:09:57,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:09:57,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:09:57,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:09:57,556 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:09:57,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:09:57,556 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:09:57,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:09:57,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:09:57,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:09:57,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:09:57,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:09:57,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:09:57,557 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:09:57,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:09:57,558 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:09:57,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:09:57,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:09:57,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:09:57,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:09:57,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:09:57,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:09:57,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:09:57,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:09:57,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:09:57,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:09:57,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:09:57,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:09:57,560 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 04:09:57,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:09:57,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:09:57,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:09:57,905 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:09:57,905 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:09:57,906 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c [2019-11-07 04:09:57,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d024b11/79d3818760094268a4d07fff858bbc35/FLAG9589f5297 [2019-11-07 04:09:58,642 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:09:58,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product03.cil.c [2019-11-07 04:09:58,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d024b11/79d3818760094268a4d07fff858bbc35/FLAG9589f5297 [2019-11-07 04:09:58,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d024b11/79d3818760094268a4d07fff858bbc35 [2019-11-07 04:09:58,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:09:58,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:09:58,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:58,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:09:58,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:09:58,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:58" (1/1) ... [2019-11-07 04:09:58,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7e03ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:58, skipping insertion in model container [2019-11-07 04:09:58,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:09:58" (1/1) ... [2019-11-07 04:09:58,902 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:09:58,998 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:09:59,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:59,763 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:09:59,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:09:59,956 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:09:59,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59 WrapperNode [2019-11-07 04:09:59,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:09:59,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:09:59,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:09:59,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:09:59,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:09:59,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:10:00,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:10:00,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:10:00,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:10:00,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:10:00,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (1/1) ... [2019-11-07 04:10:00,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:10:00,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:10:00,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:10:00,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:10:00,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (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 04:10:00,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:10:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:10:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:10:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:10:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:10:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:10:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:10:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:10:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:10:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:10:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:10:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:10:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:10:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:10:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:10:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:10:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:10:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:10:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:10:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:10:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:10:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:10:00,264 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:10:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:10:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:10:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:10:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:10:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:10:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:10:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:10:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:10:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:10:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:10:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:10:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:10:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:10:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:10:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:10:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:10:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:10:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:10:00,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:10:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:10:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:10:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:10:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:10:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:10:00,269 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:10:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:10:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:10:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:10:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:10:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:10:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2019-11-07 04:10:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:10:00,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:10:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:10:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-11-07 04:10:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:10:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:10:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:10:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:10:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:10:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:10:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:10:00,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:00,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:00,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:00,275 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:10:00,276 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:10:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:10:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:10:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:10:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:10:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:10:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:10:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:10:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:10:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:10:00,279 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:10:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:10:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:10:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:10:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:10:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:10:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:10:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:10:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:10:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:10:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:10:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:10:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:10:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:10:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:10:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:10:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:10:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:10:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:10:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:10:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:10:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:10:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:10:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:10:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:10:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:10:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:10:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:10:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:10:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:10:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:10:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:10:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:10:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:10:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:10:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:10:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:10:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:10:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:10:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:10:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:10:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:10:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:10:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:10:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:10:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:10:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:10:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:10:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-07 04:10:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-11-07 04:10:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:10:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:10:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:10:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:10:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:10:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:10:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:10:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:10:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:10:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:10:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:10:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:10:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:10:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-07 04:10:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:10:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:10:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:10:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:10:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2019-11-07 04:10:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:10:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:10:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2019-11-07 04:10:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:10:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:10:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:10:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-11-07 04:10:00,310 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:10:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:10:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:10:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:10:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:10:00,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:10:05,258 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:10:05,259 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:10:05,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:05 BoogieIcfgContainer [2019-11-07 04:10:05,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:10:05,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:10:05,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:10:05,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:10:05,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:09:58" (1/3) ... [2019-11-07 04:10:05,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff4a18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:05, skipping insertion in model container [2019-11-07 04:10:05,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:09:59" (2/3) ... [2019-11-07 04:10:05,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff4a18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:05, skipping insertion in model container [2019-11-07 04:10:05,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:05" (3/3) ... [2019-11-07 04:10:05,269 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2019-11-07 04:10:05,279 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:10:05,289 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:10:05,301 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:10:05,333 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:10:05,333 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:10:05,333 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:10:05,333 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:10:05,334 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:10:05,334 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:10:05,334 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:10:05,334 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:10:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states. [2019-11-07 04:10:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-07 04:10:05,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:05,389 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:05,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:05,397 INFO L82 PathProgramCache]: Analyzing trace with hash 701582024, now seen corresponding path program 1 times [2019-11-07 04:10:05,407 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:05,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586881615] [2019-11-07 04:10:05,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:06,107 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586881615] [2019-11-07 04:10:06,108 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:06,108 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:10:06,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026097373] [2019-11-07 04:10:06,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:10:06,115 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:06,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:10:06,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:10:06,129 INFO L87 Difference]: Start difference. First operand 557 states. Second operand 2 states. [2019-11-07 04:10:06,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:06,201 INFO L93 Difference]: Finished difference Result 460 states and 690 transitions. [2019-11-07 04:10:06,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:10:06,203 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-11-07 04:10:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:06,225 INFO L225 Difference]: With dead ends: 460 [2019-11-07 04:10:06,226 INFO L226 Difference]: Without dead ends: 426 [2019-11-07 04:10:06,230 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 04:10:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-11-07 04:10:06,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2019-11-07 04:10:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-11-07 04:10:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 639 transitions. [2019-11-07 04:10:06,330 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 639 transitions. Word has length 112 [2019-11-07 04:10:06,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:06,333 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 639 transitions. [2019-11-07 04:10:06,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:10:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 639 transitions. [2019-11-07 04:10:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-07 04:10:06,342 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:06,342 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:06,342 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:06,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:06,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1004921316, now seen corresponding path program 1 times [2019-11-07 04:10:06,343 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:06,343 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26627100] [2019-11-07 04:10:06,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:06,733 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26627100] [2019-11-07 04:10:06,733 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:06,734 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:10:06,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812921714] [2019-11-07 04:10:06,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:10:06,737 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:06,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:10:06,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:10:06,738 INFO L87 Difference]: Start difference. First operand 426 states and 639 transitions. Second operand 7 states. [2019-11-07 04:10:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:10,435 INFO L93 Difference]: Finished difference Result 1205 states and 1854 transitions. [2019-11-07 04:10:10,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:10:10,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-11-07 04:10:10,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:10,445 INFO L225 Difference]: With dead ends: 1205 [2019-11-07 04:10:10,445 INFO L226 Difference]: Without dead ends: 821 [2019-11-07 04:10:10,452 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:10:10,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2019-11-07 04:10:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 796. [2019-11-07 04:10:10,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2019-11-07 04:10:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1221 transitions. [2019-11-07 04:10:10,540 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1221 transitions. Word has length 113 [2019-11-07 04:10:10,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:10,541 INFO L462 AbstractCegarLoop]: Abstraction has 796 states and 1221 transitions. [2019-11-07 04:10:10,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:10:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1221 transitions. [2019-11-07 04:10:10,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-07 04:10:10,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:10,552 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:10,553 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:10,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:10,553 INFO L82 PathProgramCache]: Analyzing trace with hash 262416038, now seen corresponding path program 1 times [2019-11-07 04:10:10,553 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:10,554 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63952774] [2019-11-07 04:10:10,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:10,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63952774] [2019-11-07 04:10:10,808 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:10,809 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:10,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928689382] [2019-11-07 04:10:10,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:10,812 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:10,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:10,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:10,813 INFO L87 Difference]: Start difference. First operand 796 states and 1221 transitions. Second operand 4 states. [2019-11-07 04:10:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:12,458 INFO L93 Difference]: Finished difference Result 2382 states and 3748 transitions. [2019-11-07 04:10:12,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:12,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-11-07 04:10:12,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:12,474 INFO L225 Difference]: With dead ends: 2382 [2019-11-07 04:10:12,475 INFO L226 Difference]: Without dead ends: 1628 [2019-11-07 04:10:12,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 04:10:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2019-11-07 04:10:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1530. [2019-11-07 04:10:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2019-11-07 04:10:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2393 transitions. [2019-11-07 04:10:12,750 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2393 transitions. Word has length 117 [2019-11-07 04:10:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:12,753 INFO L462 AbstractCegarLoop]: Abstraction has 1530 states and 2393 transitions. [2019-11-07 04:10:12,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2393 transitions. [2019-11-07 04:10:12,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-11-07 04:10:12,763 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:12,763 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:12,764 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:12,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:12,764 INFO L82 PathProgramCache]: Analyzing trace with hash -456335281, now seen corresponding path program 1 times [2019-11-07 04:10:12,765 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:12,765 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21720865] [2019-11-07 04:10:12,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:12,980 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21720865] [2019-11-07 04:10:12,980 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:12,981 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:12,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805307394] [2019-11-07 04:10:12,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:12,982 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:12,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:12,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:12,982 INFO L87 Difference]: Start difference. First operand 1530 states and 2393 transitions. Second operand 4 states. [2019-11-07 04:10:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:14,796 INFO L93 Difference]: Finished difference Result 4531 states and 7246 transitions. [2019-11-07 04:10:14,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:14,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-11-07 04:10:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:14,828 INFO L225 Difference]: With dead ends: 4531 [2019-11-07 04:10:14,829 INFO L226 Difference]: Without dead ends: 3044 [2019-11-07 04:10:14,838 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 04:10:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2019-11-07 04:10:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 2923. [2019-11-07 04:10:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2923 states. [2019-11-07 04:10:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4638 transitions. [2019-11-07 04:10:15,098 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4638 transitions. Word has length 118 [2019-11-07 04:10:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:15,099 INFO L462 AbstractCegarLoop]: Abstraction has 2923 states and 4638 transitions. [2019-11-07 04:10:15,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4638 transitions. [2019-11-07 04:10:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 04:10:15,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:15,104 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:15,104 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:15,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1262785784, now seen corresponding path program 1 times [2019-11-07 04:10:15,105 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:15,105 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937612592] [2019-11-07 04:10:15,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:15,316 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937612592] [2019-11-07 04:10:15,316 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:15,317 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:15,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566575286] [2019-11-07 04:10:15,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:15,318 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:15,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:15,319 INFO L87 Difference]: Start difference. First operand 2923 states and 4638 transitions. Second operand 4 states. [2019-11-07 04:10:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:17,144 INFO L93 Difference]: Finished difference Result 8762 states and 14318 transitions. [2019-11-07 04:10:17,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:17,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-11-07 04:10:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:17,196 INFO L225 Difference]: With dead ends: 8762 [2019-11-07 04:10:17,196 INFO L226 Difference]: Without dead ends: 5884 [2019-11-07 04:10:17,214 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 04:10:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2019-11-07 04:10:17,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 5718. [2019-11-07 04:10:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5718 states. [2019-11-07 04:10:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 9244 transitions. [2019-11-07 04:10:17,606 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 9244 transitions. Word has length 119 [2019-11-07 04:10:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:17,608 INFO L462 AbstractCegarLoop]: Abstraction has 5718 states and 9244 transitions. [2019-11-07 04:10:17,608 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 9244 transitions. [2019-11-07 04:10:17,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-07 04:10:17,611 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:17,611 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:17,612 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash -492943695, now seen corresponding path program 1 times [2019-11-07 04:10:17,612 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:17,612 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836528180] [2019-11-07 04:10:17,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:17,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836528180] [2019-11-07 04:10:17,819 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:17,819 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:17,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31924577] [2019-11-07 04:10:17,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:17,822 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:17,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:17,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:17,823 INFO L87 Difference]: Start difference. First operand 5718 states and 9244 transitions. Second operand 4 states. [2019-11-07 04:10:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:19,857 INFO L93 Difference]: Finished difference Result 17249 states and 29193 transitions. [2019-11-07 04:10:19,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:19,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-11-07 04:10:19,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:19,987 INFO L225 Difference]: With dead ends: 17249 [2019-11-07 04:10:19,987 INFO L226 Difference]: Without dead ends: 11580 [2019-11-07 04:10:20,029 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 04:10:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11580 states. [2019-11-07 04:10:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11580 to 11325. [2019-11-07 04:10:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11325 states. [2019-11-07 04:10:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 18866 transitions. [2019-11-07 04:10:20,943 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 18866 transitions. Word has length 120 [2019-11-07 04:10:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:20,944 INFO L462 AbstractCegarLoop]: Abstraction has 11325 states and 18866 transitions. [2019-11-07 04:10:20,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 18866 transitions. [2019-11-07 04:10:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 04:10:20,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:20,948 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:10:20,948 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:20,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1897328490, now seen corresponding path program 1 times [2019-11-07 04:10:20,949 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:20,949 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881395703] [2019-11-07 04:10:20,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:10:21,148 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881395703] [2019-11-07 04:10:21,149 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:21,149 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:10:21,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440095791] [2019-11-07 04:10:21,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:10:21,150 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:21,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:10:21,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:10:21,151 INFO L87 Difference]: Start difference. First operand 11325 states and 18866 transitions. Second operand 4 states. [2019-11-07 04:10:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:23,479 INFO L93 Difference]: Finished difference Result 34300 states and 61585 transitions. [2019-11-07 04:10:23,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:23,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-11-07 04:10:23,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:23,649 INFO L225 Difference]: With dead ends: 34300 [2019-11-07 04:10:23,649 INFO L226 Difference]: Without dead ends: 23020 [2019-11-07 04:10:23,717 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 04:10:23,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23020 states. [2019-11-07 04:10:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23020 to 22438. [2019-11-07 04:10:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22438 states. [2019-11-07 04:10:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22438 states to 22438 states and 39013 transitions. [2019-11-07 04:10:26,218 INFO L78 Accepts]: Start accepts. Automaton has 22438 states and 39013 transitions. Word has length 121 [2019-11-07 04:10:26,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:10:26,460 INFO L462 AbstractCegarLoop]: Abstraction has 22438 states and 39013 transitions. [2019-11-07 04:10:26,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:10:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 22438 states and 39013 transitions. [2019-11-07 04:10:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 04:10:26,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:10:26,470 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:26,470 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:10:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:10:26,471 INFO L82 PathProgramCache]: Analyzing trace with hash 778299142, now seen corresponding path program 1 times [2019-11-07 04:10:26,471 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:10:26,471 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867303009] [2019-11-07 04:10:26,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:10:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:10:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 04:10:26,651 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867303009] [2019-11-07 04:10:26,652 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:10:26,652 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:10:26,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312949094] [2019-11-07 04:10:26,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:10:26,653 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:10:26,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:10:26,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:26,654 INFO L87 Difference]: Start difference. First operand 22438 states and 39013 transitions. Second operand 5 states. [2019-11-07 04:10:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:10:27,423 INFO L93 Difference]: Finished difference Result 45255 states and 81717 transitions. [2019-11-07 04:10:27,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:10:27,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2019-11-07 04:10:27,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:10:27,568 INFO L225 Difference]: With dead ends: 45255 [2019-11-07 04:10:27,568 INFO L226 Difference]: Without dead ends: 22860 [2019-11-07 04:10:27,633 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:10:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22860 states.